/* ==========================================================================
   LIVACITE — Premium Sports Design Gallery
   Main Stylesheet: CSS Variables, Reset, Typography & Layout Foundations
   ========================================================================== */

:root,
[data-theme="dark"] {
  /* Color Palette — Dark Editorial & High Voltage Accents */
  --bg-dark: #08090C;
  --bg-surface: #10121A;
  --bg-surface-elevated: #161924;
  --bg-glass: rgba(10, 12, 18, 0.85);
  --bg-glass-card: rgba(18, 20, 30, 0.7);
  --bg-card: #10121A;
  --bg-modal: #10121A;
  --bg-header: rgba(8, 9, 12, 0.84);
  --bg-header-scrolled: rgba(6, 7, 10, 0.96);
  --bg-input: #121520;
  
  --accent-lime: #D4FF00;
  --accent-lime-glow: rgba(212, 255, 0, 0.28);
  --accent-lime-hover: #E5FF55;
  --accent-cyan: #00E5FF;
  --accent-cyan-glow: rgba(0, 229, 255, 0.2);
  --accent-gold: #FFC700;

  --border-light: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(212, 255, 0, 0.4);

  --text-main: #FFFFFF;
  --text-muted: #9DA3B4;
  --text-dim: #626778;
  --text-lime: #D4FF00;
  --text-inverse: #08090C;

  --shadow-card: 0 12px 35px rgba(0, 0, 0, 0.5);
  --shadow-dropdown: 0 16px 40px rgba(0, 0, 0, 0.6);
  --noise-opacity: 0.02;
  --body-bg-gradient: radial-gradient(circle at 15% 15%, rgba(212, 255, 0, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(0, 229, 255, 0.03) 0%, transparent 45%),
    linear-gradient(to bottom, rgba(8, 9, 12, 0.95), #08090C);

  /* Typography */
  --font-display: 'Anton', 'Syne', sans-serif;
  --font-sports: 'Bebas Neue', 'Anton', sans-serif;
  --font-subheading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-arabic: 'Cairo', 'Tajawal', 'Noto Sans Arabic', sans-serif;

  /* Layout Spacing */
  --container-max: 1320px;
  --header-height: 74px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] {
  /* Clean, Ultra-Premium Sports Editorial Light Palette */
  --bg-dark: #F4F5F9;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #ECEEF4;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --bg-glass-card: rgba(255, 255, 255, 0.92);
  --bg-card: #FFFFFF;
  --bg-modal: #FFFFFF;
  --bg-header: rgba(244, 245, 249, 0.88);
  --bg-header-scrolled: rgba(255, 255, 255, 0.96);
  --bg-input: #FFFFFF;

  --accent-lime: #C6EE00;
  --accent-lime-glow: rgba(198, 238, 0, 0.35);
  --accent-lime-hover: #b4db00;
  --accent-cyan: #009BB5;
  --accent-cyan-glow: rgba(0, 155, 181, 0.2);
  --accent-gold: #D69400;

  --border-light: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.14);
  --border-accent: rgba(140, 180, 0, 0.5);

  --text-main: #0B0D13;
  --text-muted: #555B6D;
  --text-dim: #848D9E;
  --text-lime: #4C6100;
  --text-inverse: #FFFFFF;

  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-dropdown: 0 14px 35px rgba(15, 23, 42, 0.12);
  --noise-opacity: 0.012;
  --body-bg-gradient: radial-gradient(circle at 15% 15%, rgba(198, 238, 0, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(0, 155, 181, 0.04) 0%, transparent 45%),
    linear-gradient(to bottom, #FFFFFF 0%, #F4F5F9 100%);
}

/* RTL Specific Overrides */
[dir="rtl"] {
  --font-display: 'Noto Sans Arabic', 'Syne', sans-serif;
  --font-body: 'Noto Sans Arabic', 'Inter', sans-serif;
}

/* CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-dark);
  color: var(--text-main);
  background-image: var(--body-bg-gradient);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

/* Noise overlay background texture */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.02'/%3E%3C/svg%3E");
  opacity: var(--noise-opacity);
  pointer-events: none;
  z-index: 9999;
}

/* Selection */
::selection {
  background-color: var(--accent-lime);
  color: #000000;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-surface-elevated);
  border-radius: 4px;
  border: 1px solid var(--border-light);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-lime);
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 1.75rem);
}

/* Unified Global Heading System */
h1, h2, h3, h4, h5, h6, .disp, .section-title, .detail-title {
  font-family: var(--font-display);
  font-style: italic;
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: 0.5px;
  line-height: 1.05;
}

h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
}

h2, .section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
}

h4 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
}

.disp strong,
h1 strong,
h2 strong,
h3 strong {
  font-weight: 400;
  color: var(--accent-lime);
  text-shadow: 0 0 25px var(--accent-lime-glow);
}

[data-theme="light"] .disp strong,
[data-theme="light"] h1 strong,
[data-theme="light"] h2 strong,
[data-theme="light"] h3 strong,
[data-theme="light"] .section-title strong {
  color: var(--text-lime);
  text-shadow: none;
}

/* Eyebrow Label with Skewed Volt Bar */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-lime);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2.5px;
  background: var(--accent-lime);
  transform: skewX(-20deg);
  box-shadow: 0 0 10px var(--accent-lime-glow);
}

/* Link Arrow with Volt Underline */
.zh-link-arrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-main);
  white-space: nowrap;
  border-bottom: 2px solid var(--accent-lime);
  padding-bottom: 3px;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.zh-link-arrow:hover {
  color: var(--accent-lime);
  transform: translateX(3px);
}

[data-theme="light"] .zh-link-arrow {
  border-bottom-color: var(--text-lime);
}

[data-theme="light"] .zh-link-arrow:hover {
  color: var(--text-lime);
}

/* Typography Helpers */
.font-display {
  font-family: var(--font-display);
}

.font-sports {
  font-family: var(--font-sports);
  letter-spacing: 0.05em;
}

.font-subheading {
  font-family: var(--font-subheading);
}

.text-lime {
  color: var(--accent-lime);
}

.text-gradient-lime {
  background: linear-gradient(135deg, var(--text-main) 30%, var(--accent-lime) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .text-gradient-lime {
  background: linear-gradient(135deg, var(--text-main) 40%, var(--text-lime) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-muted {
  color: var(--text-muted);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-subheading);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-lime);
  margin-bottom: 1rem;
}

.section-label::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--accent-lime);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-lime);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.1;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: 1.2rem;
}

.section-description {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 680px;
}