/* ============================================
   SAMPADA AYURVEDIC CENTRE — Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Manrope:wght@400;500;600;700;800&family=Poppins:wght@400;500;600;700&display=swap');

/* --- CSS Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 16px; }
body { font-family: var(--font-primary); color: var(--text-primary); background: var(--bg-white); line-height: 1.7; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden; }
img, video, svg { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; border: none; outline: none; background: none; }
button { cursor: pointer; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.25; font-weight: 700; }

/* --- Design Tokens --- */
:root {
  /* Colors */
  --primary-900: #0D3B0F;
  --primary-800: #1B5E20;
  --primary-700: #2E7D32;
  --primary-600: #388E3C;
  --primary-500: #43A047;
  --primary-400: #66BB6A;
  --primary-300: #A5D6A7;
  --primary-200: #C8E6C9;
  --primary-100: #E8F5E9;
  --primary-50:  #F1F8E9;

  --gold-600: #B8860B;
  --gold-500: #C49A3C;
  --gold-400: #D4A853;
  --gold-300: #E2C07A;
  --gold-200: #F0D9A0;
  --gold-100: #FBF0D9;

  --bg-white: #FFFFFF;
  --bg-cream: #FDF8F0;
  --bg-light: #F5F0E8;
  --bg-green-light: #F0F7F0;
  --bg-dark: #0A1F0B;

  --text-primary: #1A1A1A;
  --text-secondary: #4A4A4A;
  --text-muted: #7A7A7A;
  --text-light: #FFFFFF;
  --text-on-green: #FFFFFF;

  --border-light: #E8E2D8;
  --border-medium: #D0C8BC;

  --success: #2E7D32;
  --error: #C62828;
  --warning: #F9A825;
  --info: #1565C0;

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Manrope', system-ui, sans-serif;
  --font-accent: 'Poppins', system-ui, 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-hero: 3.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.14);
  --shadow-green: 0 4px 20px rgba(46,125,50,0.15);
  --shadow-gold: 0 4px 20px rgba(196,154,60,0.15);

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

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
  --transition-fast: 0.15s var(--ease-out);
  --transition-base: 0.3s var(--ease-out);
  --transition-slow: 0.5s var(--ease-in-out);

  /* Glass */
  --glass-bg: rgba(255,255,255,0.12);
  --glass-bg-strong: rgba(255,255,255,0.2);
  --glass-border: rgba(255,255,255,0.2);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1200px;
  --container-2xl: 1400px;
  --header-height: 64px;
  --section-padding: clamp(3rem, 6vw, 7rem);
}

/* --- Container --- */
.container { width: 100%; max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-6); }
.container-sm { max-width: var(--container-sm); }
.container-lg { max-width: var(--container-2xl); }

/* --- Section --- */
.section { padding: var(--section-padding) 0; }
.section--cream { background: var(--bg-cream); }
.section--light { background: var(--bg-light); }
.section--green { background: var(--bg-green-light); }
.section--dark { background: var(--bg-dark); color: var(--text-light); }
.section--gradient { background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-900) 50%, #0A2E0C 100%); color: var(--text-light); }

/* --- Section Header --- */
.section-header { text-align: center; max-width: 720px; margin: 0 auto var(--space-16); }
.section-badge { display: inline-flex; align-items: center; gap: var(--space-2); font-family: var(--font-accent); font-size: var(--text-sm); font-weight: 600; color: var(--primary-700); background: var(--primary-100); padding: var(--space-2) var(--space-4); border-radius: var(--radius-full); margin-bottom: var(--space-4); letter-spacing: 0.5px; text-transform: uppercase; }
.section-title { font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl)); color: var(--text-primary); margin-bottom: var(--space-4); }
.section-title span { color: var(--primary-700); }
.section-subtitle { font-size: var(--text-lg); color: var(--text-secondary); line-height: 1.7; }

/* --- Grid --- */
.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* --- Flex 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; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-muted { color: var(--text-muted); }
.text-green { color: var(--primary-700); }
.text-gold { color: var(--gold-500); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* --- Spacing Utilities --- */
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mx-auto { margin-left: auto; margin-right: auto; }

/* --- Visibility --- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.desktop-only { display: block; }
.mobile-only { display: none; }
@media (max-width: 768px) {
  .desktop-only { display: none !important; }
  .mobile-only { display: block !important; }
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Scroll-triggered animation classes */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
.animate-on-scroll.is-visible { opacity: 1; transform: translateY(0); }
.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-cream); }
::-webkit-scrollbar-thumb { background: var(--primary-300); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--primary-500); }

/* --- Selection --- */
::selection { background: var(--primary-200); color: var(--primary-900); }