/* ==========================================================================
   BIHAR SATHI - DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

/* --- 1. CSS VARIABLES (DESIGN TOKENS) --- */
:root {
  /* Colors */
  --primary: #FF6B00; /* Vibrant Orange - Energy, visibility */
  --primary-dark: #E65A00;
  --secondary: #1A1A2E; /* Deep Navy - Trust, professionalism */
  --secondary-light: #2A2A40;
  --accent: #16C784; /* Success Green - Verified, safe */
  --danger: #FF4444; /* Alert Red - SOS, warning */
  --warning: #FFB800; /* Amber - Waiting states */
  --bg-color: #FAFAFA; /* Off-white - Clean background */
  --bg-card: #FFFFFF;
  --text-primary: #1A1A2E; /* High contrast text */
  --text-secondary: #64748B; /* Muted text */
  --border-color: #E2E8F0;

  /* Typography */
  --font-main: 'Noto Sans', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 5rem;
  
  /* Layout */
  --max-width: 1200px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 20px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition: all 0.3s ease;
}

/* --- 2. RESET & BASE --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--primary-dark);
}

ul {
  list-style: none;
}

/* --- 3. TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

/* --- 4. LAYOUT UTILITIES --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-light {
  background-color: #FFFFFF;
}

.section-dark {
  background-color: var(--secondary);
  color: #FFFFFF;
}

.section-dark h2, .section-dark h3, .section-dark p {
  color: #FFFFFF;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  font-size: 2.25rem;
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

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

.flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* --- 5. COMPONENTS --- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.5rem;
  min-height: 48px;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1.125rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 0, 0.3);
}

.btn-secondary {
  background-color: var(--secondary);
  color: #FFFFFF;
}

.btn-secondary:hover {
  background-color: var(--secondary-light);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--secondary);
  border: 2px solid var(--secondary);
}

.btn-outline:hover {
  background-color: var(--secondary);
  color: #FFFFFF;
}

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

.btn-whatsapp:hover {
  background-color: #128C7E;
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.btn-full {
  width: 100%;
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

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

.icon-box {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: rgba(255, 107, 0, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  gap: 0.25rem;
}

.badge-success { background-color: rgba(22, 199, 132, 0.1); color: var(--accent); }
.badge-primary { background-color: rgba(255, 107, 0, 0.1); color: var(--primary); }
.badge-danger { background-color: rgba(255, 68, 68, 0.1); color: var(--danger); }
.badge-warning { background-color: rgba(255, 184, 0, 0.1); color: #B38100; }

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #FFFFFF;
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
}

.logo img {
  height: 40px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--secondary);
  font-weight: 600;
}

.nav-link:hover {
  color: var(--primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--secondary);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding-top: 120px; /* Account for navbar */
  padding-bottom: var(--spacing-3xl);
  background: linear-gradient(to bottom, #FFF5ED, #FFFFFF);
  overflow: hidden;
}

.hero-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.hero-text {
  flex: 1;
}

.hero-text h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--secondary);
}

.hero-text h1 span {
  color: var(--primary);
}

.hero-text .subheading {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  color: var(--text-secondary);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.hero-image {
  flex: 1;
  position: relative;
}

.hero-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Trust Badge Row */
.trust-row-wrapper {
  background-color: #F8FAFC;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  overflow: hidden;
}

.trust-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--secondary);
  font-size: 0.875rem;
}

.trust-item i {
  color: var(--primary);
  font-size: 1.25rem;
}

/* FAQ Accordion */
.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  background-color: #FFFFFF;
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--secondary);
}

.faq-question i {
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--spacing-lg);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer {
  padding-bottom: var(--spacing-lg);
  max-height: 500px;
}

/* Footer */
.footer {
  background-color: var(--secondary);
  color: #FFFFFF;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-col h3 {
  color: #FFFFFF;
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary);
}

.footer-col p {
  color: #CBD5E1;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #CBD5E1;
  transition: var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: #CBD5E1;
}

.footer-contact i {
  color: var(--primary);
  margin-top: 0.25rem;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #94A3B8;
  font-size: 0.875rem;
}

.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

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

.social-icon:hover {
  background-color: var(--primary);
  color: #FFFFFF;
  transform: translateY(-3px);
}

/* Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: #FFFFFF;
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: #F8FAFC;
  font-weight: 700;
  color: var(--secondary);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* --- 6. RESPONSIVE MEDIA QUERIES --- */

/* Tablets (1024px and down) */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  
  .hero-text h1 { font-size: 2.5rem; }
  
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile Devices (768px and down) */
@media (max-width: 768px) {
  :root {
    --spacing-3xl: 3rem;
    --spacing-2xl: 2rem;
  }
  
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  
  .section-title h2 { font-size: 1.75rem; }
  
  /* Navbar Mobile */
  .mobile-menu-btn { display: block; }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: #FFFFFF;
    flex-direction: column;
    padding: 2rem;
    transition: left 0.3s ease;
    align-items: flex-start;
  }
  
  .nav-links.active { left: 0; }
  
  .nav-link {
    font-size: 1.25rem;
    width: 100%;
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
  }
  
  .nav-links .btn {
    width: 100%;
    margin-top: 1rem;
  }
  
  /* Hero Mobile */
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text h1 { font-size: 2rem; }
  
  .hero-buttons {
    justify-content: center;
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  /* Trust Row Mobile */
  .trust-row {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scrollbar-width: none; /* Firefox */
  }
  
  .trust-row::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
  }
  
  .trust-item {
    flex-shrink: 0;
  }
  
  /* Footer Mobile */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Small Mobile (480px and down) */
@media (max-width: 480px) {
  .hero-text h1 { font-size: 1.75rem; }
  .section-title h2 { font-size: 1.5rem; }
  .card { padding: 1.25rem; }
}

/* Utility classes */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

/* Animation Utility */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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