/* ============================================
   GMT SERVICES — Design System
   Elite High-End Client Portal
   ============================================ */

/* --- CSS Variables --- */
:root {
  /* Color Palette */
  --color-gold: #C9A84C;
  --color-gold-light: #D4AF37;
  --color-gold-dark: #B8860B;
  --color-gold-muted: rgba(201, 168, 76, 0.3);
  --color-cream: #FFF8E7;
  --color-champagne: #F7E7CE;
  --color-ivory: #FFFFF0;

  /* Dark Neutrals */
  --color-bg-primary: #0A0A0B;
  --color-bg-secondary: #111113;
  --color-bg-tertiary: #1A1A1E;
  --color-bg-card: #151518;
  --color-bg-elevated: #1E1E24;

  --color-text-primary: #F5F0E8;
  --color-text-secondary: #A8A090;
  --color-text-muted: #6B6560;
  --color-text-inverse: #0A0A0B;

  /* Borders & Dividers */
  --color-border: rgba(201, 168, 76, 0.15);
  --color-border-light: rgba(201, 168, 76, 0.08);
  --color-border-hover: rgba(201, 168, 76, 0.3);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #C9A84C 0%, #D4AF37 50%, #B8860B 100%);
  --gradient-gold-subtle: linear-gradient(135deg, rgba(201, 168, 76, 0.15), rgba(212, 175, 55, 0.05));
  --gradient-dark: linear-gradient(180deg, #0A0A0B 0%, #111113 100%);
  --gradient-card: linear-gradient(145deg, rgba(30, 30, 36, 0.8), rgba(21, 21, 24, 0.9));

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 4px 20px rgba(201, 168, 76, 0.15);
  --shadow-gold-lg: 0 8px 40px rgba(201, 168, 76, 0.1);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-elegant: 'Cormorant Garamond', Georgia, serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-extra-slow: 1s ease;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 50%;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-base);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gold-muted);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gold);
}

/* --- Scroll Reveal Animations --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal][data-delay="100"].revealed {
  transition-delay: 0.1s;
}

[data-reveal][data-delay="200"].revealed {
  transition-delay: 0.2s;
}

[data-reveal][data-delay="300"].revealed {
  transition-delay: 0.3s;
}

/* --- Selection --- */
::selection {
  background: var(--color-gold-muted);
  color: var(--color-text-primary);
}

/* --- Utility Classes --- */
.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.section-divider {
  width: 60px;
  height: 2px;
  background: var(--gradient-gold);
  margin-bottom: var(--space-xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header .section-divider {
  margin-left: auto;
  margin-right: auto;
}

/* --- Button Primary (used in contact form) --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: var(--gradient-gold);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(201, 168, 76, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* --- Keyframes --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

/* --- Responsive Container --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}