/* ============================================
   DESIGN SYSTEM — E-Commerce Creative Studio
   ============================================ */

:root {
  /* --- Colors --- */
  --bg-base:     #09090F;
  --bg-surface:  #0F0F1A;
  --bg-card:     #141420;
  --bg-card-hover: #1A1A2A;
  --bg-elevated: #1E1E2E;

  --accent-violet:  #7C3AED;
  --accent-violet-light: #9D5FFF;
  --accent-pink:    #EC4899;
  --accent-orange:  #F97316;
  --accent-teal:    #14B8A6;
  --accent-blue:    #3B82F6;

  --gradient-primary: linear-gradient(135deg, #7C3AED 0%, #EC4899 50%, #F97316 100%);
  --gradient-soft:    linear-gradient(135deg, #7C3AED 0%, #EC4899 100%);
  --gradient-card:    linear-gradient(145deg, rgba(124,58,237,0.08), rgba(236,72,153,0.04));
  --gradient-glow:    radial-gradient(ellipse 60% 60% at 50% 0%, rgba(124,58,237,0.15), transparent);

  --text-primary:   #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted:     #475569;
  --text-disabled:  #2D3748;

  --border:         rgba(255,255,255,0.06);
  --border-subtle:  rgba(255,255,255,0.04);
  --border-accent:  rgba(124,58,237,0.25);
  --border-accent-bright: rgba(124,58,237,0.5);

  --success: #22C55E;
  --warning: #F59E0B;
  --error:   #EF4444;
  --info:    #3B82F6;

  /* --- Spacing --- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* --- Border Radius --- */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.5);
  --shadow-xl:  0 16px 64px rgba(0,0,0,0.6);
  --shadow-accent: 0 0 40px rgba(124,58,237,0.2);
  --shadow-glow:   0 0 20px rgba(124,58,237,0.4);
  --shadow-pink-glow: 0 0 20px rgba(236,72,153,0.3);

  /* --- Typography --- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  /* --- Transitions --- */
  --transition-fast:   all 0.15s ease;
  --transition-base:   all 0.25s ease;
  --transition-slow:   all 0.4s ease;
  --transition-spring: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --- Z-Index --- */
  --z-base:    1;
  --z-dropdown: 100;
  --z-sticky:  200;
  --z-overlay: 300;
  --z-modal:   400;
  --z-toast:   500;

  /* --- Layout --- */
  --sidebar-width: 260px;
  --header-height: 64px;
  --content-max:   1400px;
}

/* ============================================
   TYPOGRAPHY SCALE
   ============================================ */

.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); }

.font-normal   { font-weight: 400; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }
.font-black    { font-weight: 900; }

.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-gradient  {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-violet { color: var(--accent-violet-light); }
.text-pink   { color: var(--accent-pink); }

.leading-tight  { line-height: 1.2; }
.leading-normal { line-height: 1.5; }
.leading-relaxed{ line-height: 1.7; }

.tracking-wide  { letter-spacing: 0.05em; }
.tracking-wider { letter-spacing: 0.1em; }

.uppercase { text-transform: uppercase; }
.capitalize { text-transform: capitalize; }

/* ============================================
   GLASS MORPHISM UTILITIES
   ============================================ */

.glass {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
}

.glass-strong {
  background: rgba(20,20,32,0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
}

.glass-accent {
  background: rgba(124,58,237,0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-accent);
}

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

.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.flex-wrap   { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end   { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.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-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

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

.w-full  { width: 100%; }
.h-full  { height: 100%; }
.min-h-screen { min-height: 100vh; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed    { position: fixed; }
.sticky   { position: sticky; }

.overflow-hidden { overflow: hidden; }
.overflow-auto   { overflow: auto; }

.rounded-sm   { border-radius: var(--radius-sm); }
.rounded      { border-radius: var(--radius-md); }
.rounded-lg   { border-radius: var(--radius-lg); }
.rounded-xl   { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.hidden   { display: none !important; }
.invisible { visibility: hidden; }

/* Margin/Padding shortcuts */
.p-2  { padding: var(--space-2); }
.p-3  { padding: var(--space-3); }
.p-4  { padding: var(--space-4); }
.p-5  { padding: var(--space-5); }
.p-6  { padding: var(--space-6); }
.p-8  { padding: var(--space-8); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ============================================
   LIGHT THEME
   Applied via: <html data-theme="light">
   Accent colors & gradients stay identical.
   ============================================ */

[data-theme="light"] {
  --bg-base:       #F5F6FA;
  --bg-surface:    #FFFFFF;
  --bg-card:       #FFFFFF;
  --bg-card-hover: #F8F9FF;
  --bg-elevated:   #EEF0F8;

  --text-primary:   #111827;
  --text-secondary: #4B5563;
  --text-muted:     #9CA3AF;
  --text-disabled:  #D1D5DB;

  --border:         rgba(0,0,0,0.07);
  --border-subtle:  rgba(0,0,0,0.04);
  --border-accent:  rgba(124,58,237,0.18);
  --border-accent-bright: rgba(124,58,237,0.35);

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.09), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-xl:  0 16px 64px rgba(0,0,0,0.11), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-accent:    0 0 40px rgba(124,58,237,0.12);
  --shadow-glow:      0 0 20px rgba(124,58,237,0.25);
  --shadow-pink-glow: 0 0 20px rgba(236,72,153,0.18);
}

/* Light-specific overrides for components that use rgba(255,255,255,...) */
[data-theme="light"] .glass {
  background: rgba(255,255,255,0.75);
  border-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .glass-strong {
  background: rgba(255,255,255,0.9);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .card-glass {
  background: rgba(255,255,255,0.85);
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
[data-theme="light"] body {
  background: var(--bg-base);
  color: var(--text-primary);
}

/* Sidebar in light mode */
[data-theme="light"] .sidebar {
  background: #FFFFFF;
  border-right-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .sidebar-logo {
  border-bottom-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .nav-item:hover {
  background: rgba(124,58,237,0.06);
}
[data-theme="light"] .nav-item.active {
  background: rgba(124,58,237,0.09);
  color: var(--accent-violet);
}
[data-theme="light"] .nav-section-label {
  color: #9CA3AF;
}
[data-theme="light"] .sidebar-bottom {
  border-top-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .user-card {
  background: #F5F6FA;
  border-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .usage-card {
  background: #F5F6FA;
}

/* Header in light mode */
[data-theme="light"] .app-header {
  background: rgba(255,255,255,0.9);
  border-bottom-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .header-btn {
  background: rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.07);
  color: var(--text-secondary);
}
[data-theme="light"] .header-btn:hover {
  background: rgba(124,58,237,0.07);
  color: var(--accent-violet);
}
[data-theme="light"] .menu-toggle span {
  background: var(--text-secondary);
}

/* Cards in light mode */
[data-theme="light"] .card {
  background: var(--bg-card);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
[data-theme="light"] .card:hover {
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

/* Form inputs in light mode */
[data-theme="light"] .form-input,
[data-theme="light"] select.form-input {
  background: #F8F9FF;
  border-color: rgba(0,0,0,0.1);
  color: var(--text-primary);
}
[data-theme="light"] .form-input:focus {
  background: #FFFFFF;
  border-color: var(--accent-violet);
}
[data-theme="light"] .form-input::placeholder {
  color: #B0B7C5;
}

/* Upload zone in light mode */
[data-theme="light"] .upload-zone {
  background: rgba(124,58,237,0.03);
  border-color: rgba(124,58,237,0.2);
}
[data-theme="light"] .upload-zone:hover {
  background: rgba(124,58,237,0.06);
  border-color: var(--accent-violet);
}

/* Landing page in light mode */
[data-theme="light"] .landing-nav {
  background: rgba(255,255,255,0.85);
  border-bottom-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .landing-nav-links a {
  color: var(--text-secondary);
}
[data-theme="light"] .landing-nav-links a:hover {
  color: var(--text-primary);
}

/* Pricing cards in light mode */
[data-theme="light"] .pricing-card {
  background: #FFFFFF;
  border-color: rgba(0,0,0,0.08);
  box-shadow: var(--shadow-sm);
}
[data-theme="light"] .pricing-card.featured {
  border-color: var(--accent-violet);
  box-shadow: 0 0 0 1px var(--accent-violet), var(--shadow-md);
}

/* Badge in light mode */
[data-theme="light"] .badge {
  background: rgba(124,58,237,0.08);
}

/* Toast in light mode */
[data-theme="light"] .toast {
  background: #FFFFFF;
  border-color: rgba(0,0,0,0.08);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
}