/* =============================================================================
   SOLARA — Global Design System
   Design tokens, CSS custom properties, resets, typography, utilities
   ============================================================================= */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Inter:wght@300;400;500;600;700&family=DM+Sans:wght@300;400;500;600;700&family=Lora:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Merriweather:ital,wght@0,300;0,400;0,700;1,300;1,400&display=swap');

/* =============================================================================
   CSS CUSTOM PROPERTIES — LIGHT MODE
   ============================================================================= */
:root,
[data-theme="light"] {
  /* Backgrounds */
  --bg-primary:       #FAFAF8;
  --bg-surface:       #FFFFFF;
  --bg-surface-2:     #F5F4F0;
  --bg-surface-3:     #EEEDE8;

  /* Text */
  --text-primary:     #1A1A1A;
  --text-secondary:   #6B6B6B;
  --text-tertiary:    #9A9A9A;
  --text-inverse:     #FFFFFF;

  /* Accent */
  --accent-primary:   #2D2A6E;
  --accent-secondary: #6C63FF;
  --accent-gold:      #C4A052;
  --accent-gold-light:#D4B570;
  --accent-hover:     #231F5C;

  /* Functional */
  --success:          #2E7D32;
  --success-bg:       #E8F5E9;
  --warning:          #E65100;
  --warning-bg:       #FFF3E0;
  --error:            #C62828;
  --error-bg:         #FFEBEE;
  --info:             #1565C0;
  --info-bg:          #E3F2FD;

  /* Border */
  --border:           #E8E6E1;
  --border-strong:    #D0CEC8;
  --border-focus:     #6C63FF;

  /* Shadow */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.04);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.08), 0 10px 10px rgba(0,0,0,0.03);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,0.12);

  /* Logo */
  --logo-filter: none;

  /* Overlay */
  --overlay-bg: rgba(0,0,0,0.5);
  --overlay-subtle: rgba(0,0,0,0.03);

  /* Scrollbar */
  --scrollbar-track: #F5F4F0;
  --scrollbar-thumb: #D0CEC8;
  --scrollbar-thumb-hover: #B8B5AE;

  /* Input */
  --input-bg: #FFFFFF;
  --input-border: #E8E6E1;
  --input-border-focus: #6C63FF;
  --input-bg-disabled: #F5F4F0;

  /* Skeleton */
  --skeleton-base: #EEEDE8;
  --skeleton-shine: #F5F4F0;
}

/* =============================================================================
   CSS CUSTOM PROPERTIES — DARK MODE
   ============================================================================= */
[data-theme="dark"] {
  /* Backgrounds */
  --bg-primary:       #0A0A0F;
  --bg-surface:       #12121A;
  --bg-surface-2:     #1A1A25;
  --bg-surface-3:     #22222F;

  /* Text */
  --text-primary:     #E8E6F0;
  --text-secondary:   #9590AA;
  --text-tertiary:    #6B6578;
  --text-inverse:     #0A0A0F;

  /* Accent */
  --accent-primary:   #6C63FF;
  --accent-secondary: #A29BFE;
  --accent-gold:      #F6C344;
  --accent-gold-light:#F8D060;
  --accent-hover:     #8179FF;

  /* Functional */
  --success:          #66BB6A;
  --success-bg:       rgba(102,187,106,0.12);
  --warning:          #FFA726;
  --warning-bg:       rgba(255,167,38,0.12);
  --error:            #EF5350;
  --error-bg:         rgba(239,83,80,0.12);
  --info:             #42A5F5;
  --info-bg:          rgba(66,165,245,0.12);

  /* Border */
  --border:           rgba(108,92,231,0.15);
  --border-strong:    rgba(108,92,231,0.25);
  --border-focus:     #6C63FF;

  /* Shadow */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.4), 0 4px 6px rgba(0,0,0,0.3);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.5), 0 10px 10px rgba(0,0,0,0.3);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,0.6);

  /* Logo */
  --logo-filter: none;

  /* Overlay */
  --overlay-bg: rgba(0,0,0,0.75);
  --overlay-subtle: rgba(255,255,255,0.02);

  /* Scrollbar */
  --scrollbar-track: #12121A;
  --scrollbar-thumb: #2D2D40;
  --scrollbar-thumb-hover: #3D3D55;

  /* Input */
  --input-bg: #1A1A25;
  --input-border: rgba(108,92,231,0.2);
  --input-border-focus: #6C63FF;
  --input-bg-disabled: #12121A;

  /* Skeleton */
  --skeleton-base: #1A1A25;
  --skeleton-shine: #22222F;
}

/* =============================================================================
   GLOBAL DESIGN TOKENS (theme-independent)
   ============================================================================= */
:root {
  /* Typography scale */
  --font-serif:    'Playfair Display', 'Cormorant Garamond', Georgia, serif;
  --font-sans:     'Inter', 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-reading:  'Lora', 'Merriweather', Georgia, serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Font sizes */
  --text-xs:   0.75rem;    /* 12px */
  --text-sm:   0.875rem;   /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg:   1.125rem;   /* 18px */
  --text-xl:   1.25rem;    /* 20px */
  --text-2xl:  1.5rem;     /* 24px */
  --text-3xl:  1.875rem;   /* 30px */
  --text-4xl:  2.25rem;    /* 36px */
  --text-5xl:  3rem;       /* 48px */
  --text-6xl:  3.75rem;    /* 60px */
  --text-7xl:  4.5rem;     /* 72px */

  /* Font weights */
  --weight-light:   300;
  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semibold:600;
  --weight-bold:    700;

  /* Line heights */
  --leading-tight:   1.25;
  --leading-snug:    1.375;
  --leading-normal:  1.5;
  --leading-relaxed: 1.625;
  --leading-loose:   2;
  --leading-reading: 1.85;

  /* Spacing scale */
  --space-1:  0.25rem;   /* 4px */
  --space-2:  0.5rem;    /* 8px */
  --space-3:  0.75rem;   /* 12px */
  --space-4:  1rem;      /* 16px */
  --space-5:  1.25rem;   /* 20px */
  --space-6:  1.5rem;    /* 24px */
  --space-8:  2rem;      /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */
  --space-32: 8rem;      /* 128px */

  /* Border radius */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms ease-out;
  --transition-base:   200ms ease-out;
  --transition-slow:   300ms ease-out;
  --transition-slower: 400ms ease-out;

  /* Z-index scale */
  --z-base:    0;
  --z-raised:  10;
  --z-dropdown:20;
  --z-sticky:  30;
  --z-overlay: 40;
  --z-modal:   50;
  --z-toast:   60;
  --z-tooltip: 70;
}

/* =============================================================================
   RESET & BASE
   ============================================================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* Selection */
::selection {
  background: rgba(108, 99, 255, 0.25);
  color: var(--text-primary);
}

/* Links */
a {
  color: var(--accent-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--accent-primary);
}

/* Images */
img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Buttons reset */
button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
  color: inherit;
}

/* Input reset */
input, textarea, select {
  font-family: var(--font-sans);
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

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

/* =============================================================================
   TYPOGRAPHY UTILITIES
   ============================================================================= */
.font-serif   { font-family: var(--font-serif); }
.font-sans    { font-family: var(--font-sans); }
.font-reading { font-family: var(--font-reading); }

.text-xs   { font-size: var(--text-xs); }
.text-sm   { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg   { font-size: var(--text-lg); }
.text-xl   { font-size: var(--text-xl); }
.text-2xl  { font-size: var(--text-2xl); }
.text-3xl  { font-size: var(--text-3xl); }
.text-4xl  { font-size: var(--text-4xl); }
.text-5xl  { font-size: var(--text-5xl); }
.text-6xl  { font-size: var(--text-6xl); }

.font-light    { font-weight: var(--weight-light); }
.font-regular  { font-weight: var(--weight-regular); }
.font-medium   { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold     { font-weight: var(--weight-bold); }

.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-accent    { color: var(--accent-primary); }
.text-gold      { color: var(--accent-gold); }

.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.italic { font-style: italic; }

.leading-tight   { line-height: var(--leading-tight); }
.leading-normal  { line-height: var(--leading-normal); }
.leading-relaxed { line-height: var(--leading-relaxed); }
.leading-reading { line-height: var(--leading-reading); }

/* =============================================================================
   COMPONENT PRIMITIVES
   ============================================================================= */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  line-height: 1;
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  color: #FFFFFF;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.btn-secondary {
  background: var(--bg-surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-surface-3);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  color: var(--text-primary);
}
.btn-secondary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: var(--bg-surface-2);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--error);
  color: #FFFFFF;
}
.btn-danger:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  color: #FFFFFF;
}

.btn-gold {
  background: var(--accent-gold);
  color: #FFFFFF;
}
.btn-gold:hover {
  background: var(--accent-gold-light);
  transform: translateY(-1px);
  color: #FFFFFF;
}

.btn-lg {
  padding: 0.875rem var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.375rem var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
  aspect-ratio: 1;
  width: 36px;
  height: 36px;
}

.btn-icon-sm {
  padding: 0.375rem;
  width: 28px;
  height: 28px;
}

.btn-icon-lg {
  padding: 0.75rem;
  width: 44px;
  height: 44px;
}

/* Loading state */
.btn.loading {
  color: transparent;
  pointer-events: none;
}
.btn.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
  color: #fff;
}

@keyframes btn-spin {
  to { transform: rotate(360deg); }
}

/* --- Cards --- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.card-hover:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.card-sm {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}

.card-interactive {
  cursor: pointer;
}
.card-interactive:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--accent-secondary);
}
.card-interactive:active {
  transform: translateY(0);
}

/* --- Form Controls --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--error);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.625rem var(--space-4);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--input-border-focus);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.12);
  outline: none;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--text-tertiary);
}

.textarea {
  resize: vertical;
  min-height: 100px;
  line-height: var(--leading-relaxed);
}

.select {
  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='%236B6B6B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

/* Chip / Tags */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  background: var(--bg-surface-2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.chip:hover,
.chip.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

.chip-gold {
  background: rgba(196, 160, 82, 0.12);
  border-color: rgba(196, 160, 82, 0.3);
  color: var(--accent-gold);
}

/* --- Toggle --- */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--border-strong);
  border-radius: var(--radius-full);
  transition: background var(--transition-base);
  flex-shrink: 0;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: #FFFFFF;
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.toggle-input:checked + .toggle-slider {
  background: var(--accent-primary);
}

.toggle-input:checked + .toggle-slider::after {
  transform: translateX(20px);
}

.toggle-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  user-select: none;
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
}

.badge-premium {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
  color: #FFFFFF;
}

.badge-standard {
  background: var(--bg-surface-2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.badge-free {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid transparent;
}

.badge-new {
  background: var(--accent-primary);
  color: #FFFFFF;
}

.badge-pro {
  background: linear-gradient(135deg, #6C63FF 0%, #A29BFE 100%);
  color: #FFFFFF;
}

/* --- Modal --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.modal-backdrop.open {
  opacity: 1;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.modal-backdrop.open .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  max-width: 360px;
  pointer-events: auto;
  transform: translateX(120%);
  transition: transform var(--transition-slow);
}

.toast.show {
  transform: translateX(0);
}

.toast-success { border-left: 3px solid var(--success); }
.toast-error   { border-left: 3px solid var(--error); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-info    { border-left: 3px solid var(--info); }

.toast-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* --- Divider --- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: var(--space-4) 0;
}

.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}
.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* --- Loading/Skeleton --- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--skeleton-base) 0%,
    var(--skeleton-shine) 50%,
    var(--skeleton-base) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* --- Spinner --- */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Progress Bar --- */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* --- Tooltip --- */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  padding: 0.375rem var(--space-3);
  border-radius: var(--radius-md);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* =============================================================================
   LAYOUT UTILITIES
   ============================================================================= */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: 800px;
}

.container-wide {
  max-width: 1536px;
}

.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.flex-wrap   { flex-wrap: wrap; }
.items-start { align-items: flex-start; }
.items-center{ align-items: center; }
.items-end   { align-items: flex-end; }
.justify-start  { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end    { justify-content: flex-end; }
.justify-between{ justify-content: space-between; }
.flex-1      { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

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

.hidden { display: none !important; }

/* =============================================================================
   ANIMATIONS
   ============================================================================= */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.animate-fade-in    { animation: fadeIn var(--transition-slow) ease-out both; }
.animate-fade-in-up { animation: fadeInUp var(--transition-slow) ease-out both; }
.animate-scale-in   { animation: scaleIn var(--transition-base) ease-out both; }
.animate-pulse      { animation: pulse 2s ease-in-out infinite; }

/* Stagger children */
.stagger > *:nth-child(1) { animation-delay: 0ms; }
.stagger > *:nth-child(2) { animation-delay: 60ms; }
.stagger > *:nth-child(3) { animation-delay: 120ms; }
.stagger > *:nth-child(4) { animation-delay: 180ms; }
.stagger > *:nth-child(5) { animation-delay: 240ms; }
.stagger > *:nth-child(6) { animation-delay: 300ms; }

/* =============================================================================
   EARLY ACCESS BADGE
   ============================================================================= */
.early-access-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem var(--space-4);
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--accent-secondary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* =============================================================================
   TYPEWRITER CURSOR
   ============================================================================= */
.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent-primary);
  border-radius: 1px;
  vertical-align: text-bottom;
  animation: blink-cursor 0.8s ease-in-out infinite;
  margin-left: 1px;
}

/* =============================================================================
   RESPONSIVE
   ============================================================================= */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }

  .hidden-mobile { display: none !important; }
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1199px) {
  .hidden-tablet { display: none !important; }
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .hidden-desktop { display: none !important; }
}