/* ==========================================================================
   SJ88 Design System — Component Library
   All components reference tokens from tokens.css
   ========================================================================== */

/* --------------------------------------------------------------------------
   BASE — gentle global resets
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
  margin: 0 0 var(--space-4);
}
h1, .h1 { font-size: var(--text-h1); }
h2, .h2 { font-size: var(--text-h2); }
h3, .h3 { font-size: var(--text-h3); }
h4, .h4 { font-size: var(--text-h4); }
h5, .h5 { font-size: var(--text-h5); }
h6, .h6 { font-size: var(--text-h6); }

p { margin: 0 0 var(--space-4); }
a { color: var(--text-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--brand-700); }

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  --btn-h: 44px;
  --btn-px: var(--space-5);
  --btn-fs: var(--text-body);
  --btn-bg: var(--brand-600);
  --btn-fg: #fff;
  --btn-bd: transparent;
  --btn-radius: var(--radius-lg);
  --btn-shadow: var(--shadow-sm);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--btn-h);
  padding: 0 var(--btn-px);
  font-family: var(--font-display);
  font-size: var(--btn-fs);
  font-weight: var(--weight-semibold);
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--btn-radius);
  box-shadow: var(--btn-shadow);
  cursor: pointer;
  user-select: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast),
              background var(--transition-fast),
              box-shadow var(--transition-fast),
              color var(--transition-fast);
  will-change: transform;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled, .btn.is-disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn .ph, .btn i { font-size: 1.1em; }

/* Sizes */
.btn-xs { --btn-h: 30px; --btn-px: var(--space-3); --btn-fs: var(--text-caption); --btn-radius: var(--radius-md); }
.btn-sm { --btn-h: 36px; --btn-px: var(--space-4); --btn-fs: var(--text-body-sm); }
.btn-lg { --btn-h: 52px; --btn-px: var(--space-7); --btn-fs: var(--text-body-lg); --btn-radius: var(--radius-xl); }
.btn-xl { --btn-h: 60px; --btn-px: var(--space-8); --btn-fs: 1.125rem; --btn-radius: var(--radius-xl); }

/* Gradient — primary CTA */
.btn-gradient {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  color: #fff;
  border: 0;
  box-shadow: var(--shadow-glow-brand);
  transition: transform var(--transition-fast),
              background-position var(--duration-slower) var(--ease-out),
              box-shadow var(--transition-fast);
}
.btn-gradient:hover {
  background-position: 100% 100%;
  box-shadow: 0 14px 50px -10px rgba(99,102,241,0.65);
  color: #fff;
}

/* Ghost — subtle border */
.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text-primary);
  --btn-bd: var(--border-default);
  --btn-shadow: none;
}
.btn-ghost:hover { --btn-bg: var(--bg-muted); --btn-bd: var(--border-strong); }

/* Glass — glassmorphism */
.btn-glass {
  --btn-bg: rgba(255, 255, 255, 0.55);
  --btn-fg: var(--text-primary);
  --btn-bd: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  --btn-shadow: var(--shadow-glass);
}
.btn-glass:hover { --btn-bg: rgba(255, 255, 255, 0.7); }

/* Pill — fully rounded */
.btn-pill { --btn-radius: var(--radius-full); }

/* Icon — square icon button */
.btn-icon {
  --btn-h: 40px;
  --btn-px: 0;
  width: var(--btn-h);
  min-width: var(--btn-h);
  padding: 0;
}
.btn-icon.btn-sm { --btn-h: 32px; }
.btn-icon.btn-lg { --btn-h: 52px; }

/* Soft semantic variants */
.btn-soft { --btn-bg: var(--brand-50); --btn-fg: var(--brand-700); }
.btn-soft:hover { --btn-bg: var(--brand-100); }
.btn-soft-success { --btn-bg: var(--color-success-50); --btn-fg: var(--color-success-700); }
.btn-soft-success:hover { --btn-bg: var(--color-success-100); }
.btn-soft-warning { --btn-bg: var(--color-warning-50); --btn-fg: var(--color-warning-700); }
.btn-soft-warning:hover { --btn-bg: var(--color-warning-100); }
.btn-soft-danger  { --btn-bg: var(--color-danger-50);  --btn-fg: var(--color-danger-700); }
.btn-soft-danger:hover  { --btn-bg: var(--color-danger-100); }

.btn-success { --btn-bg: var(--color-success-500); --btn-fg: #fff; }
.btn-success:hover { --btn-bg: var(--color-success-600); }
.btn-warning { --btn-bg: var(--color-warning-500); --btn-fg: #fff; }
.btn-warning:hover { --btn-bg: var(--color-warning-600); }
.btn-danger  { --btn-bg: var(--color-danger-500);  --btn-fg: #fff; }
.btn-danger:hover  { --btn-bg: var(--color-danger-600); }

/* --------------------------------------------------------------------------
   CARDS — glass, gradient, 3D, lift, glow
   -------------------------------------------------------------------------- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}
.card-header, .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}
.card-footer { border-bottom: 0; border-top: 1px solid var(--border-subtle); }
.card-body { padding: var(--space-6); }

.glass-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(var(--blur-md)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(180%);
  border: var(--border-glass);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-glass);
  padding: var(--space-6);
  color: var(--text-primary);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.glass-card:hover { box-shadow: var(--shadow-glass-lg); }
[data-theme="dark"] .glass-card { background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%); }

.gradient-border {
  position: relative;
  background: var(--bg-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  isolation: isolate;
}
.gradient-border::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.gradient-card {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  color: #fff;
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: background-position var(--duration-slower) var(--ease-out);
}
.gradient-card:hover { background-position: 100% 100%; }
.gradient-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 0%, rgba(255,255,255,0.25), transparent 50%);
  pointer-events: none;
}
.gradient-card > * { position: relative; z-index: 1; }
.gradient-card.gradient-sunset { background: var(--gradient-sunset); }
.gradient-card.gradient-ocean  { background: var(--gradient-ocean); }
.gradient-card.gradient-aurora { background: var(--gradient-aurora); }
.gradient-card.gradient-mint   { background: var(--gradient-mint); }
.gradient-card.gradient-dark   { background: var(--gradient-dark); }

.card-3d {
  perspective: 1000px;
  transform-style: preserve-3d;
  transition: transform var(--transition-base);
  will-change: transform;
}
.card-3d-inner {
  transform-style: preserve-3d;
  transition: transform var(--transition-slow) var(--ease-out);
  will-change: transform;
}

.card-lift {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  will-change: transform;
}
.card-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-200);
}

.card-glow {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.card-glow:hover { box-shadow: var(--shadow-glow-brand); border-color: var(--brand-300); }

/* --------------------------------------------------------------------------
   TEXT GRADIENTS
   -------------------------------------------------------------------------- */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
          color: transparent;
  display: inline-block;
}
.text-gradient-sunset { background: var(--gradient-sunset); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; display: inline-block; }
.text-gradient-ocean  { background: var(--gradient-ocean);  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; display: inline-block; }
.text-gradient-aurora { background: var(--gradient-aurora); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; display: inline-block; }

/* --------------------------------------------------------------------------
   BENTO GRID
   -------------------------------------------------------------------------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(160px, auto);
  gap: var(--space-4);
}
@media (max-width: 992px) { .bento-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .bento-grid { grid-template-columns: 1fr; } }

.bento-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  min-height: 200px;
}
.bento-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.bento-card-sm  { grid-column: span 1; grid-row: span 1; }
.bento-card-md  { grid-column: span 2; grid-row: span 1; }
.bento-card-lg  { grid-column: span 2; grid-row: span 2; }
.bento-card-wide { grid-column: span 2; }
.bento-card-tall { grid-row: span 2; }
@media (max-width: 992px) {
  .bento-card-md, .bento-card-lg, .bento-card-wide { grid-column: span 2; }
  .bento-card-tall { grid-row: span 1; }
}
@media (max-width: 576px) {
  .bento-card-md, .bento-card-lg, .bento-card-wide { grid-column: span 1; }
}

/* --------------------------------------------------------------------------
   AVATAR
   -------------------------------------------------------------------------- */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: #fff;
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: var(--text-body-sm);
  text-transform: uppercase;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.avatar-xs { width: 24px; height: 24px; font-size: 0.625rem; }
.avatar-sm { width: 32px; height: 32px; font-size: var(--text-caption); }
.avatar-md { width: 40px; height: 40px; }
.avatar-lg { width: 56px; height: 56px; font-size: var(--text-body); }
.avatar-xl { width: 80px; height: 80px; font-size: 1.5rem; }
.avatar-2xl { width: 112px; height: 112px; font-size: 2rem; }

.avatar-stack { display: inline-flex; }
.avatar-stack .avatar {
  border: 2px solid var(--bg-surface);
  margin-left: -10px;
  transition: transform var(--transition-fast);
}
.avatar-stack .avatar:first-child { margin-left: 0; }
.avatar-stack:hover .avatar { margin-left: -6px; }
.avatar-stack:hover .avatar:first-child { margin-left: 0; }

.avatar-status { position: relative; }
.avatar-status::after {
  content: "";
  position: absolute;
  bottom: 0; right: 0;
  width: 28%; height: 28%;
  min-width: 10px; min-height: 10px;
  border-radius: var(--radius-full);
  background: var(--neutral-400);
  border: 2px solid var(--bg-surface);
}
.avatar-status.online::after { background: var(--color-success-500); }
.avatar-status.away::after  { background: var(--color-warning-500); }
.avatar-status.busy::after  { background: var(--color-danger-500); }

/* --------------------------------------------------------------------------
   BADGES & TAGS
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2_5);
  font-family: var(--font-display);
  font-size: var(--text-overline);
  font-weight: var(--weight-semibold);
  line-height: 1.5;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--bg-muted);
  border-radius: var(--radius-md);
  white-space: nowrap;
}
.badge .ph, .badge i { font-size: 0.9em; }
.badge-dot { padding-left: var(--space-2); }
.badge-dot::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
}

.badge-soft { background: var(--brand-50); color: var(--brand-700); }
.badge-soft-success { background: var(--color-success-50); color: var(--color-success-700); }
.badge-soft-warning { background: var(--color-warning-50); color: var(--color-warning-700); }
.badge-soft-danger  { background: var(--color-danger-50);  color: var(--color-danger-700); }
.badge-soft-info    { background: var(--color-info-50);    color: var(--color-info-700); }

.badge-glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.5);
}
[data-theme="dark"] .badge-glass {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.badge-gradient {
  background: var(--gradient-primary);
  color: #fff;
  text-transform: none;
  letter-spacing: 0;
  font-weight: var(--weight-semibold);
  box-shadow: 0 4px 12px -4px rgba(99,102,241,0.4);
}
.badge-gradient-sunset { background: var(--gradient-sunset); box-shadow: 0 4px 12px -4px rgba(245,158,11,0.4); }
.badge-gradient-ocean  { background: var(--gradient-ocean);  box-shadow: 0 4px 12px -4px rgba(6,182,212,0.4); }

.badge-lg { padding: var(--space-1) var(--space-3); font-size: var(--text-caption); }
.badge-xl { padding: var(--space-1_5) var(--space-4); font-size: var(--text-body-sm); }

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1_5) var(--space-3);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  background: var(--bg-muted);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.tag-pill:hover { background: var(--brand-50); color: var(--brand-700); border-color: var(--brand-200); }
.tag-pill.is-active { background: var(--brand-600); color: #fff; }

.tag-gradient {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1_5) var(--space-3);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: #fff;
  background: var(--gradient-primary);
  background-size: 200% 200%;
  border-radius: var(--radius-full);
  transition: background-position var(--duration-slower) var(--ease-out);
}
.tag-gradient:hover { background-position: 100% 100%; color: #fff; }

/* --------------------------------------------------------------------------
   FORM CONTROLS
   -------------------------------------------------------------------------- */
.input-modern,
.input-glass,
.input-floating-label input,
.input-floating-label textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast),
              background var(--transition-fast);
  outline: none;
}
.input-modern::placeholder,
.input-glass::placeholder { color: var(--text-tertiary); }
.input-modern:hover,
.input-glass:hover { border-color: var(--border-strong); }
.input-modern:focus,
.input-glass:focus,
.input-floating-label input:focus,
.input-floating-label textarea:focus {
  border-color: var(--brand-500);
  box-shadow: var(--shadow-ring);
}
.input-modern:disabled { opacity: 0.6; cursor: not-allowed; }
.input-modern.is-error,
.input-glass.is-error { border-color: var(--color-danger-500); }
.input-modern.is-error:focus,
.input-glass.is-error:focus { box-shadow: var(--shadow-ring-danger); }

.input-glass {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border-color: rgba(255, 255, 255, 0.5);
}
[data-theme="dark"] .input-glass {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.input-search {
  position: relative;
}
.input-search .input-modern,
.input-search .input-glass { padding-left: calc(var(--space-4) + 24px); }
.input-search > .ph,
.input-search > i {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 1.1em;
  pointer-events: none;
}

textarea.input-modern,
textarea.input-glass { min-height: 100px; padding-top: var(--space-3); padding-bottom: var(--space-3); resize: vertical; }

.input-floating-label {
  position: relative;
}
.input-floating-label input,
.input-floating-label textarea {
  padding-top: var(--space-5);
  padding-bottom: var(--space-2);
}
.input-floating-label > label {
  position: absolute;
  top: 50%;
  left: var(--space-4);
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: var(--text-body);
  pointer-events: none;
  transition: all var(--transition-fast);
  background: transparent;
  padding: 0 var(--space-1);
}
.input-floating-label textarea + label { top: var(--space-5); transform: none; }
.input-floating-label input:focus + label,
.input-floating-label input:not(:placeholder-shown) + label,
.input-floating-label textarea:focus + label,
.input-floating-label textarea:not(:placeholder-shown) + label {
  top: 0;
  font-size: var(--text-caption);
  color: var(--brand-600);
  font-weight: var(--weight-semibold);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}
.form-hint { font-size: var(--text-caption); color: var(--text-tertiary); margin-top: var(--space-1); }
.form-error { font-size: var(--text-caption); color: var(--color-danger-600); margin-top: var(--space-1); }

/* Switch */
.switch {
  --w: 44px;
  --h: 24px;
  position: relative;
  display: inline-block;
  width: var(--w);
  height: var(--h);
  flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.switch__track {
  position: absolute;
  inset: 0;
  background: var(--neutral-300);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.switch__track::before {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: calc(var(--h) - 4px);
  height: calc(var(--h) - 4px);
  background: #fff;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-spring);
}
.switch input:checked + .switch__track { background: var(--gradient-indigo-violet); }
.switch input:checked + .switch__track::before { transform: translateX(calc(var(--w) - var(--h))); }
.switch input:focus-visible + .switch__track { box-shadow: var(--shadow-ring); }

/* Checkbox */
.checkbox-modern {
  --size: 22px;
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}
.checkbox-modern input { position: absolute; opacity: 0; pointer-events: none; }
.checkbox-modern__box {
  width: var(--size); height: var(--size);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1.5px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: transparent;
}
.checkbox-modern input:checked + .checkbox-modern__box {
  background: var(--gradient-indigo-violet);
  border-color: transparent;
  color: #fff;
}
.checkbox-modern input:focus-visible + .checkbox-modern__box { box-shadow: var(--shadow-ring); }

/* --------------------------------------------------------------------------
   SKELETON LOADER
   -------------------------------------------------------------------------- */
.skeleton {
  display: block;
  background: linear-gradient(90deg, var(--neutral-200) 0%, var(--neutral-100) 50%, var(--neutral-200) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
  border-radius: var(--radius-md);
}
.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-2);
  width: 100%;
}
.skeleton-text:last-child { width: 60%; margin-bottom: 0; }
.skeleton-heading { height: 24px; width: 50%; margin-bottom: var(--space-3); border-radius: var(--radius-sm); }
.skeleton-avatar { width: 48px; height: 48px; border-radius: var(--radius-full); }
.skeleton-card {
  height: 200px;
  width: 100%;
  border-radius: var(--radius-2xl);
}
.skeleton-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-xl);
}
[data-theme="dark"] .skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 100%);
  background-size: 200% 100%;
}

/* --------------------------------------------------------------------------
   SPINNER
   -------------------------------------------------------------------------- */
.spinner {
  display: inline-block;
  width: 24px; height: 24px;
  border: 2.5px solid var(--neutral-200);
  border-top-color: var(--brand-500);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}
.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 40px; height: 40px; border-width: 3px; }
.spinner-gradient {
  background: conic-gradient(from 0deg, transparent 0deg, var(--brand-500) 90deg, var(--brand-violet-500) 180deg, var(--brand-cyan-500) 270deg, transparent 360deg);
  -webkit-mask: radial-gradient(circle, transparent 38%, #000 40%);
          mask: radial-gradient(circle, transparent 38%, #000 40%);
  animation: spin 1s linear infinite;
  border: 0;
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
}
.spinner-pulse {
  width: 32px; height: 32px;
  background: var(--brand-500);
  border-radius: var(--radius-full);
  animation: pulse-glow 1.2s var(--ease-in-out) infinite;
  border: 0;
}

/* --------------------------------------------------------------------------
   TOAST
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
  max-width: 380px;
  width: calc(100vw - var(--space-12));
}
.toast-container > * { pointer-events: auto; }
@media (max-width: 576px) {
  .toast-container { top: var(--space-4); right: var(--space-4); left: var(--space-4); max-width: none; }
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  min-width: 280px;
  animation: slide-in-right var(--duration-base) var(--ease-spring);
  position: relative;
  overflow: hidden;
}
.toast::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--brand-500);
}
.toast.is-leaving { animation: slide-out-right var(--duration-base) var(--ease-out) forwards; }
.toast__icon { font-size: 1.5rem; line-height: 1; flex-shrink: 0; }
.toast__body { flex: 1; min-width: 0; }
.toast__title { font-weight: var(--weight-semibold); font-size: var(--text-body-sm); color: var(--text-primary); margin-bottom: 2px; }
.toast__msg { font-size: var(--text-body-sm); color: var(--text-secondary); word-wrap: break-word; }
.toast__close {
  background: none; border: 0; padding: 4px;
  color: var(--text-tertiary); cursor: pointer; font-size: 1.1rem; line-height: 1;
  border-radius: var(--radius-sm); transition: color var(--transition-fast);
}
.toast__close:hover { color: var(--text-primary); }

.toast-success::before { background: var(--color-success-500); }
.toast-success .toast__icon { color: var(--color-success-500); }
.toast-error::before   { background: var(--color-danger-500); }
.toast-error .toast__icon   { color: var(--color-danger-500); }
.toast-warning::before { background: var(--color-warning-500); }
.toast-warning .toast__icon { color: var(--color-warning-500); }
.toast-info::before    { background: var(--color-info-500); }
.toast-info .toast__icon    { color: var(--color-info-500); }

/* --------------------------------------------------------------------------
   MODAL
   -------------------------------------------------------------------------- */
.modal-modern {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: var(--bg-overlay);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  animation: fade-in var(--duration-fast) var(--ease-out);
}
.modal-modern__dialog {
  background: var(--bg-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-3xl);
  max-width: 560px;
  width: 100%;
  max-height: calc(100vh - 2 * var(--space-4));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: scale-in var(--duration-base) var(--ease-spring);
}
.modal-modern__dialog.modal-lg { max-width: 800px; }
.modal-modern__dialog.modal-xl { max-width: 1100px; }
.modal-modern__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}
.modal-modern__title { font-family: var(--font-display); font-size: var(--text-h4); font-weight: var(--weight-bold); margin: 0; }
.modal-modern__body { padding: var(--space-6); overflow-y: auto; flex: 1; }
.modal-modern__footer {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-muted);
}
.modal-modern__close {
  background: none; border: 0; cursor: pointer; font-size: 1.4rem; line-height: 1;
  color: var(--text-tertiary); padding: 4px; border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.modal-modern__close:hover { background: var(--bg-muted); color: var(--text-primary); }

/* --------------------------------------------------------------------------
   DROPDOWN
   -------------------------------------------------------------------------- */
.dropdown-glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(var(--blur-md)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(180%);
  border: var(--border-glass);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-glass-lg);
  padding: var(--space-2);
  min-width: 220px;
  z-index: var(--z-popover);
  animation: scale-in var(--duration-fast) var(--ease-spring);
  transform-origin: top right;
}
[data-theme="dark"] .dropdown-glass {
  background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2_5) var(--space-3);
  font-size: var(--text-body-sm);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast);
}
.dropdown-item:hover { background: var(--bg-muted); color: var(--text-primary); }
.dropdown-item .ph, .dropdown-item i { font-size: 1.1em; color: var(--text-tertiary); }
.dropdown-item.is-danger { color: var(--color-danger-600); }
.dropdown-item.is-danger .ph, .dropdown-item.is-danger i { color: var(--color-danger-500); }
.dropdown-divider { height: 1px; background: var(--border-subtle); margin: var(--space-1) 0; }

/* --------------------------------------------------------------------------
   TABS
   -------------------------------------------------------------------------- */
.tabs-modern {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  border-bottom: 1px solid var(--border-default);
  margin-bottom: var(--space-5);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs-modern::-webkit-scrollbar { display: none; }
.tab-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.tab-item:hover { color: var(--text-primary); }
.tab-item.is-active { color: var(--brand-600); border-bottom-color: var(--brand-600); }

.tab-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1_5) var(--space-3);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  background: var(--bg-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.tab-pill:hover { color: var(--text-primary); }
.tab-pill.is-active { background: var(--brand-600); color: #fff; }

/* --------------------------------------------------------------------------
   PROGRESS
   -------------------------------------------------------------------------- */
.progress {
  width: 100%;
  height: 8px;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}
.progress-bar {
  height: 100%;
  background: var(--brand-500);
  border-radius: inherit;
  transition: width var(--duration-slow) var(--ease-out);
}
.progress-bar-gradient {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  animation: gradient-shift 3s var(--ease-in-out) infinite;
}
.progress-bar-striped {
  background-image: var(--gradient-primary);
  background-size: 200% 100%, 30px 30px;
}

.progress-ring {
  --size: 60px;
  --thickness: 6px;
  width: var(--size); height: var(--size);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.progress-ring svg {
  width: 100%; height: 100%;
  transform: rotate(-90deg);
}
.progress-ring__track {
  fill: none;
  stroke: var(--neutral-200);
  stroke-width: var(--thickness);
}
.progress-ring__bar {
  fill: none;
  stroke: url(#progress-ring-gradient);
  stroke-width: var(--thickness);
  stroke-linecap: round;
  transition: stroke-dashoffset var(--duration-slower) var(--ease-out);
}
.progress-ring__value {
  position: absolute;
  font-size: calc(var(--size) * 0.22);
  font-weight: var(--weight-bold);
  font-family: var(--font-display);
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   HEATMAP CELL
   -------------------------------------------------------------------------- */
.heatmap-cell {
  width: 14px; height: 14px;
  border-radius: var(--radius-xs);
  background: var(--neutral-200);
  display: inline-block;
  transition: transform var(--transition-fast);
}
.heatmap-cell:hover { transform: scale(1.4); }
.heatmap-cell[data-level="0"] { background: var(--neutral-100); }
.heatmap-cell[data-level="1"] { background: var(--brand-200); }
.heatmap-cell[data-level="2"] { background: var(--brand-400); }
.heatmap-cell[data-level="3"] { background: var(--brand-600); }
.heatmap-cell[data-level="4"] { background: var(--gradient-primary); }
[data-theme="dark"] .heatmap-cell[data-level="0"] { background: rgba(255,255,255,0.06); }
[data-theme="dark"] .heatmap-cell[data-level="1"] { background: rgba(99,102,241,0.30); }
[data-theme="dark"] .heatmap-cell[data-level="2"] { background: rgba(99,102,241,0.55); }
[data-theme="dark"] .heatmap-cell[data-level="3"] { background: rgba(99,102,241,0.80); }

/* --------------------------------------------------------------------------
   EMPTY STATE
   -------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-12) var(--space-6);
  max-width: 480px;
  margin: 0 auto;
}
.empty-state__icon {
  width: 96px; height: 96px;
  border-radius: var(--radius-3xl);
  background: var(--gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--brand-500);
  margin-bottom: var(--space-5);
  position: relative;
}
.empty-state__icon::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  background: var(--gradient-primary);
  opacity: 0.1;
  z-index: -1;
  filter: blur(12px);
}
.empty-state__title {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  margin: 0 0 var(--space-2);
}
.empty-state__desc {
  font-size: var(--text-body);
  color: var(--text-secondary);
  margin: 0 0 var(--space-6);
  line-height: var(--leading-relaxed);
}
.empty-state__cta { display: flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }

/* --------------------------------------------------------------------------
   KBD — keyboard shortcut
   -------------------------------------------------------------------------- */
.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-bottom-width: 2px;
  border-radius: var(--radius-md);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
  vertical-align: middle;
}

/* --------------------------------------------------------------------------
   DIVIDER
   -------------------------------------------------------------------------- */
.divider-gradient {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--brand-300) 50%, transparent 100%);
  border: 0;
  margin: var(--space-6) 0;
}
.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-tertiary);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  margin: var(--space-5) 0;
}
.divider-text::before, .divider-text::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-default);
}

/* --------------------------------------------------------------------------
   TOOLTIP
   -------------------------------------------------------------------------- */
.tooltip-glass {
  position: relative;
}
.tooltip-glass::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--neutral-900);
  color: #fff;
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--transition-fast);
  z-index: var(--z-tooltip);
  box-shadow: var(--shadow-lg);
}
.tooltip-glass::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--neutral-900);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: var(--z-tooltip);
}
.tooltip-glass:hover::after,
.tooltip-glass:focus-visible::after { opacity: 1; transform: translateX(-50%) translateY(0); }
.tooltip-glass:hover::before,
.tooltip-glass:focus-visible::before { opacity: 1; }
.tooltip-glass[data-tooltip-pos="bottom"]::after { top: calc(100% + 8px); bottom: auto; transform: translateX(-50%) translateY(-4px); }
.tooltip-glass[data-tooltip-pos="bottom"]::before { top: calc(100% + 2px); bottom: auto; border-top: 0; border-bottom-color: var(--neutral-900); }
.tooltip-glass[data-tooltip-pos="bottom"]:hover::after { transform: translateX(-50%) translateY(0); }

/* --------------------------------------------------------------------------
   UTILITIES — quick helpers
   -------------------------------------------------------------------------- */
.text-muted { color: var(--text-secondary); }
.text-subtle { color: var(--text-tertiary); }
.text-brand { color: var(--brand-600); }
.text-success { color: var(--color-success-600); }
.text-warning { color: var(--color-warning-600); }
.text-danger  { color: var(--color-danger-600); }
.text-center { text-align: center; }
.text-end    { text-align: right; }

.bg-soft { background: var(--bg-muted); }
.bg-soft-brand { background: var(--brand-50); }
.bg-soft-success { background: var(--color-success-50); }
.bg-soft-warning { background: var(--color-warning-50); }
.bg-soft-danger  { background: var(--color-danger-50); }
.bg-gradient-soft { background: var(--gradient-soft); }
.bg-gradient-primary { background: var(--gradient-primary); color: #fff; }
.bg-gradient-ocean   { background: var(--gradient-ocean);   color: #fff; }
.bg-gradient-sunset  { background: var(--gradient-sunset);  color: #fff; }

.divide-y > * + * { border-top: 1px solid var(--border-default); }
.divide-x > * + * { border-left: 1px solid var(--border-default); }

.shadow-glow-brand { box-shadow: var(--shadow-glow-brand); }
.shadow-glow-violet { box-shadow: var(--shadow-glow-violet); }
.shadow-glow-cyan  { box-shadow: var(--shadow-glow-cyan); }
.shadow-glow-success { box-shadow: var(--shadow-glow-success); }
.shadow-glow-danger  { box-shadow: var(--shadow-glow-danger); }

.glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(var(--blur-md)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(180%);
  border: var(--border-glass);
}

.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { scrollbar-width: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Container helper */
.container-app {
  width: 100%;
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}
@media (min-width: 768px) {
  .container-app { padding-left: var(--space-6); padding-right: var(--space-6); }
}

/* Glassmorphism panel */
.glass-panel {
  background: var(--gradient-glass);
  backdrop-filter: blur(var(--blur-md)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(180%);
  border: var(--border-glass);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-glass);
  padding: var(--space-6);
}
[data-theme="dark"] .glass-panel {
  background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
}