/* https://github.com/alievkirill307-bot/Photon */
/* https://github.com/alievkirill307-bot/Photon/blob/master/LICENSE */
/* ==============================================
   PHOTON KIT — Unified CSS Framework
   Adaptive Dark/Light Theme · Glass UI
   Inspired by: Chota, Picnic, Siimple, Spectre, Wing,Bootstrap
   ============================================== */

/* ========== CSS CUSTOM PROPERTIES ========== */
:root {
  --pk-primary: #5755d9;
  --pk-primary-dark: #4543b8;
  --pk-primary-light: #7a78e0;
  --pk-secondary: #3b3b3b;
  --pk-success: #32b643;
  --pk-warning: #ffb700;
  --pk-error: #e85600;
  --pk-info: #4b9eff;

  --pk-bg: #ffffff;
  --pk-bg-alt: #f5f5f7;
  --pk-bg-glass: rgba(255, 255, 255, 0.6);
  --pk-bg-glass-heavy: rgba(255, 255, 255, 0.85);
  --pk-surface: #ffffff;
  --pk-text: #1d1d1f;
  --pk-text-secondary: #6e6e73;
  --pk-text-muted: #a1a1a6;
  --pk-border: rgba(0, 0, 0, 0.08);
  --pk-border-hover: rgba(0, 0, 0, 0.15);
  --pk-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --pk-shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.1);
  --pk-blur: blur(20px);
  --pk-radius: 12px;
  --pk-radius-sm: 8px;
  --pk-radius-xs: 6px;
  --pk-radius-pill: 9999px;

  --pk-font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --pk-font-mono: 'SF Mono', 'SFMono-Regular', 'Fira Code', 'Roboto Mono', Menlo, Courier, monospace;
  --pk-font-size: 16px;
  --pk-line-height: 1.6;
  --pk-transition: 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);

  --pk-grid-gutter: 1.5rem;
  --pk-grid-max-width: 1200px;
  --pk-nav-height: 3.5rem;
}

/* ========== DARK THEME (class-based) ========== */
.theme-dark {
  --pk-bg: #000000;
  --pk-bg-alt: #1c1c1e;
  --pk-bg-glass: rgba(0, 0, 0, 0.6);
  --pk-bg-glass-heavy: rgba(0, 0, 0, 0.85);
  --pk-surface: #1c1c1e;
  --pk-text: #f5f5f7;
  --pk-text-secondary: #98989d;
  --pk-text-muted: #6e6e73;
  --pk-border: rgba(255, 255, 255, 0.08);
  --pk-border-hover: rgba(255, 255, 255, 0.15);
  --pk-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --pk-shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
  --pk-primary-light: #6b6ae0;
}

/* ========== RESET & BASE ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { font-size: var(--pk-font-size); scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--pk-font);
  font-size: var(--pk-font-size);
  line-height: var(--pk-line-height);
  color: var(--pk-text);
  background: var(--pk-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--pk-primary); text-decoration: none; transition: var(--pk-transition); }
a:hover { color: var(--pk-primary-dark); }
hr {
  border: none;
  height: 1px;
  background: var(--pk-border);
  margin: 2rem 0;
}
::selection { background: var(--pk-primary); color: #fff; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--pk-border); border-radius: 12px; }
::-webkit-scrollbar-thumb:hover { background: var(--pk-text-muted); }
:focus-visible { outline: 2px solid var(--pk-primary); outline-offset: 2px; border-radius: 4px; }

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--pk-text);
  margin-bottom: 0.5em;
}
h1 { font-size: 2.5rem; letter-spacing: -0.03em; }
h2 { font-size: 2rem; letter-spacing: -0.02em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }
p { margin-bottom: 1rem; color: var(--pk-text-secondary); }
small { font-size: 0.875em; color: var(--pk-text-muted); }
strong, b { font-weight: 600; }
blockquote {
  border-left: 3px solid var(--pk-primary);
  padding: 0.75rem 1.25rem;
  margin: 1rem 0;
  background: var(--pk-bg-alt);
  border-radius: 0 var(--pk-radius-sm) var(--pk-radius-sm) 0;
  color: var(--pk-text-secondary);
  font-style: italic;
}
code {
  font-family: var(--pk-font-mono);
  font-size: 0.875em;
  background: var(--pk-bg-alt);
  padding: 0.15em 0.4em;
  border-radius: var(--pk-radius-xs);
  color: var(--pk-primary);
}
pre {
  background: var(--pk-bg-alt);
  padding: 1rem 1.25rem;
  border-radius: var(--pk-radius-sm);
  overflow-x: auto;
  font-family: var(--pk-font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 1rem;
  border: 1px solid var(--pk-border);
}
pre code { background: none; padding: 0; color: var(--pk-text); }
kbd {
  display: inline-block;
  padding: 0.2em 0.5em;
  font-size: 0.8em;
  font-family: var(--pk-font-mono);
  background: var(--pk-bg-alt);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-xs);
  box-shadow: 0 1px 0 var(--pk-border);
}
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.3rem; }

/* ========== GLASS UTILITIES ========== */
.glass {
  background: var(--pk-bg-glass);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
}
.glass-heavy {
  background: var(--pk-bg-glass-heavy);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
}
.glass-card {
  background: var(--pk-bg-glass);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius);
  box-shadow: var(--pk-shadow);
  padding: 1.5rem;
}

/* ========== GRID SYSTEM (Chota + Picnic + Wing) ========== */
.container {
  max-width: var(--pk-grid-max-width);
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}
.container-fluid { width: 100%; padding: 0 1rem; }
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(var(--pk-grid-gutter) / -2);
}
.row > .col, .row > [class*="col-"] {
  flex: 1 0 0%;
  padding: 0 calc(var(--pk-grid-gutter) / 2);
  margin-bottom: var(--pk-grid-gutter);
}
.col-1  { flex: 0 0 8.3333%; max-width: 8.3333%; }
.col-2  { flex: 0 0 16.6667%; max-width: 16.6667%; }
.col-3  { flex: 0 0 25%; max-width: 25%; }
.col-4  { flex: 0 0 33.3333%; max-width: 33.3333%; }
.col-5  { flex: 0 0 41.6667%; max-width: 41.6667%; }
.col-6  { flex: 0 0 50%; max-width: 50%; }
.col-7  { flex: 0 0 58.3333%; max-width: 58.3333%; }
.col-8  { flex: 0 0 66.6667%; max-width: 66.6667%; }
.col-9  { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.3333%; max-width: 83.3333%; }
.col-11 { flex: 0 0 91.6667%; max-width: 91.6667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }
@media (max-width: 768px) {
  .row > .col, .row > [class*="col-"] { flex: 0 0 100%; max-width: 100%; }
}
@media (min-width: 769px) {
  .col-md-1  { flex: 0 0 8.3333%; max-width: 8.3333%; }
  .col-md-2  { flex: 0 0 16.6667%; max-width: 16.6667%; }
  .col-md-3  { flex: 0 0 25%; max-width: 25%; }
  .col-md-4  { flex: 0 0 33.3333%; max-width: 33.3333%; }
  .col-md-5  { flex: 0 0 41.6667%; max-width: 41.6667%; }
  .col-md-6  { flex: 0 0 50%; max-width: 50%; }
  .col-md-7  { flex: 0 0 58.3333%; max-width: 58.3333%; }
  .col-md-8  { flex: 0 0 66.6667%; max-width: 66.6667%; }
  .col-md-9  { flex: 0 0 75%; max-width: 75%; }
  .col-md-10 { flex: 0 0 83.3333%; max-width: 83.3333%; }
  .col-md-11 { flex: 0 0 91.6667%; max-width: 91.6667%; }
  .col-md-12 { flex: 0 0 100%; max-width: 100%; }
}
@media (min-width: 1024px) {
  .col-lg-1  { flex: 0 0 8.3333%; max-width: 8.3333%; }
  .col-lg-2  { flex: 0 0 16.6667%; max-width: 16.6667%; }
  .col-lg-3  { flex: 0 0 25%; max-width: 25%; }
  .col-lg-4  { flex: 0 0 33.3333%; max-width: 33.3333%; }
  .col-lg-5  { flex: 0 0 41.6667%; max-width: 41.6667%; }
  .col-lg-6  { flex: 0 0 50%; max-width: 50%; }
  .col-lg-7  { flex: 0 0 58.3333%; max-width: 58.3333%; }
  .col-lg-8  { flex: 0 0 66.6667%; max-width: 66.6667%; }
  .col-lg-9  { flex: 0 0 75%; max-width: 75%; }
  .col-lg-10 { flex: 0 0 83.3333%; max-width: 83.3333%; }
  .col-lg-11 { flex: 0 0 91.6667%; max-width: 91.6667%; }
  .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  line-height: 1.4;
  color: var(--pk-text);
  background: var(--pk-bg-glass);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-pill);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  letter-spacing: 0.01em;
}
.btn:hover {
  background: var(--pk-bg-glass-heavy);
  border-color: var(--pk-border-hover);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 25px rgba(0,0,0,0.08);
  color: var(--pk-text);
}
.btn:active { transform: translateY(0) scale(0.98); box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.btn:disabled, .btn[disabled] { opacity: 0.45; pointer-events: none; filter: grayscale(0.3); }

.btn--primary { background: var(--pk-primary); color: #fff; border-color: var(--pk-primary); box-shadow: 0 4px 14px rgba(87,85,217,0.25); }
.btn--primary:hover { background: var(--pk-primary-dark); border-color: var(--pk-primary-dark); color: #fff; box-shadow: 0 6px 20px rgba(87,85,217,0.35); transform: translateY(-2px) scale(1.02); }
.btn--primary:active { box-shadow: 0 2px 8px rgba(87,85,217,0.2); }
.btn--secondary { background: var(--pk-secondary); color: #fff; border-color: var(--pk-secondary); }
.btn--success { background: var(--pk-success); color: #fff; border-color: var(--pk-success); box-shadow: 0 4px 14px rgba(50,182,67,0.25); }
.btn--success:hover { box-shadow: 0 6px 20px rgba(50,182,67,0.35); }
.btn--warning { background: var(--pk-warning); color: #000; border-color: var(--pk-warning); box-shadow: 0 4px 14px rgba(255,183,0,0.25); }
.btn--warning:hover { box-shadow: 0 6px 20px rgba(255,183,0,0.35); }
.btn--error { background: var(--pk-error); color: #fff; border-color: var(--pk-error); box-shadow: 0 4px 14px rgba(232,86,0,0.25); }
.btn--error:hover { box-shadow: 0 6px 20px rgba(232,86,0,0.35); }
.btn--info { background: var(--pk-info); color: #fff; border-color: var(--pk-info); box-shadow: 0 4px 14px rgba(75,158,255,0.25); }
.btn--info:hover { box-shadow: 0 6px 20px rgba(75,158,255,0.35); }

.btn--outline { background: transparent; border-color: var(--pk-border); color: var(--pk-text); backdrop-filter: none; }
.btn--outline:hover { background: var(--pk-bg-alt); border-color: var(--pk-border-hover); transform: translateY(-2px); box-shadow: var(--pk-shadow); }
.btn--outline-primary { background: transparent; border-color: var(--pk-primary); color: var(--pk-primary); backdrop-filter: none; }
.btn--outline-primary:hover { background: var(--pk-primary); color: #fff; box-shadow: 0 4px 14px rgba(87,85,217,0.25); }
.btn--outline-success { background: transparent; border-color: var(--pk-success); color: var(--pk-success); backdrop-filter: none; }
.btn--outline-success:hover { background: var(--pk-success); color: #fff; box-shadow: 0 4px 14px rgba(50,182,67,0.25); }
.btn--outline-error { background: transparent; border-color: var(--pk-error); color: var(--pk-error); backdrop-filter: none; }
.btn--outline-error:hover { background: var(--pk-error); color: #fff; box-shadow: 0 4px 14px rgba(232,86,0,0.25); }

.btn--ghost { background: transparent; border-color: transparent; backdrop-filter: none; }
.btn--ghost:hover { background: var(--pk-bg-alt); border-color: transparent; transform: translateY(-1px); }
.btn--link { background: transparent; border: none; color: var(--pk-primary); padding: 0; transform: none !important; }
.btn--link:hover { text-decoration: underline; transform: none; box-shadow: none; }

.btn--sm { padding: 0.4rem 0.9rem; font-size: 0.8rem; gap: 0.3rem; }
.btn--lg { padding: 0.85rem 2rem; font-size: 1.05rem; gap: 0.55rem; }
.btn--full { width: 100%; justify-content: center; }
.btn--icon { padding: 0.55rem; min-width: 2.6rem; min-height: 2.6rem; }
.btn--rounded { border-radius: var(--pk-radius); }

.btn--gradient { border: none; background: linear-gradient(135deg, var(--pk-primary), #7c6df0); color: #fff; box-shadow: 0 4px 14px rgba(87,85,217,0.3); }
.btn--gradient:hover { background: linear-gradient(135deg, var(--pk-primary-dark), #6b5ae0); box-shadow: 0 6px 20px rgba(87,85,217,0.4); transform: translateY(-2px) scale(1.02); }
.btn--gradient-success { border: none; background: linear-gradient(135deg, var(--pk-success), #2dd4a0); color: #fff; box-shadow: 0 4px 14px rgba(50,182,67,0.3); }
.btn--gradient-success:hover { box-shadow: 0 6px 20px rgba(50,182,67,0.4); }

.btn--loading { position: relative; pointer-events: none; }
.btn--loading::after {
  content: '';
  width: 1em; height: 1em;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: pk-spin 0.6s linear infinite;
  margin-left: 0.4rem;
}

.btn-group {
  display: inline-flex;
  gap: 0;
  box-shadow: var(--pk-shadow);
  border-radius: var(--pk-radius-pill);
}
.btn-group .btn { border-radius: 0; box-shadow: none; backdrop-filter: none; }
.btn-group .btn:first-child { border-radius: var(--pk-radius-pill) 0 0 var(--pk-radius-pill); }
.btn-group .btn:last-child { border-radius: 0 var(--pk-radius-pill) var(--pk-radius-pill) 0; }
.btn-group .btn + .btn { border-left: none; margin-left: -1px; }

/* ========== FORMS ========== */
.form-input, .form-select, .form-textarea {
  display: block;
  width: 100%;
  padding: 0.65rem 0.9rem;
  font-size: 0.9rem;
  font-family: inherit;
  line-height: 1.5;
  color: var(--pk-text);
  background: var(--pk-bg-alt);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-sm);
  transition: var(--pk-transition);
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--pk-primary);
  box-shadow: 0 0 0 3px rgba(87, 85, 217, 0.15);
  background: var(--pk-bg);
}
.form-input:hover, .form-select:hover, .form-textarea:hover {
  border-color: var(--pk-border-hover);
}
.form-input::placeholder { color: var(--pk-text-muted); }
.form-input:disabled, .form-select:disabled, .form-textarea:disabled {
  opacity: 0.5; cursor: not-allowed;
}
.form-input.error, .form-select.error, .form-textarea.error {
  border-color: var(--pk-error);
  box-shadow: 0 0 0 3px rgba(232, 86, 0, 0.15);
}
.form-input.success, .form-select.success, .form-textarea.success {
  border-color: var(--pk-success);
  box-shadow: 0 0 0 3px rgba(50, 182, 67, 0.15);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236e6e73' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.2rem;
}
.form-textarea { min-height: 100px; resize: vertical; }

.form-checkbox, .form-radio {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  margin-bottom: 0.5rem;
}
.form-checkbox input[type="checkbox"],
.form-radio input[type="radio"] {
  width: 1.1rem; height: 1.1rem;
  accent-color: var(--pk-primary);
  cursor: pointer;
}
.form-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}
.form-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.form-switch .switch-track {
  width: 2.4rem; height: 1.3rem;
  background: var(--pk-border);
  border-radius: 1rem;
  transition: var(--pk-transition);
  position: relative;
}
.form-switch .switch-track::after {
  content: '';
  width: 1rem; height: 1rem;
  background: var(--pk-surface);
  border-radius: 50%;
  position: absolute;
  top: 0.15rem; left: 0.15rem;
  transition: var(--pk-transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.form-switch input:checked + .switch-track { background: var(--pk-primary); }
.form-switch input:checked + .switch-track::after { left: 1.25rem; }

.form-range {
  width: 100%;
  height: 4px;
  appearance: none;
  background: var(--pk-border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.form-range::-webkit-slider-thumb {
  appearance: none;
  width: 1.2rem; height: 1.2rem;
  background: var(--pk-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.form-range:focus::-webkit-slider-thumb { box-shadow: 0 0 0 3px rgba(87,85,217,0.2); }

.form-group { margin-bottom: 1rem; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--pk-text);
}
.form-hint { font-size: 0.8rem; color: var(--pk-text-muted); margin-top: 0.25rem; }
.form-hint.error { color: var(--pk-error); }
.form-row {
  display: flex;
  gap: 0.75rem;
}
.form-row > * { flex: 1; }
@media (max-width: 600px) { .form-row { flex-direction: column; } }

/* Form class aliases */
.input, .form-input { display: block; width: 100%; padding: 0.65rem 0.9rem; font-size: 0.9rem; font-family: inherit; line-height: 1.5; color: var(--pk-text); background: var(--pk-bg-alt); border: 1px solid var(--pk-border); border-radius: var(--pk-radius-sm); transition: var(--pk-transition); appearance: none; }
.input:focus { outline: none; border-color: var(--pk-primary); box-shadow: 0 0 0 3px rgba(87,85,217,0.15); background: var(--pk-bg); }
.input:hover { border-color: var(--pk-border-hover); }
.input::placeholder { color: var(--pk-text-muted); }
.input:disabled { opacity: 0.5; cursor: not-allowed; }
.input--success { border-color: var(--pk-success) !important; box-shadow: 0 0 0 3px rgba(50,182,67,0.15) !important; }
.input--error { border-color: var(--pk-error) !important; box-shadow: 0 0 0 3px rgba(232,86,0,0.15) !important; }
.textarea { display: block; width: 100%; padding: 0.65rem 0.9rem; font-size: 0.9rem; font-family: inherit; line-height: 1.5; color: var(--pk-text); background: var(--pk-bg-alt); border: 1px solid var(--pk-border); border-radius: var(--pk-radius-sm); transition: var(--pk-transition); appearance: none; min-height: 100px; resize: vertical; }
.textarea:focus { outline: none; border-color: var(--pk-primary); box-shadow: 0 0 0 3px rgba(87,85,217,0.15); background: var(--pk-bg); }
.textarea:hover { border-color: var(--pk-border-hover); }
.textarea::placeholder { color: var(--pk-text-muted); }
.textarea:disabled { opacity: 0.5; cursor: not-allowed; }
.select { display: block; width: 100%; padding: 0.65rem 0.9rem; font-size: 0.9rem; font-family: inherit; line-height: 1.5; color: var(--pk-text); background: var(--pk-bg-alt); border: 1px solid var(--pk-border); border-radius: var(--pk-radius-sm); transition: var(--pk-transition); appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236e6e73' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; padding-right: 2.2rem; }
.select:focus { outline: none; border-color: var(--pk-primary); box-shadow: 0 0 0 3px rgba(87,85,217,0.15); background: var(--pk-bg); }
.select:hover { border-color: var(--pk-border-hover); }
.select:disabled { opacity: 0.5; cursor: not-allowed; }
.form-check { display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer; margin-bottom: 0.5rem; }
.checkbox, .radio { width: 1.1rem; height: 1.1rem; accent-color: var(--pk-primary); cursor: pointer; }
.switch { position: relative; width: 2.4rem; height: 1.3rem; appearance: none; background: var(--pk-border); border-radius: 1rem; cursor: pointer; transition: var(--pk-transition); flex-shrink: 0; }
.switch::after { content: ''; width: 1rem; height: 1rem; background: var(--pk-surface); border-radius: 50%; position: absolute; top: 0.15rem; left: 0.15rem; transition: var(--pk-transition); box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.switch:checked { background: var(--pk-primary); }
.switch:checked::after { left: 1.25rem; }
.range { width: 100%; height: 4px; appearance: none; background: var(--pk-border); border-radius: 2px; outline: none; cursor: pointer; }
.range::-webkit-slider-thumb { appearance: none; width: 1.2rem; height: 1.2rem; background: var(--pk-primary); border-radius: 50%; cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,0.2); }
.range:focus::-webkit-slider-thumb { box-shadow: 0 0 0 3px rgba(87,85,217,0.2); }
.form-hint--error { color: var(--pk-error); }

/* ========== CARDS ========== */
.card {
  background: var(--pk-surface);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius);
  box-shadow: var(--pk-shadow);
  overflow: hidden;
  transition: var(--pk-transition);
}
.card:hover { box-shadow: var(--pk-shadow-lg); }
.card--glass {
  background: var(--pk-bg-glass);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
}
.card--glass:hover { background: var(--pk-bg-glass-heavy); }
.card__header { padding: 1.25rem 1.25rem 0; font-weight: 600; }
.card__body { padding: 1.25rem; }
.card__body:first-child { padding: 1.25rem; }
.card__footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--pk-border);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.card__image { width: 100%; display: block; }
.card__title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.35rem; }
.card__subtitle { font-size: 0.85rem; color: var(--pk-text-muted); margin-bottom: 0.75rem; }
.card + .card { margin-top: 1rem; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* ========== NAVIGATION ========== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  height: var(--pk-nav-height);
  background: var(--pk-bg-glass);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border-bottom: 1px solid var(--pk-border);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 0.75rem;
}
.navbar__brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--pk-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
}
.navbar__brand:hover { text-decoration: none; }
.navbar__brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}
.navbar__brand-img {
  width: 24px; height: 24px;
  border-radius: 6px;
  object-fit: cover;
}
.navbar__menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.navbar__item { margin: 0; }
.navbar__link {
  display: block;
  padding: 0.4rem 0.75rem;
  color: var(--pk-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--pk-radius-xs);
  transition: var(--pk-transition);
  text-decoration: none;
  white-space: nowrap;
}
.navbar__link:hover, .navbar__link.active, .navbar__link[aria-current="page"] {
  color: var(--pk-text);
  background: var(--pk-bg-alt);
  text-decoration: none;
}
.navbar__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--pk-text);
  padding: 0.4rem;
  border-radius: var(--pk-radius-xs);
  transition: var(--pk-transition);
  flex-shrink: 0;
}
.navbar__toggle:hover { background: var(--pk-bg-alt); }
.navbar__toggle-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 20px; height: 20px;
  position: relative;
}
.navbar__toggle-icon span {
  display: block;
  width: 18px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: absolute;
  transition: var(--pk-transition);
}
.navbar__toggle-icon span:nth-child(1) { transform: translateY(-5px); }
.navbar__toggle-icon span:nth-child(2) { transform: translateY(0); }
.navbar__toggle-icon span:nth-child(3) { transform: translateY(5px); }
.navbar__toggle.open .navbar__toggle-icon span:nth-child(1) { transform: rotate(45deg) translateY(0); }
.navbar__toggle.open .navbar__toggle-icon span:nth-child(2) { opacity: 0; }
.navbar__toggle.open .navbar__toggle-icon span:nth-child(3) { transform: rotate(-45deg) translateY(0); }

/* Navbar actions (right side) */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* ========== NAVBAR VARIANTS ========== */

/* Solid (no glass) */
.navbar--solid {
  background: var(--pk-surface);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
/* Transparent overlay style */
.navbar--transparent {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
}
/* Primary color */
.navbar--primary {
  background: var(--pk-primary);
  border-bottom-color: transparent;
}
.navbar--primary .navbar__link { color: rgba(255,255,255,0.8); }
.navbar--primary .navbar__link:hover,
.navbar--primary .navbar__link.active {
  color: #fff;
  background: rgba(255,255,255,0.15);
}
.navbar--primary .navbar__toggle { color: #fff; }
.navbar--primary .navbar__brand { color: #fff; }
/* Dark solid */
.navbar--dark {
  background: #1d1d1f;
  border-bottom-color: transparent;
}
.theme-dark .navbar--dark {
  background: #0a0a0a;
}
.navbar--dark .navbar__link { color: rgba(255,255,255,0.65); }
.navbar--dark .navbar__link:hover,
.navbar--dark .navbar__link.active {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.navbar--dark .navbar__toggle { color: rgba(255,255,255,0.65); }
.navbar--dark .navbar__brand { color: #fff; }
/* Centered navigation */
.navbar--center { justify-content: center; gap: 2rem; }
.navbar--center .navbar__brand { margin-right: auto; }
.navbar--center .navbar__menu { flex: 1; justify-content: center; }
.navbar--center .navbar__actions { margin-left: auto; }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .navbar__toggle { display: flex; }
  .navbar__menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--pk-nav-height);
    left: 0; right: 0;
    background: var(--pk-bg-glass-heavy);
    backdrop-filter: var(--pk-blur);
    -webkit-backdrop-filter: var(--pk-blur);
    border-bottom: 1px solid var(--pk-border);
    padding: 0.5rem;
    gap: 0.125rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    pointer-events: none;
  }
  .navbar__menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  .navbar__link { padding: 0.65rem 0.75rem; font-size: 0.95rem; }
  .navbar__actions { gap: 0.35rem; }
  /* Variants mobile overrides */
  .navbar--solid .navbar__menu { background: var(--pk-surface); }
  .navbar--primary .navbar__menu { background: var(--pk-primary); }
  .navbar--dark .navbar__menu { background: #1d1d1f; }
  .theme-dark .navbar--dark .navbar__menu { background: #0a0a0a; }
  .navbar--center { gap: 0; }
}

/* ========== TABS ========== */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--pk-border);
  gap: 0;
  overflow-x: auto;
}
.tabs__item { margin: 0; list-style: none; }
.tabs__link {
  display: block;
  padding: 0.6rem 1.25rem;
  color: var(--pk-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: var(--pk-transition);
  white-space: nowrap;
  text-decoration: none;
}
.tabs__link:hover { color: var(--pk-text); border-bottom-color: var(--pk-border); }
.tabs__link.active, .tabs__link[aria-current="page"] {
  color: var(--pk-primary);
  border-bottom-color: var(--pk-primary);
}
.tabs--full .tabs__item { flex: 1; text-align: center; }

/* ========== BREADCRUMBS ========== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
}
.breadcrumbs__item { margin: 0; }
.breadcrumbs__link { color: var(--pk-text-muted); text-decoration: none; }
.breadcrumbs__link:hover { color: var(--pk-text); }
.breadcrumbs__separator { color: var(--pk-text-muted); }
.breadcrumbs__item.active .breadcrumbs__link { color: var(--pk-text); font-weight: 500; }

/* ========== STEPS ========== */
.steps {
  display: flex;
  justify-content: center;
  gap: 0;
  counter-reset: step;
}
.step {
  flex: 1;
  text-align: center;
  position: relative;
  counter-increment: step;
}
.step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem; height: 2rem;
  margin: 0 auto 0.4rem;
  background: var(--pk-bg-alt);
  border: 2px solid var(--pk-border);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pk-text-muted);
}
.step::after {
  content: '';
  position: absolute;
  top: 1rem;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--pk-border);
  z-index: -1;
}
.step:last-child::after { display: none; }
.step.active::before { background: var(--pk-primary); border-color: var(--pk-primary); color: #fff; }
.step.completed::before { background: var(--pk-success); border-color: var(--pk-success); color: #fff; content: '✓'; }
.step__title { font-size: 0.8rem; color: var(--pk-text-muted); }
.step.active .step__title { color: var(--pk-text); font-weight: 500; }

/* ========== PAGINATION ========== */
.pagination {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}
.pagination__item { margin: 0; }
.pagination__link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem; height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-xs);
  font-size: 0.85rem;
  color: var(--pk-text-secondary);
  text-decoration: none;
  transition: var(--pk-transition);
}
.pagination__link:hover { border-color: var(--pk-primary); color: var(--pk-primary); }
.pagination__link.active {
  background: var(--pk-primary);
  border-color: var(--pk-primary);
  color: #fff;
}
.pagination__link.disabled { opacity: 0.4; pointer-events: none; }

/* ========== TABLES ========== */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.table th, .table td {
  padding: 0.6rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--pk-border);
}
.table th {
  font-weight: 600;
  color: var(--pk-text);
  background: var(--pk-bg-alt);
  white-space: nowrap;
}
.table td { color: var(--pk-text-secondary); }
.table tr:hover td { background: var(--pk-bg-alt); }
.table--striped tr:nth-child(even) td { background: var(--pk-bg-alt); }
.table--bordered th, .table--bordered td { border: 1px solid var(--pk-border); }
.table--fixed { table-layout: fixed; }

/* ========== ALERTS & TOASTS ========== */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--pk-radius-sm);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--pk-border);
  background: var(--pk-bg-alt);
  color: var(--pk-text-secondary);
}
.alert--primary { background: rgba(87, 85, 217, 0.1); border-color: var(--pk-primary); color: var(--pk-primary); }
.alert--success { background: rgba(50, 182, 67, 0.1); border-color: var(--pk-success); color: var(--pk-success); }
.alert--warning { background: rgba(255, 183, 0, 0.1); border-color: var(--pk-warning); color: #8a6d00; }
.alert--error { background: rgba(232, 86, 0, 0.1); border-color: var(--pk-error); color: var(--pk-error); }
.alert--info { background: rgba(75, 158, 255, 0.1); border-color: var(--pk-info); color: var(--pk-info); }
.alert__close {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0.5;
  color: inherit;
  padding: 0;
  line-height: 1;
}
.alert__close:hover { opacity: 1; }

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  border-radius: var(--pk-radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--pk-shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: pk-slide-up 0.3s ease;
  background: var(--pk-bg-glass-heavy);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
  color: var(--pk-text);
  min-width: 280px;
}
.toast--primary { background: rgba(87, 85, 217, 0.9); color: #fff; border-color: var(--pk-primary); }
.toast--success { background: rgba(50, 182, 67, 0.9); color: #fff; border-color: var(--pk-success); }
.toast--error { background: rgba(232, 86, 0, 0.9); color: #fff; border-color: var(--pk-error); }

/* ========== MODALS ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: var(--pk-transition);
  padding: 1rem;
}
.modal-overlay.open, .modal-overlay--open {
  opacity: 1;
  visibility: visible;
}
.modal {
  max-width: 500px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--pk-bg-glass-heavy);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius);
  box-shadow: var(--pk-shadow-lg);
  transform: scale(0.95);
  transition: var(--pk-transition);
}
.modal-overlay.open .modal,
.modal-overlay--open .modal {
  transform: scale(1);
}
.modal--sm { max-width: 360px; }
.modal--lg { max-width: 720px; }
.modal--full { max-width: 95vw; max-height: 95vh; width: 95vw; height: 95vh; }
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--pk-border);
}
.modal__header h3 { font-size: 1.1rem; margin: 0; }
.modal__close {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--pk-text-muted);
  padding: 0;
  line-height: 1;
}
.modal__close:hover { color: var(--pk-text); }
.modal__body { padding: 1.25rem; }
.modal__footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--pk-border);
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* ========== BADGES, TAGS, LABELS, CHIPS ========== */
.badge, .tag, .label, .chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15em 0.6em;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--pk-radius-pill);
  white-space: nowrap;
  background: var(--pk-bg-alt);
  color: var(--pk-text-secondary);
  border: 1px solid var(--pk-border);
}
.badge--primary, .tag--primary, .label--primary { background: var(--pk-primary); color: #fff; border-color: var(--pk-primary); }
.badge--success, .tag--success, .label--success { background: var(--pk-success); color: #fff; border-color: var(--pk-success); }
.badge--warning, .tag--warning, .label--warning { background: var(--pk-warning); color: #000; border-color: var(--pk-warning); }
.badge--error, .tag--error, .label--error { background: var(--pk-error); color: #fff; border-color: var(--pk-error); }
.badge--info, .tag--info, .label--info { background: var(--pk-info); color: #fff; border-color: var(--pk-info); }
.badge--sm { font-size: 0.65rem; padding: 0.1em 0.4em; }
.badge--lg { font-size: 0.85rem; padding: 0.2em 0.8em; }
.badge--pill { border-radius: var(--pk-radius-pill); }

.chip {
  padding: 0.25em 0.75em;
  gap: 0.35rem;
}
.chip__close {
  cursor: pointer;
  opacity: 0.5;
  font-size: 1.1em;
  line-height: 1;
  margin-left: 0.15rem;
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}
.chip__close:hover { opacity: 1; }

/* ========== PROGRESS BARS ========== */
.progress {
  height: 6px;
  background: var(--pk-bg-alt);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}
.progress__bar {
  height: 100%;
  background: var(--pk-primary);
  border-radius: 3px;
  transition: width 0.4s ease;
}
.progress--sm { height: 3px; }
.progress--lg { height: 10px; border-radius: 5px; }
.progress--success .progress__bar { background: var(--pk-success); }
.progress--warning .progress__bar { background: var(--pk-warning); }
.progress--error .progress__bar { background: var(--pk-error); }

/* ========== BARS (Spectre) ========== */
.bar {
  display: flex;
  flex-wrap: nowrap;
  height: 0.8rem;
  background: var(--pk-bg-alt);
  border-radius: var(--pk-radius-xs);
  overflow: hidden;
}
.bar__item {
  height: 100%;
  background: var(--pk-primary);
  transition: width 0.3s ease;
}
.bar__item + .bar__item { border-left: 2px solid var(--pk-bg); }
.bar--sm { height: 0.4rem; }
.bar--lg { height: 1.2rem; }

/* ========== SPINNERS ========== */
.spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--pk-border);
  border-top-color: var(--pk-primary);
  border-radius: 50%;
  animation: pk-spin 0.6s linear infinite;
  display: inline-block;
}
.spinner--sm { width: 1rem; height: 1rem; border-width: 2px; }
.spinner--lg { width: 2.5rem; height: 2.5rem; border-width: 3px; }
.spinner--primary { border-top-color: var(--pk-primary); }
.spinner--success { border-top-color: var(--pk-success); }
.spinner--error { border-top-color: var(--pk-error); }
.spinner--warning { border-top-color: var(--pk-warning); }
.spinner--info { border-top-color: var(--pk-info); }
@keyframes pk-spin { to { transform: rotate(360deg); } }

/* ========== TOOLTIPS ========== */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  padding: 0.3em 0.7em;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  background: var(--pk-text);
  color: var(--pk-bg);
  border-radius: var(--pk-radius-xs);
  opacity: 0;
  pointer-events: none;
  transition: var(--pk-transition);
  z-index: 50;
}
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}
[data-tooltip].tooltip-bottom::after { top: calc(100% + 6px); bottom: auto; }
[data-tooltip].tooltip-left::after { left: auto; right: calc(100% + 6px); top: 50%; bottom: auto; transform: translateY(-50%) scale(0.9); }
[data-tooltip].tooltip-left:hover::after { transform: translateY(-50%) scale(1); }
[data-tooltip].tooltip-right::after { left: calc(100% + 6px); top: 50%; bottom: auto; transform: translateY(-50%) scale(0.9); }
[data-tooltip].tooltip-right:hover::after { transform: translateY(-50%) scale(1); }

/* ========== DROPDOWNS ========== */
.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown__toggle { cursor: pointer; }
.dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 50;
  min-width: 160px;
  padding: 0.4rem;
  background: var(--pk-bg-glass-heavy);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-sm);
  box-shadow: var(--pk-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: var(--pk-transition);
}
.dropdown:hover .dropdown__menu,
.dropdown.open .dropdown__menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown__item {
  display: block;
  padding: 0.4rem 0.75rem;
  color: var(--pk-text-secondary);
  font-size: 0.85rem;
  border-radius: var(--pk-radius-xs);
  text-decoration: none;
  transition: var(--pk-transition);
  white-space: nowrap;
}
.dropdown__item:hover { background: var(--pk-bg-alt); color: var(--pk-text); }
.dropdown__divider {
  height: 1px;
  background: var(--pk-border);
  margin: 0.3rem 0;
}
.dropdown--right .dropdown__menu { left: auto; right: 0; }

/* ========== MENUS (Spectre) ========== */
.menu {
  background: var(--pk-surface);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-sm);
  box-shadow: var(--pk-shadow);
  padding: 0.4rem;
  min-width: 200px;
}
.menu__item {
  display: block;
  padding: 0.4rem 0.75rem;
  color: var(--pk-text-secondary);
  font-size: 0.85rem;
  border-radius: var(--pk-radius-xs);
  text-decoration: none;
  transition: var(--pk-transition);
}
.menu__item:hover { background: var(--pk-bg-alt); color: var(--pk-text); }
.menu__item.active { background: rgba(87, 85, 217, 0.1); color: var(--pk-primary); }
.menu__divider { height: 1px; background: var(--pk-border); margin: 0.3rem 0; }
.menu__header {
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--pk-text-muted);
}

/* ========== AVATARS ========== */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem; height: 2rem;
  border-radius: 50%;
  background: var(--pk-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  overflow: hidden;
  flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar--sm { width: 1.5rem; height: 1.5rem; font-size: 0.6rem; }
.avatar--lg { width: 3rem; height: 3rem; font-size: 1.1rem; }
.avatar--xl { width: 4rem; height: 4rem; font-size: 1.5rem; }
.avatar-group { display: flex; }
.avatar-group .avatar { margin-left: -0.5rem; border: 2px solid var(--pk-bg); }
.avatar-group .avatar:first-child { margin-left: 0; }

/* ========== EMPTY STATE ========== */
.empty {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--pk-bg-alt);
  border-radius: var(--pk-radius);
  border: 1px dashed var(--pk-border);
}
.empty__icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.4; }
.empty__title { font-size: 1.15rem; font-weight: 600; margin-bottom: 0.5rem; }
.empty__text { color: var(--pk-text-muted); margin-bottom: 1.25rem; }

/* ========== HERO ========== */
.hero {
  padding: 4rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--pk-bg-alt), var(--pk-bg));
  border-radius: var(--pk-radius);
  margin-bottom: 2rem;
}
.hero__title { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.03em; margin-bottom: 0.5rem; }
.hero__subtitle { font-size: 1.15rem; color: var(--pk-text-secondary); max-width: 600px; margin: 0 auto 1.5rem; }

/* ========== PANELS ========== */
.panel {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius);
  background: var(--pk-surface);
  box-shadow: var(--pk-shadow);
}
.panel__header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--pk-border);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.panel__body { flex: 1; padding: 1rem; overflow-y: auto; }
.panel__footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--pk-border);
}

/* ========== TILES ========== */
.tile {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
  align-items: flex-start;
}
.tile + .tile { border-top: 1px solid var(--pk-border); }
.tile__icon { flex-shrink: 0; }
.tile__content { flex: 1; min-width: 0; }
.tile__title { font-weight: 600; margin-bottom: 0.2rem; }
.tile__text { font-size: 0.85rem; color: var(--pk-text-muted); }
.tile__action { flex-shrink: 0; }

/* ========== ACCORDIONS ========== */
.accordion { border: 1px solid var(--pk-border); border-radius: var(--pk-radius-sm); overflow: hidden; }
.accordion + .accordion { margin-top: 0.5rem; }
.accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-weight: 500;
  transition: var(--pk-transition);
  user-select: none;
}
.accordion__header:hover { background: var(--pk-bg-alt); }
.accordion__arrow { transition: var(--pk-transition); font-size: 0.8rem; }
.accordion.open .accordion__arrow { transform: rotate(180deg); }
.accordion__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.accordion.open .accordion__body,
.accordion__item.open .accordion__body { max-height: 500px; }
.accordion__content { padding: 0 1rem 0.75rem; color: var(--pk-text-secondary); font-size: 0.9rem; }
.accordion__item { border-bottom: 1px solid var(--pk-border); }
.accordion__item:last-child { border-bottom: none; }

/* ========== CAROUSELS ========== */
.carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--pk-radius);
  background: var(--pk-bg-alt);
}
.carousel__slides {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.carousel__slide {
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 3rem 2rem;
  text-align: center;
  min-height: 250px;
}
.carousel__slide h3 { font-size: 1.3rem; font-weight: 700; }
.carousel__slide p { color: var(--pk-text-muted); max-width: 400px; }
.carousel__controls {
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 0.75rem;
  pointer-events: none;
}
.carousel__btn {
  pointer-events: auto;
  width: 2.2rem; height: 2.2rem;
  border-radius: 50%;
  background: var(--pk-bg-glass);
  backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
  color: var(--pk-text);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--pk-transition);
}
.carousel__btn:hover { background: var(--pk-bg-glass-heavy); }
.carousel__btn--prev {
  position: absolute;
  top: 50%;
  left: 0.5rem;
  transform: translateY(-50%);
  z-index: 2;
}
.carousel__btn--next {
  position: absolute;
  top: 50%;
  right: 0.5rem;
  transform: translateY(-50%);
  z-index: 2;
}
.carousel__indicators {
  position: absolute;
  bottom: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.35rem;
}
.carousel__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(0,0,0,0.2);
  border: none;
  cursor: pointer;
  transition: var(--pk-transition);
  padding: 0;
}
.carousel__dot.active { background: var(--pk-primary); width: 24px; border-radius: 4px; }
.carousel--fade .carousel__slides { transition: opacity 0.5s ease; }
.carousel--fade .carousel__slide { opacity: 0; position: absolute; transition: opacity 0.5s ease; }

.carousel--fade .carousel__slide.active { opacity: 1; position: relative; }

/* ========== BOOTSTRAP CAROUSEL COMPATIBILITY ========== */
/* Стандартная разметка Bootstrap 5 (carousel-inner, carousel-item,
   carousel-control-prev/next, carousel-indicators, data-bs-ride)
   работает с photon-kit.js без bootstrap.bundle.js */

.carousel.carousel-inner-compat { display: block; }

.carousel-inner {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.carousel-inner::after {
  display: block;
  clear: both;
  content: "";
}

.carousel-item {
  position: relative;
  display: none;
  float: left;
  width: 100%;
  margin-right: -100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transition: transform 0.6s ease-in-out;
}

.carousel-item.active {
  display: block;
}

.carousel-item > img,
.carousel-item > svg {
  display: block;
  width: 100%;
  object-fit: cover;
}

.carousel-fade .carousel-item {
  opacity: 0;
  transition-property: opacity;
  transform: none;
}

.carousel-fade .carousel-item.active {
  opacity: 1;
}

/* Кнопки управления (стрелки) */
.carousel-control-prev,
.carousel-control-next {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 15%;
  padding: 0;
  color: #fff;
  text-align: center;
  background: none;
  border: 0;
  opacity: 0.5;
  transition: opacity 0.15s ease;
  cursor: pointer;
  text-decoration: none;
}

.carousel-control-prev { left: 0; }
.carousel-control-next { right: 0; }

.carousel-control-prev:hover,
.carousel-control-prev:focus,
.carousel-control-next:hover,
.carousel-control-next:focus {
  color: #fff;
  text-decoration: none;
  outline: 0;
  opacity: 0.9;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  background-repeat: no-repeat;
  background-position: 50%;
  background-size: 100% 100%;
}

.carousel-control-prev-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z'/%3e%3c/svg%3e");
}

.carousel-control-next-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

/* Индикаторы (точки) */
.carousel-indicators {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  display: flex;
  justify-content: center;
  padding: 0;
  margin: 0 15% 1rem;
  list-style: none;
}

.carousel-indicators [data-bs-target],
.carousel-indicators button {
  box-sizing: content-box;
  flex: 0 1 auto;
  width: 30px;
  height: 3px;
  padding: 0;
  margin-right: 3px;
  margin-left: 3px;
  text-indent: -999px;
  cursor: pointer;
  background-color: #fff;
  background-clip: padding-box;
  border: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  opacity: 0.5;
  transition: opacity 0.6s ease;
}

.carousel-indicators .active {
  opacity: 1;
}

/* Адаптивность (как в Bootstrap) */
@media (max-width: 767px) {
  .carousel-control-prev,
  .carousel-control-next {
    width: 10%;
  }

  .carousel-indicators {
    margin-right: 10%;
    margin-left: 10%;
  }
}
/* ========== TIMELINES ========== */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0.55rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--pk-border);
}
.timeline__item {
  position: relative;
  padding-bottom: 1.5rem;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -1.7rem;
  top: 0.3rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--pk-surface);
  border: 2px solid var(--pk-primary);
}
.timeline__item.active::before { background: var(--pk-primary); }
.timeline__title { font-weight: 600; margin-bottom: 0.2rem; }
.timeline__text { font-size: 0.85rem; color: var(--pk-text-muted); }

/* ========== TOGGLES ========== */
.toggle-group {
  display: flex;
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-pill);
  overflow: hidden;
}
.toggle-group label {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--pk-transition);
  color: var(--pk-text-secondary);
  border-right: 1px solid var(--pk-border);
  user-select: none;
}
.toggle-group label:last-child { border-right: none; }
.toggle-group label:hover { background: var(--pk-bg-alt); }
.toggle-group input { display: none; }
.toggle-group input:checked + label { background: var(--pk-primary); color: #fff; }

/* ========== POPOVERS ========== */
.popover {
  position: relative;
  display: inline-block;
}
.popover__content {
  position: absolute;
  z-index: 50;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  min-width: 240px;
  padding: 1rem;
  background: var(--pk-bg-glass-heavy);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-sm);
  box-shadow: var(--pk-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--pk-transition);
  margin-top: 0.5rem;
}
.popover:hover .popover__content { opacity: 1; visibility: visible; transform: translateX(-50%) scale(1); }

/* ========== FILTERS ========== */
.filter { position: relative; }
.filter__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}
.filter__tag {
  cursor: pointer;
  transition: var(--pk-transition);
}
.filter__tag.active { background: var(--pk-primary); color: #fff; border-color: var(--pk-primary); }
.filter__item { display: none; }
.filter__item.show { display: block; }

/* ========== OFF-CANVAS ========== */
.off-canvas {
  position: relative;
  overflow: hidden;
}
.off-canvas__sidebar {
  position: fixed;
  top: 0; left: 0;
  width: 280px;
  height: 100vh;
  z-index: 200;
  transform: translateX(-100%);
  transition: var(--pk-transition);
  background: var(--pk-bg-glass-heavy);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border-right: 1px solid var(--pk-border);
  padding: 1rem;
}
.off-canvas.open .off-canvas__sidebar { transform: translateX(0); }
.off-canvas__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: var(--pk-transition);
}
.off-canvas.open .off-canvas__overlay { opacity: 1; visibility: visible; }

/* ========== COMPARISON SLIDER ========== */
.comparison {
  position: relative;
  overflow: hidden;
  border-radius: var(--pk-radius);
  user-select: none;
}
.comparison__before, .comparison__after {
  display: block;
  pointer-events: none;
}
.comparison__after {
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  width: 50%;
  overflow: hidden;
}
.comparison__slider {
  position: absolute;
  top: 0; left: 50%;
  width: 2px;
  height: 100%;
  background: var(--pk-text);
  cursor: col-resize;
  transform: translateX(-50%);
}

/* ========== CALENDAR ========== */
.calendar {
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-sm);
  overflow: hidden;
}
.calendar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--pk-bg-alt);
  font-weight: 600;
}
.calendar__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
}
.calendar__day-name {
  padding: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--pk-text-muted);
  text-transform: uppercase;
}
.calendar__day {
  padding: 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: var(--pk-radius-xs);
  transition: var(--pk-transition);
}
.calendar__day:hover { background: var(--pk-bg-alt); }
.calendar__day.today { background: rgba(87,85,217,0.1); color: var(--pk-primary); font-weight: 600; }
.calendar__day.selected { background: var(--pk-primary); color: #fff; }
.calendar__day.disabled { opacity: 0.3; pointer-events: none; }

/* ========== PARALLAX ========== */
.parallax {
  position: relative;
  overflow: hidden;
  height: 400px;
  border-radius: var(--pk-radius);
}
.parallax__layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.parallax__layer:first-child { transform: translateZ(0); }
.parallax__layer:last-child {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  color: #fff;
  text-align: center;
  padding: 2rem;
}

/* ========== METERS ========== */
.meter {
  height: 6px;
  background: var(--pk-bg-alt);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.meter::after {
  content: '';
  height: 100%;
  background: repeating-linear-gradient(
    90deg,
    var(--pk-primary) 0px,
    var(--pk-primary) 8px,
    transparent 8px,
    transparent 16px
  );
  display: block;
  border-radius: 3px;
}

/* ========== 360 VIEWER ========== */
.viewer-360 {
  position: relative;
  overflow: hidden;
  border-radius: var(--pk-radius);
  cursor: grab;
  background: var(--pk-bg-alt);
}
.viewer-360 img { width: 100%; display: block; }
.viewer-360:active { cursor: grabbing; }

/* ========== AUTOCOMPLETE ========== */
.autocomplete { position: relative; }
.autocomplete__menu {
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  z-index: 50;
  background: var(--pk-surface);
  border: 1px solid var(--pk-border);
  border-radius: 0 0 var(--pk-radius-sm) var(--pk-radius-sm);
  box-shadow: var(--pk-shadow-lg);
  max-height: 200px;
  overflow-y: auto;
  display: none;
}
.autocomplete.open .autocomplete__menu { display: block; }
.autocomplete__item {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--pk-transition);
}
.autocomplete__item:hover, .autocomplete__item.active { background: var(--pk-bg-alt); }

/* ========== UTILITIES ========== */

/* Text */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }
.text-uppercase { text-transform: uppercase; }
.text-lowercase { text-transform: lowercase; }
.text-capitalize { text-transform: capitalize; }
.text-italic { font-style: italic; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-break { word-break: break-all; }
.text-muted { color: var(--pk-text-muted) !important; }
.text-primary { color: var(--pk-primary) !important; }
.text-success { color: var(--pk-success) !important; }
.text-warning { color: var(--pk-warning) !important; }
.text-error { color: var(--pk-error) !important; }
.text-info { color: var(--pk-info) !important; }
.text-white { color: #fff !important; }

/* Font weight */
.weight-light { font-weight: 300; }
.weight-normal { font-weight: 400; }
.weight-medium { font-weight: 500; }
.weight-bold { font-weight: 600; }
.weight-black { font-weight: 800; }

/* Font size */
.size-sm { font-size: 0.85rem; }
.size-lg { font-size: 1.15rem; }
.size-xl { font-size: 1.5rem; }
.size-2xl { font-size: 2rem; }
.size-3xl { font-size: 2.5rem; }

/* Display */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }
.hidden { display: none !important; }

/* Flex */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-1 { flex: 1; }
.flex-grow { flex-grow: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.gap-xs { gap: 0.25rem; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 0.75rem; }
.gap-lg { gap: 1rem; }
.gap-xl { gap: 1.5rem; }

/* Position */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* Sizing */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-half { width: 50%; }
.w-screen { width: 100vw; }
.h-full { height: 100%; }
.h-auto { height: auto; }
.h-screen { height: 100vh; }

/* Spacing */
.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.ml-0 { margin-left: 0; }
.mr-0 { margin-right: 0; }
.mx-0 { margin-left: 0; margin-right: 0; }
.my-0 { margin-top: 0; margin-bottom: 0; }
.m-1 { margin: 0.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.ml-1 { margin-left: 0.5rem; }
.mr-1 { margin-right: 0.5rem; }
.m-2 { margin: 1rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }
.ml-2 { margin-left: 1rem; }
.mr-2 { margin-right: 1rem; }
.m-3 { margin: 1.5rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-3 { margin-bottom: 1.5rem; }
.m-4 { margin: 2rem; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.pt-1 { padding-top: 0.5rem; }
.pb-1 { padding-bottom: 0.5rem; }
.pl-1 { padding-left: 0.5rem; }
.pr-1 { padding-right: 0.5rem; }
.pt-2 { padding-top: 1rem; }
.pb-2 { padding-bottom: 1rem; }
.px-1 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-2 { padding-left: 1rem; padding-right: 1rem; }
.py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }

/* Borders */
.border { border: 1px solid var(--pk-border); }
.border-0 { border: none; }
.border-top { border-top: 1px solid var(--pk-border); }
.border-bottom { border-bottom: 1px solid var(--pk-border); }
.rounded { border-radius: var(--pk-radius); }
.rounded-sm { border-radius: var(--pk-radius-sm); }
.rounded-pill { border-radius: var(--pk-radius-pill); }
.rounded-circle { border-radius: 50%; }
.rounded-0 { border-radius: 0; }

/* Shadows */
.shadow { box-shadow: var(--pk-shadow); }
.shadow-lg { box-shadow: var(--pk-shadow-lg); }
.shadow-none { box-shadow: none; }

/* Backgrounds */
.bg-primary { background: var(--pk-primary) !important; color: #fff !important; }
.bg-success { background: var(--pk-success) !important; color: #fff !important; }
.bg-warning { background: var(--pk-warning) !important; color: #000 !important; }
.bg-error { background: var(--pk-error) !important; color: #fff !important; }
.bg-info { background: var(--pk-info) !important; color: #fff !important; }
.bg-alt { background: var(--pk-bg-alt) !important; }
.bg-glass { background: var(--pk-bg-glass) !important; backdrop-filter: var(--pk-blur) !important; }
.bg-transparent { background: transparent !important; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Misc */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }
.select-none { user-select: none; }
.pointer-events-none { pointer-events: none; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.clearfix::after { content: ''; display: table; clear: both; }
.float-right { float: right; }
.float-left { float: left; }

/* ========== STOPWATCH ========== */
.stopwatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem;
}
.stopwatch__display {
  font-size: 3.5rem;
  font-weight: 700;
  font-family: var(--pk-font-mono);
  letter-spacing: 0.08em;
  color: var(--pk-text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stopwatch__display.running { color: var(--pk-primary); }
.stopwatch__controls { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.stopwatch__laps {
  width: 100%;
  max-width: 320px;
  margin-top: 0.5rem;
  max-height: 180px;
  overflow-y: auto;
}
.stopwatch__lap {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  font-family: var(--pk-font-mono);
  border-bottom: 1px solid var(--pk-border);
  color: var(--pk-text-secondary);
}
.stopwatch__lap:last-child { border-bottom: none; }

/* ========== CLOCK ========== */
.clock {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 2rem;
}
.clock__time {
  font-size: 4rem;
  font-weight: 700;
  font-family: var(--pk-font-mono);
  letter-spacing: 0.05em;
  color: var(--pk-text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.clock__date {
  font-size: 1rem;
  color: var(--pk-text-secondary);
  font-weight: 500;
}

/* ========== CALENDAR ========== */
.calendar {
  max-width: 350px;
  padding: 1rem;
  border-radius: var(--pk-radius);
  background: var(--pk-surface);
  border: 1px solid var(--pk-border);
}
.calendar__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.calendar__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--pk-text);
}
.calendar__nav {
  display: flex;
  gap: 0.25rem;
}
.calendar__nav button {
  background: none;
  border: 1px solid var(--pk-border);
  border-radius: 6px;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
  color: var(--pk-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s;
}
.calendar__nav button:hover {
  background: var(--pk-bg-alt);
  color: var(--pk-text);
}
.calendar__weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--pk-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}
.calendar__weekday { padding: 0.35rem 0; }
.calendar__days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  gap: 2px;
}
.calendar__day {
  padding: 0.45rem 0;
  font-size: 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  color: var(--pk-text-secondary);
  transition: background 0.2s, color 0.2s;
  border: none;
  background: none;
  font-family: inherit;
}
.calendar__day:hover { background: var(--pk-bg-alt); color: var(--pk-text); }
.calendar__day--today {
  background: var(--pk-primary);
  color: #fff;
  font-weight: 600;
}
.calendar__day--today:hover { background: var(--pk-primary-dark); color: #fff; }
.calendar__day--other {
  color: var(--pk-text-muted);
  opacity: 0.4;
}
.calendar__day--selected {
  background: var(--pk-primary-light);
  color: #fff;
}

/* ========== ANIMATIONS ========== */
@keyframes pk-slide-up {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
@keyframes pk-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pk-scale-in {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.animate-fade-in { animation: pk-fade-in 0.3s ease; }
.animate-slide-up { animation: pk-slide-up 0.3s ease; }
.animate-scale-in { animation: pk-scale-in 0.3s ease; }

/* ========== RESPONSIVE HELPERS ========== */
@media (max-width: 600px) {
  .hide-xs { display: none !important; }
}
@media (min-width: 601px) and (max-width: 900px) {
  .hide-sm { display: none !important; }
}
@media (min-width: 901px) {
  .hide-md { display: none !important; }
}

/* ========== EXTENDED UTILITIES (BassCSS + Tachyons style) ========== */

/* ---- Positioning ---- */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.z-1 { z-index: 1; }
.z-2 { z-index: 2; }
.z-3 { z-index: 3; }
.z-4 { z-index: 4; }
.z-5 { z-index: 5; }
.z-max { z-index: 9999; }

/* ---- Width / Height ---- */
.w-auto { width: auto; }
.w-25 { width: 25%; }
.w-50 { width: 50%; }
.w-75 { width: 75%; }
.w-100 { width: 100%; }
.w-third { width: 33.33333%; }
.w-two-thirds { width: 66.66667%; }
.h-auto { height: auto; }
.h-25 { height: 25%; }
.h-50 { height: 50%; }
.h-75 { height: 75%; }
.h-100 { height: 100%; }
.vh-25 { height: 25vh; }
.vh-50 { height: 50vh; }
.vh-75 { height: 75vh; }
.vh-100 { height: 100vh; }
.min-vh-100 { min-height: 100vh; }
.max-width-1 { max-width: 24rem; }
.max-width-2 { max-width: 32rem; }
.max-width-3 { max-width: 48rem; }
.max-width-4 { max-width: 64rem; }

/* ---- Flexbox extras ---- */
.flex-auto { flex: 1 1 auto; min-width: 0; min-height: 0; }
.flex-none { flex: none; }
.flex-1 { flex: 1; }
.flex-grow-0 { flex-grow: 0; }
.flex-grow-1 { flex-grow: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-shrink-1 { flex-shrink: 1; }
.order-0 { order: 0; }
.order-1 { order: 1; }
.order-2 { order: 2; }
.order-3 { order: 3; }
.order-last { order: 99999; }
.justify-self-start { justify-self: start; }
.justify-self-end { justify-self: end; }
.justify-self-center { justify-self: center; }
.align-self-start { align-self: start; }
.align-self-end { align-self: end; }
.align-self-center { align-self: center; }
.align-self-stretch { align-self: stretch; }
.content-start { align-content: start; }
.content-end { align-content: end; }
.content-center { align-content: center; }
.content-between { align-content: space-between; }
.content-around { align-content: space-around; }
.content-stretch { align-content: stretch; }

/* ---- Display extras ---- */
.dn { display: none; }
.di { display: inline; }
.db { display: block; }
.dib { display: inline-block; }
.dit { display: inline-table; }
.dtc { display: table-cell; }
.dtr { display: table-row; }
.table-fixed { table-layout: fixed; }

/* ---- Floats ---- */
.fl { float: left; }
.fr { float: right; }
.fn { float: none; }
.cf::after { content: ''; display: table; clear: both; }

/* ---- Opacity ---- */
.o-0 { opacity: 0; }
.o-25 { opacity: 0.25; }
.o-50 { opacity: 0.5; }
.o-75 { opacity: 0.75; }
.o-100 { opacity: 1; }

/* ---- Border extras ---- */
.border-dashed { border-style: dashed; }
.border-dotted { border-style: dotted; }
.border-none { border: none; }
.br-pill { border-radius: 9999px; }
.br-100 { border-radius: 100%; }
.br-0 { border-radius: 0; }
.br-top { border-radius: var(--pk-radius) var(--pk-radius) 0 0; }
.br-bottom { border-radius: 0 0 var(--pk-radius) var(--pk-radius); }
.br-left { border-radius: var(--pk-radius) 0 0 var(--pk-radius); }
.br-right { border-radius: 0 var(--pk-radius) var(--pk-radius) 0; }

/* ---- Shadows ---- */
.shadow-1 { box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.shadow-2 { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.shadow-3 { box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.shadow-4 { box-shadow: 0 16px 48px rgba(0,0,0,0.16); }
.shadow-5 { box-shadow: 0 24px 64px rgba(0,0,0,0.2); }

/* ---- Hover effects (Tachyons style) ---- */
.dim { opacity: 1; transition: opacity 0.15s ease; }
.dim:hover, .dim:focus { opacity: 0.5; }
.dim:active { opacity: 0.8; }

.glow { transition: box-shadow 0.25s ease; }
.glow:hover, .glow:focus { box-shadow: 0 0 8px var(--pk-primary); }

.grow { transform: scale(1); transition: transform 0.25s ease; }
.grow:hover, .grow:focus { transform: scale(1.05); }
.grow-large { transform: scale(1); transition: transform 0.25s ease; }
.grow-large:hover, .grow-large:focus { transform: scale(1.1); }

.shadow-hover { cursor: pointer; }
.shadow-hover::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.shadow-hover:hover::after { opacity: 1; }

.pointer { cursor: pointer; }
.bg-animate { transition: background-color 0.2s ease; }

/* ---- Aspect ratios (Tachyons) ---- */
.aspect-ratio {
  position: relative;
  height: 0;
  overflow: hidden;
}
.aspect-ratio--16x9 { padding-bottom: 56.25%; }
.aspect-ratio--9x16 { padding-bottom: 177.78%; }
.aspect-ratio--4x3 { padding-bottom: 75%; }
.aspect-ratio--3x4 { padding-bottom: 133.33%; }
.aspect-ratio--1x1 { padding-bottom: 100%; }
.aspect-ratio--object {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}

/* ---- Typography extras ---- */
.font-sans { font-family: var(--pk-font); }
.font-mono { font-family: var(--pk-font-mono); }
.measure { max-width: 30em; }
.measure-wide { max-width: 34em; }
.measure-narrow { max-width: 20em; }
.indent { text-indent: 1em; }
.small-caps { font-variant: small-caps; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.list-reset { list-style: none; padding-left: 0; }

/* ---- Drawer (slide-out panel, from mini.css) ---- */
.drawer-toggle { display: none; }
.drawer-close { display: none; }
.drawer {
  position: fixed;
  top: 0;
  right: -300px;
  width: 280px;
  height: 100%;
  background: var(--pk-surface);
  border-left: 1px solid var(--pk-border);
  box-shadow: var(--pk-shadow-lg);
  z-index: 200;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  padding: 1.5rem;
}
.drawer.open { right: 0; }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 199;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }

/* ========== FOOTERS ========== */
.footer {
  background: var(--pk-bg-alt);
  border-top: 1px solid var(--pk-border);
  padding: 2rem 1.5rem;
  font-size: 0.85rem;
  color: var(--pk-text-secondary);
}
.footer__inner {
  max-width: var(--pk-grid-max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* Footer --simple: centered text, minimal */
.footer--simple { text-align: center; padding: 1.5rem; }
.footer--simple .footer__inner {
  justify-content: center;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

/* Footer --columns: multi-column layout */
.footer--columns .footer__inner { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 2rem; }
.footer__col h4 { font-size: 0.8rem; font-weight: 600; color: var(--pk-text); margin-bottom: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.footer__col p, .footer__col a { font-size: 0.82rem; color: var(--pk-text-secondary); line-height: 1.8; display: block; }
.footer__col a:hover { color: var(--pk-primary); text-decoration: none; }

/* Footer --social: logo + description + social icons */
.footer--social .footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__brand { display: flex; align-items: center; gap: 0.6rem; font-size: 1.1rem; font-weight: 700; color: var(--pk-text); text-decoration: none; }
.footer__brand-logo { width: 1.6rem; height: 1.6rem; border-radius: 6px; overflow: hidden; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.footer__brand-logo img { width: 100%; height: 100%; object-fit: contain; display: block; }
.footer__desc { font-size: 0.82rem; color: var(--pk-text-muted); max-width: 300px; }
.footer__social { display: flex; gap: 0.5rem; }
.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  color: var(--pk-text-secondary);
  border: 1px solid var(--pk-border);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  text-decoration: none;
}
.footer__social a:hover { background: var(--pk-primary); color: #fff; border-color: var(--pk-primary); }
.footer__social svg { width: 16px; height: 16px; }

/* Footer --sticky: pinned to bottom */
.footer--sticky { position: sticky; bottom: 0; }

/* Footer --fixed: always at bottom of viewport */
.footer--fixed { position: fixed; bottom: 0; left: 0; right: 0; z-index: 50; }

/* Footer --glass: translucent glass effect */
.footer--glass {
  background: var(--pk-bg-glass);
  backdrop-filter: var(--pk-blur);
  -webkit-backdrop-filter: var(--pk-blur);
  border-top: 1px solid var(--pk-border);
}

/* Footer bottom bar */
.footer__bottom {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--pk-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--pk-text-muted);
}

/* Footer --columns bottom bar spans full width */
.footer--columns .footer__bottom { grid-column: 1 / -1; }

.footer--complete { padding: 3rem 0 0; }
.footer--complete .footer__inner { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 2rem; }
.footer--complete .footer__col--brand { max-width: 320px; }
.footer--complete .footer__bottom { margin-top: 2rem; }

/* Back-to-top button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--pk-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--pk-shadow);
  z-index: 100;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--pk-primary-dark); transform: translateY(-2px); }
.back-to-top:active { transform: translateY(0); }

/* ========== THEME SWITCHER ========== */
.theme-switch {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--pk-text-secondary);
  cursor: pointer;
  user-select: none;
}
.theme-switch__track {
  position: relative;
  width: 2.75rem;
  height: 1.5rem;
  border-radius: 9999px;
  background: var(--pk-border-hover);
  border: 1px solid var(--pk-border);
  transition: background 0.3s ease;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-switch__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 50%;
  background: var(--pk-surface);
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
  transition: transform 0.3s ease, background 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
}
.theme-dark .theme-switch__thumb {
  transform: translateX(1.25rem);
}
.theme-dark .theme-switch__track {
  background: var(--pk-primary);
  border-color: var(--pk-primary);
}
.theme-switch__label {
  font-weight: 500;
}

/* ========== FILE UPLOAD ========== */
.pk-upload-input { display: none; }
.pk-upload-dropzone:hover { border-color: var(--pk-primary) !important; background: rgba(87,85,217,0.03); }
.pk-upload-dropzone.drag-over { border-color: var(--pk-primary); background: rgba(87,85,217,0.05); }
.pk-upload-avatar:hover { border-color: var(--pk-primary); background: rgba(87,85,217,0.05); }
.pk-upload-list-item:hover { background: var(--pk-bg); }
.pk-upload-list-remove:hover { opacity: 1; }

/* ========== GALLERY / LIGHTBOX ========== */
.pk-gallery-item:hover {
  transform: scale(1.02);
  box-shadow: var(--pk-shadow-lg);
}
.pk-gallery-item::after {
  content: '🔍';
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity 0.2s;
}
.pk-gallery-item:hover::after {
  opacity: 0.7;
}
.pk-lightbox {
  display: flex;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 10000;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.pk-lightbox.open {
  opacity: 1;
  visibility: visible;
}
.pk-lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  z-index: 10;
  opacity: 0.7;
  transition: opacity 0.2s;
  line-height: 1;
  padding: 0.25rem;
}
.pk-lightbox__close:hover { opacity: 1; }
.pk-lightbox__content {
  position: relative;
  max-width: 80vw;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.pk-lightbox__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  min-height: 150px;
  font-size: 6rem;
  line-height: 1;
  user-select: none;
}
.pk-lightbox__caption {
  margin-top: 1rem;
  text-align: center;
  color: rgba(255,255,255,0.85);
}
.pk-lightbox__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.pk-lightbox__desc {
  font-size: 0.9rem;
  opacity: 0.7;
}
.pk-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  font-size: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 10;
  line-height: 1;
}
.pk-lightbox__nav:hover { background: rgba(255,255,255,0.2); }
.pk-lightbox__prev { left: 1rem; }
.pk-lightbox__next { right: 1rem; }

@media (max-width: 600px) {
  .pk-lightbox__visual { font-size: 4rem; }
  .pk-lightbox__content { max-width: 90vw; }
  .pk-lightbox__nav { width: 36px; height: 36px; font-size: 1.5rem; }
}