@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
  /* Colors - Everest Majestic Palette */
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #2563eb;
  --blue-600: #1d4ed8;
  --blue-700: #1e40af;
  --blue-800: #1e3a8a;
  --blue-900: #172554;

  --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;

  --emerald-500: #10b981;
  --emerald-600: #059669;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --amber-500: #f59e0b;

  /* Semantic Tokens */
  --color-primary: var(--blue-600);
  --color-primary-hover: var(--blue-700);
  --color-secondary: var(--blue-100);
  --color-accent: var(--emerald-600);
  --color-background: var(--slate-50);
  --color-text-primary: var(--slate-900);
  --color-text-secondary: var(--slate-600);
  --color-border: var(--slate-200);
  --color-error: var(--red-600);
  --color-success: var(--emerald-600);
  --color-warning: var(--amber-500);

  /* Spacing Tokens */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Typography Scales */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Borders & Shadows */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 10px 10px -5px rgba(15, 23, 42, 0.06);
}

/* Base resets & typography */
html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

body.menu-open {
  overflow: hidden;
}

/* Typography styles based on manual */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--slate-900);
}

h1 {
  font-size: clamp(2.25rem, 5vw + 1rem, 3.75rem); /* Fluid Heading */
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw + 0.75rem, 2.5rem);
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(1.25rem, 2vw + 0.5rem, 1.75rem);
}

p {
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 0.25vw + 0.95rem, 1.125rem); /* Typographic sweet spot */
  max-width: 75ch; /* Prevent lines from stretching too far */
}

/* Strict keyboard navigation accessibility focus states */
*:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.25);
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-primary);
  color: white;
  padding: 10px 20px;
  z-index: 100;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 20px;
}

/* Premium Visual Elements */
.glass-nav {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

.glass-card {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(226, 232, 240, 0.7);
  box-shadow: var(--shadow-md);
}

/* Hover Micro-interactions */
.hover-lift {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.gradient-blue {
  background: linear-gradient(135deg, var(--blue-700) 0%, var(--blue-900) 100%);
}

.gradient-text-blue {
  background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Button & Form states */
.btn-primary {
  background-color: var(--color-primary);
  color: white;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.2s ease-in-out;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-outline {
  border: 2px solid var(--slate-300);
  background-color: transparent;
  color: var(--slate-700);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.2s ease-in-out;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.03);
}

/* CSS Keyframe animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideRight {
  from { opacity: 0; transform: translateX(-24px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-fade-in {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-up {
  animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Touch zone styling */
button, a, input, select, textarea {
  min-height: 44px; /* Apple HIG guidelines */
  min-width: 44px;
}