/* ===== Shared CSS Variables & Utilities ===== */
:root {
  /* Ocean-inspired palette */
  --cyan-50: #ecfeff;
  --cyan-100: #cffafe;
  --cyan-200: #9de9f5;
  --cyan-300: #5ad5ea;
  --cyan-400: #1dc3DB;
  --cyan-500: #1AADC7;
  --cyan-600: #1389A2;
  --cyan-700: #0e7490;
  --cyan-800: #155e75;
  --cyan-900: #164e63;
  
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  
  --emerald-500: #10b981;
  --emerald-600: #059669;
  
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  
  --red-500: #ef4444;
  
  /* Grays / Slate */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  
  --white: #ffffff;
  
  /* Semantic Colors */
  --primary: var(--cyan-600);
  --primary-hover: var(--cyan-700);
  --secondary: var(--slate-600);
  --accent: var(--cyan-500);
  --success: var(--emerald-500);
  --warning: var(--amber-500);
  --danger: var(--red-500);
  
  --surface-0: #dfeaf4;
  --surface-1: #cbddea;
  --surface-2: #bcd3e6;
  --card-bg: #e7f0f7;
  --card: #ffffff;
  
  /* Gradients */
  --gradient-ocean: var(--cyan-500);
  --gradient-dark: linear-gradient(180deg, var(--slate-800) 0%, var(--slate-900) 100%);
  --gradient-success: linear-gradient(135deg, var(--emerald-500) 0%, var(--emerald-600) 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Radius */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Spacing */
  --container-max: 1200px;
  --section-padding: clamp(60px, 10vw, 120px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--slate-800);
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: 0.2s;
}

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

ul {
  list-style: none;
}

/* ===== Utilities ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-ocean);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3), 0 2px 8px rgba(26,173,199,0.2), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-primary:active {
  transform: scale(0.97) translateY(1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}