/* =============================================
   MAIN STYLES — Aatmaj Vidya Mandir School
   Reset, Variables, Typography, Utilities
   ============================================= */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --primary: #1a3a5c;
  --primary-light: #2a5a8c;
  --primary-dark: #0f2640;
  --secondary: #f0a500;
  --secondary-light: #ffbd2e;
  --secondary-dark: #c88600;
  --accent: #e8f4f8;
  --white: #ffffff;
  --off-white: #f8f9fa;
  --light-gray: #f0f2f5;
  --gray: #6c757d;
  --dark-gray: #343a40;
  --text: #333333;
  --text-light: #555555;
  --text-muted: #888888;
  --border: #dee2e6;
  --success: #28a745;
  --danger: #dc3545;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.15);

  /* Borders */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 16px;
  --radius-full: 50%;

  /* Transitions */
  --transition: all 0.3s ease;
  --transition-slow: all 0.5s ease;

  /* Fonts */
  --font-primary: 'Poppins', sans-serif;
  --font-body: 'Nunito', sans-serif;

  /* Layout */
  --max-width: 1200px;
  --navbar-height: 75px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

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

a:hover {
  color: var(--secondary);
}

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

ul, ol {
  list-style: none;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.section {
  padding: 5rem 0;
}

.section-light {
  background-color: var(--light-gray);
}

.section-accent {
  background-color: var(--accent);
}

.section-dark {
  background-color: var(--primary);
  color: var(--white);
}

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

.section-dark .section-title h2::after {
  background: var(--secondary);
}

/* --- Section Title --- */
.section-title {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 15px;
  margin-bottom: 1rem;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--secondary);
  border-radius: 2px;
}

.section-title p {
  max-width: 650px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  letter-spacing: 0.3px;
  line-height: 1.5;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

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

.btn-primary:hover {
  background: var(--secondary-dark);
  border-color: var(--secondary-dark);
  color: var(--white);
}

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

.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
}

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

.btn-white:hover {
  background: transparent;
  color: var(--white);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn-outline-white:hover {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* --- Grid Utilities --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

/* --- Flex Utilities --- */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-white { color: var(--white) !important; }
.text-primary { color: var(--primary) !important; }
.text-secondary { color: var(--secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-dark { color: #0f172a !important; }

/* --- Badges & Background Utilities --- */
.badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 50px;
  text-align: center;
  white-space: nowrap;
  line-height: 1.2;
  margin-top: 0.5rem;
}

.bg-primary { background-color: var(--primary) !important; color: var(--white) !important; }
.bg-secondary { background-color: var(--secondary) !important; color: var(--primary-dark) !important; }
.bg-success { background-color: #16a34a !important; color: var(--white) !important; }
.bg-danger { background-color: var(--danger) !important; color: var(--white) !important; }
.bg-warning { background-color: #f59e0b !important; color: #0f172a !important; } /* Warm amber background with dark bold text for crisp readability */
.bg-info { background-color: #0284c7 !important; color: var(--white) !important; }

.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.fw-normal { font-weight: 400; }

/* --- Spacing Utilities --- */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }
.py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Stagger delay for child elements */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }