/* ======================================
   SMAN 5 TAPUNG - MAIN STYLESHEET
   Modern, Responsive School Website
   ====================================== */

/* ============ CSS VARIABLES ============ */
:root {
  /* Color Palette */
  --primary-color: #16a085;
  --primary-dark: #138871;
  --primary-light: #1abc9c;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --text-white: #ffffff;
  
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-dark: #2c3e50;
  --bg-overlay: rgba(22, 160, 133, 0.9);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #16a085 0%, #3498db 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(22, 160, 133, 0.95) 0%, rgba(52, 152, 219, 0.95) 100%);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============ RESET & BASE ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-secondary);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--bg-white);
}

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

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

ul, ol {
  list-style: none;
}

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-sm);
}

/* ============ UTILITY CLASSES ============ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.py-1 { padding-top: var(--spacing-xs); padding-bottom: var(--spacing-xs); }
.py-2 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-3 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-4 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-5 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-block;
  padding: 12px 30px;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

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

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

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

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

.btn-white:hover {
  background: var(--bg-light);
}

/* ============ CARDS ============ */
.card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.card-glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.card-text {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ============ HEADER ============ */
.top-bar {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: var(--spacing-xs) 0;
  font-size: 0.875rem;
}

.top-bar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.top-bar-item i {
  color: var(--primary-light);
}

/* ============ NAVIGATION ============ */
.navbar {
  background: var(--bg-white);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary-color);
}

.navbar-brand img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.navbar-menu {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.navbar-menu a {
  font-weight: 500;
  color: var(--text-dark);
  padding: 0.5rem 0;
  position: relative;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-normal);
}

.navbar-menu a:hover::after,
.navbar-menu a.active::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.navbar-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* ============ HERO SECTION ============ */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: var(--gradient-primary);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,96C1248,75,1344,53,1392,42.7L1440,32L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
  background-size: cover;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-text {
  color: var(--text-white);
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.95;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-image {
  animation: fadeInRight 1s ease;
}

.hero-image img {
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

/* ============ SECTIONS ============ */
.section {
  padding: var(--spacing-xxl) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: 2.5rem;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  margin-top: var(--spacing-md);
}

/* ============ GRID SYSTEM ============ */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============ STATS/HIGHLIGHTS ============ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-white);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  font-family: var(--font-primary);
}

.stat-label {
  color: var(--text-light);
  font-size: 1rem;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  margin-bottom: var(--spacing-md);
  color: var(--primary-light);
}

.footer-section p,
.footer-section li {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-fast);
}

.footer-section a:hover {
  color: var(--primary-light);
  padding-left: 5px;
}

.footer-logo {
  width: 80px;
  margin-bottom: var(--spacing-md);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.social-links a:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

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

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

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

.fade-in {
  animation: fadeIn 0.6s ease;
}

.fade-in-up {
  animation: fadeInUp 0.6s ease;
}

/* Scroll animations */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.scroll-animate.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 992px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    padding: var(--spacing-xxl) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-normal);
    align-items: flex-start;
  }
  
  .navbar-menu.active {
    right: 0;
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .hero {
    min-height: 500px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .stats-grid,
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}