/* ============================================
   SATYAM ASSOCIATES — Design System
   Colors derived from the official SA logo
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Primary — Deep Navy Blue (from SA letters & SATYAM text) */
  --primary: #162B4D;
  --primary-dark: #0E1D35;
  --primary-light: #1E3A66;
  --primary-lighter: #2A4F80;

  /* Secondary — Rich Gold (from arrow, fruits, accents) */
  --secondary: #C5962E;
  --secondary-dark: #A67C1F;
  --secondary-light: #D4AB4A;
  --secondary-lighter: #E8C96E;
  --secondary-bg: rgba(197, 150, 46, 0.08);

  /* Accent — Forest Green (from tree, leaves) */
  --accent: #2D7A3E;
  --accent-dark: #1F5C2C;
  --accent-light: #3D9950;
  --accent-lighter: #4DB862;
  --accent-bg: rgba(45, 122, 62, 0.08);

  /* Neutrals */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7F8FC;
  --bg-tertiary: #EEF1F8;
  --bg-dark: #0E1D35;
  --bg-dark-secondary: #162B4D;

  /* Text */
  --text-primary: #1A1D2B;
  --text-secondary: #5A6178;
  --text-tertiary: #8B91A8;
  --text-inverse: #FFFFFF;
  --text-inverse-secondary: rgba(255, 255, 255, 0.75);

  /* Borders */
  --border-light: #E4E8F1;
  --border-medium: #CBD1E0;
  --border-dark: rgba(255, 255, 255, 0.12);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(14, 29, 53, 0.06), 0 1px 2px rgba(14, 29, 53, 0.04);
  --shadow-md: 0 4px 14px rgba(14, 29, 53, 0.08), 0 2px 6px rgba(14, 29, 53, 0.04);
  --shadow-lg: 0 10px 30px rgba(14, 29, 53, 0.10), 0 4px 12px rgba(14, 29, 53, 0.05);
  --shadow-xl: 0 20px 50px rgba(14, 29, 53, 0.12), 0 8px 20px rgba(14, 29, 53, 0.06);
  --shadow-gold: 0 4px 20px rgba(197, 150, 46, 0.25);
  --shadow-card-hover: 0 16px 40px rgba(14, 29, 53, 0.12), 0 6px 16px rgba(14, 29, 53, 0.06);

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Font sizes */
  --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-6xl: 3.75rem;

  /* 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;

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

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 900px;
  --nav-height: 94px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--text-6xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
  color: var(--text-secondary);
  line-height: 1.8;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-24) 0;
  position: relative;
}

.section--dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--text-inverse);
}

.section--dark p {
  color: var(--text-inverse-secondary);
}

.section--alt {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-16);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--secondary);
  margin-bottom: var(--space-4);
}

.section-label::before,
.section-label::after {
  content: '';
  width: 24px;
  height: 1.5px;
  background: var(--secondary);
}

.section-title {
  margin-bottom: var(--space-5);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section--dark .section-subtitle {
  color: var(--text-inverse-secondary);
}

/* Gold accent text */
.text-gold {
  color: var(--secondary);
}

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

.text-navy {
  color: var(--primary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  color: var(--bg-primary);
  border-color: var(--secondary);
  box-shadow: var(--shadow-gold);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(197, 150, 46, 0.35);
}

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

.btn--secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn--secondary:hover {
  background: var(--primary);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.btn--outline-gold {
  background: transparent;
  color: var(--secondary);
  border-color: var(--secondary);
}

.btn--outline-gold:hover {
  background: var(--secondary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

.btn--dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--whatsapp {
  background: #25D366;
  color: white;
  border-color: #25D366;
}

.btn--whatsapp:hover {
  background: #1FAD54;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.35);
}

.btn--sm {
  padding: 10px 22px;
  font-size: var(--text-sm);
}

.btn--lg {
  padding: 18px 40px;
  font-size: var(--text-lg);
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

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

/* Scroll-reveal classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.5s; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.6s; }

.reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* --- Selection --- */
::selection {
  background: var(--secondary);
  color: white;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-lighter);
  border-radius: var(--radius-full);
}

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

/* --- Focus visible --- */
:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}