/* ==========================================================================
   Agni Nizhalgal Foundation - Modern Responsive CSS Design System
   ========================================================================== */

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

:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  --primary: #10b981;
  --primary-hover: #059669;
  --primary-light: #ecfdf5;
  --primary-glow: rgba(16, 185, 129, 0.25);
  
  --secondary: #064e3b;
  --accent: #f59e0b;
  --accent-light: #fef3c7;

  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-dark: #061c14;

  --text-dark: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --text-white: #ffffff;

  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px -4px rgba(16, 185, 129, 0.12);
  --shadow-lg: 0 20px 40px -10px rgba(6, 78, 59, 0.18);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Core */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.25;
}

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Common Grid Utilities for Responsive Layouts */
.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: 1.5rem;
}

/* ==========================================================================
   NAVBAR & DROPDOWNS
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 1.5rem;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-dark);
  padding: 0.6rem 0.4rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  cursor: pointer;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.nav-item.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dark);
  white-space: nowrap;
}

.dropdown-item:hover {
  background: var(--primary-light);
  color: var(--primary-hover);
}

/* Right Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.mobile-toggle {
  display: none;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(16, 185, 129, 0.2);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  font-size: 1.4rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.mobile-toggle:hover {
  background: var(--primary);
  color: white;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #059669);
  color: var(--text-white);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.45);
}

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

.btn-secondary:hover {
  background: #d1fae5;
}

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

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

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #d97706);
  color: white;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
}

/* ==========================================================================
   HERO & CONTENT SECTIONS
   ========================================================================== */
.hero {
  position: relative;
  padding: 4.5rem 0 5.5rem;
  background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(6, 78, 59, 0.08) 0%, transparent 50%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-hover);
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
}

.hero-title span {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-card {
  position: relative;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

/* Feature Cards Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: -3rem;
  position: relative;
  z-index: 10;
}

.pillar-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.pillar-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.pillar-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
}

/* Mission & Vision Cards Box */
.mission-vision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  width: 100%;
}

.mission-card {
  background: var(--primary-light);
  padding: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-left: 6px solid var(--primary);
}

.vision-card {
  background: var(--accent-light);
  padding: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-left: 6px solid var(--accent);
}

/* Stats Section */
.stats-section {
  background: linear-gradient(135deg, var(--bg-dark), #092e21);
  color: white;
  padding: 4rem 2rem;
  border-radius: var(--radius-lg);
  margin: 4rem 0;
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.95rem;
  color: #cbd5e1;
  font-weight: 500;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 3.5rem;
}

.section-subtitle {
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  color: var(--text-dark);
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.75rem;
}

.content-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-img-wrapper {
  position: relative;
  height: 210px;
  overflow: hidden;
  background: #e2e8f0;
}

.card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.content-card:hover .card-img-wrapper img {
  transform: scale(1.06);
}

.card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(6, 78, 59, 0.85);
  color: white;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--text-dark);
}

.card-excerpt {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* FAQ Accordion */
.accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.accordion-header:hover {
  color: var(--primary);
}

.accordion-body {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  display: none;
  font-size: 0.95rem;
}

.accordion-item.active .accordion-body {
  display: block;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

/* Forms */
.form-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  max-width: 720px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--bg-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 4px var(--primary-glow);
}

/* Bank Details Card */
.bank-card {
  background: linear-gradient(135deg, #064e3b, #0f4c3a);
  color: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.bank-row {
  display: flex;
  justify-content: space-between;
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.bank-row:last-child {
  border-bottom: none;
}

.bank-label {
  color: #a7f3d0;
  font-size: 0.9rem;
}

.bank-value {
  font-weight: 700;
  font-family: monospace;
  font-size: 1.05rem;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: #cbd5e1;
  padding: 4rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  color: white;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #64748b;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Mobile & Tablet Layout Fixes)
   ========================================================================== */

@media (max-width: 992px) {
  .mobile-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem 2rem 2rem;
    gap: 0.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    max-height: calc(100vh - 76px);
    overflow-y: auto;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 0.8rem 0;
    font-size: 1rem;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-light);
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding-left: 1rem;
    display: none;
    background: var(--bg-main);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
  }

  .nav-item.dropdown.open .dropdown-menu {
    display: block;
  }

  .hero-grid {
    grid-template-columns: 1fr !important;
    text-align: center;
  }
  
  .hero-desc {
    margin: 0 auto 2rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr !important;
  }

  .mission-vision-grid {
    grid-template-columns: 1fr !important;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  /* Force 1 Column on Mobile for all Card Grids & Layouts */
  .grid-2, .grid-3, .grid-4,
  .cards-grid, .pillars-grid,
  .mission-vision-grid {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }

  .mission-card, .vision-card {
    padding: 1.5rem !important;
  }

  .hero-card {
    padding: 1.5rem !important;
  }

  .form-card {
    padding: 1.5rem !important;
  }

  .form-grid {
    grid-template-columns: 1fr !important;
  }

  .form-group.full-width {
    grid-column: span 1 !important;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem !important;
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.85rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: 1fr !important;
  }
}