/* 
=============================================================================
  PTF Punjab - Teachers E-Bike Scheme 2026
  Main Stylesheet
============================================================================= 
*/

/* --- CSS Custom Properties (Variables) --- */
:root {
  /* Color Palette - Punjab Government Greens & Accents */
  --green-primary: #006B3F;
  --green-dark: #004D2C;
  --green-light: #E8F5E9;
  --green-hover: #008f54;
  --gold-accent: #D4A017;
  --gold-light: #F5E6A3;
  --gold-hover: #e0ac24;
  
  /* Grays & Neutrals */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* Status Colors */
  --error: #DC2626;
  --error-bg: #FEF2F2;
  --success: #16A34A;
  --success-bg: #F0FDF4;
  --warning: #D97706;
  --warning-bg: #FFFBEB;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Poppins', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  
  /* Layout */
  --container-max: 1280px;
  --border-radius-sm: 0.25rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  --border-radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Header Height */
  --header-height: 80px;
}

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

html {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-50);
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p { margin-bottom: var(--spacing-4); }

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

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

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style-position: inside;
  margin-bottom: var(--spacing-4);
}

/* --- Layout & Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
  .container { padding: 0 var(--spacing-6); }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--spacing-8); }
}

.section {
  padding: var(--spacing-16) 0;
}

@media (min-width: 768px) {
  .section { padding: var(--spacing-24) 0; }
}

.bg-white { background-color: var(--white); }
.bg-gray-50 { background-color: var(--gray-50); }
.bg-green-light { background-color: var(--green-light); }
.bg-green-primary { background-color: var(--green-primary); color: var(--white); }
.bg-green-dark { background-color: var(--green-dark); color: var(--white); }

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

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-green { color: var(--green-primary); }
.text-gold { color: var(--gold-accent); }
.text-gray { color: var(--gray-600); }
.text-white { color: var(--white); }

/* Flexbox & Grid */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }
.flex-wrap { flex-wrap: wrap; }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--gold-accent);
  color: var(--gray-900);
  padding: var(--spacing-2) var(--spacing-4);
  z-index: 100;
  transition: top var(--transition-fast);
  font-weight: bold;
}

.skip-link:focus {
  top: 0;
}

*:focus-visible {
  outline: 3px solid var(--gold-accent);
  outline-offset: 2px;
}

/* Minimum Touch Target for Mobile */
button, 
a.btn, 
.nav-link,
input[type="submit"] {
  min-height: 44px;
  min-width: 44px;
}

/* --- Components --- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: var(--border-radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--green-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--gold-accent);
  color: var(--gray-900);
}

.btn-secondary:hover {
  background-color: var(--gold-hover);
  color: var(--gray-900);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* Header & Navigation */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
}

.header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--green-primary);
}

.logo img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: none; /* Hidden on mobile */
  gap: var(--spacing-6);
  align-items: center;
}

.nav-link {
  color: var(--gray-700);
  font-weight: 500;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--green-primary);
  transition: width var(--transition-fast);
}

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

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

/* Mobile Menu Button */
.menu-btn {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
}

.menu-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--gray-800);
  position: relative;
  transition: background-color var(--transition-fast);
}

.menu-icon::before, .menu-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background-color: var(--gray-800);
  transition: transform var(--transition-fast);
}

.menu-icon::before { top: -6px; }
.menu-icon::after { bottom: -6px; }

/* Mobile Menu Open State */
.nav-open .menu-icon { background-color: transparent; }
.nav-open .menu-icon::before { transform: translateY(6px) rotate(45deg); }
.nav-open .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }

/* Mobile Navigation Drawer */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: -100%;
  width: 80%;
  max-width: 300px;
  height: calc(100vh - var(--header-height));
  background-color: var(--white);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-6);
  transition: left var(--transition-normal);
  overflow-y: auto;
  z-index: 40;
}

.nav-open .mobile-nav {
  left: 0;
}

.mobile-nav .nav-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-4);
}

.mobile-nav .nav-link {
  width: 100%;
  padding: var(--spacing-2) 0;
  border-bottom: 1px solid var(--gray-200);
}

.nav-overlay {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 30;
}

.nav-open .nav-overlay {
  opacity: 1;
  visibility: visible;
}

@media (min-width: 1024px) {
  .menu-btn { display: none; }
  .nav-links { display: flex; }
  .mobile-nav, .nav-overlay { display: none !important; }
}

/* Hero Section */
.hero {
  position: relative;
  background-color: var(--green-dark);
  color: var(--white);
  padding: var(--spacing-20) 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 107, 63, 0.9) 0%, rgba(0, 77, 44, 0.8) 100%);
  z-index: 1;
}

.hero-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--white);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

/* Statistics Bar */
.stats-bar {
  background-color: var(--white);
  padding: var(--spacing-8) 0;
  margin-top: calc(var(--spacing-12) * -1);
  position: relative;
  z-index: 10;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-4);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--green-primary);
  line-height: 1;
  margin-bottom: var(--spacing-2);
}

.stat-label {
  color: var(--gray-600);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
}

/* Cards */
.card {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
  border: 1px solid var(--gray-200);
}

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

.card-icon {
  width: 64px;
  height: 64px;
  background-color: var(--green-light);
  color: var(--green-primary);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-4);
}

/* Timeline (How it works) */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px; /* Center of the dot */
  height: 100%;
  width: 2px;
  background-color: var(--green-light);
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-8);
  padding-left: 60px;
}

@media (min-width: 768px) {
  .timeline-item {
    padding-left: 0;
    width: 50%;
  }
  
  .timeline-item:nth-child(odd) {
    float: left;
    clear: right;
    padding-right: 40px;
    text-align: right;
  }
  
  .timeline-item:nth-child(even) {
    float: right;
    clear: left;
    padding-left: 40px;
    margin-top: 40px; /* Offset for better visual flow */
  }
  
  .timeline::after {
    content: '';
    display: table;
    clear: both;
  }
}

.timeline-dot {
  position: absolute;
  top: 0;
  left: 12px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--gold-accent);
  border: 4px solid var(--white);
  box-shadow: var(--shadow);
  z-index: 2;
}

@media (min-width: 768px) {
  .timeline-item:nth-child(odd) .timeline-dot {
    right: -12px;
    left: auto;
  }
  .timeline-item:nth-child(even) .timeline-dot {
    left: -12px;
  }
}

.timeline-content {
  background: var(--white);
  padding: var(--spacing-6);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

/* Form Styles - Matches Screenshot */
.form-container {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto;
}

.form-header {
  border-bottom: 2px solid var(--gold-accent);
  padding: var(--spacing-6);
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.form-header::before {
    content: '';
    display: block;
    width: 4px;
    height: 32px;
    background-color: var(--green-primary);
}

.form-header h2 {
  margin: 0;
  color: var(--green-primary);
  font-size: 1.5rem;
}

.form-body {
  padding: var(--spacing-6);
}

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-label {
  display: flex;
  justify-content: space-between;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--spacing-2);
  font-size: 0.875rem;
}

.form-label .urdu {
  color: var(--green-primary);
  font-family: 'Noto Nastaliq Urdu', serif; /* Or similar fallback */
}

.form-control {
  width: 100%;
  padding: var(--spacing-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius-sm);
  background-color: #F8F9FA; /* Slightly gray bg like screenshot */
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--gray-800);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--green-primary);
  box-shadow: 0 0 0 3px rgba(0, 107, 63, 0.1);
  background-color: var(--white);
}

.form-control::placeholder {
  color: var(--gray-400);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
}

/* File Upload specific styling */
.file-upload-container {
    border: 1px dashed var(--gray-300);
    padding: var(--spacing-4);
    border-radius: var(--border-radius-sm);
    background-color: #F8F9FA;
    text-align: center;
}

.file-upload-container input[type="file"] {
    max-width: 100%;
}

.form-submit-container {
  text-align: center;
  margin-top: var(--spacing-8);
}

.btn-submit {
  background-color: var(--green-dark);
  color: var(--white);
  padding: var(--spacing-3) var(--spacing-8);
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: var(--border-radius-full);
  width: 100%;
  max-width: 400px;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn-submit:hover {
  background-color: var(--green-primary);
  transform: translateY(-2px);
}

/* Form Validation States */
.form-control.is-invalid {
  border-color: var(--error);
  background-color: var(--error-bg);
}

.invalid-feedback {
  color: var(--error);
  font-size: 0.75rem;
  margin-top: var(--spacing-1);
  display: none;
}

.form-control.is-invalid ~ .invalid-feedback {
  display: block;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: var(--spacing-4);
  right: var(--spacing-4);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.toast {
  padding: var(--spacing-4);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  color: var(--gray-900);
  background: var(--white);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  min-width: 300px;
  transform: translateX(120%);
  transition: transform var(--transition-normal);
}

.toast.show {
  transform: translateX(0);
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--error); }

/* FAQs Accordion */
.accordion-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-4);
  background-color: var(--white);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-4);
  background: none;
  border: none;
  text-align: left;
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--gray-900);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.accordion-icon {
  transition: transform var(--transition-fast);
}

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

.accordion-content {
  padding: 0 var(--spacing-4);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.accordion-item.active .accordion-content {
  padding: 0 var(--spacing-4) var(--spacing-4) var(--spacing-4);
  max-height: 1000px; /* Arbitrary large number */
}

/* Breadcrumbs */
.breadcrumb {
  padding: var(--spacing-4) 0;
  background-color: var(--gray-100);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  list-style: none;
  margin: 0;
  font-size: 0.875rem;
}

.breadcrumb-item {
  color: var(--gray-600);
}

.breadcrumb-item a {
  color: var(--green-primary);
}

.breadcrumb-item a:hover {
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--gray-400);
}

/* Footer */
.footer {
  background-color: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-16) 0 var(--spacing-8) 0;
  margin-top: auto; /* Push to bottom */
}

.footer h3, .footer h4 {
  color: var(--white);
}

.footer-links {
  list-style: none;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: var(--gray-400);
}

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

.footer-bottom {
  margin-top: var(--spacing-12);
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--gray-800);
  text-align: center;
  font-size: 0.875rem;
}

/* WhatsApp Widget */
.whatsapp-widget {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  transition: transform var(--transition-fast);
}

.whatsapp-widget:hover {
  transform: scale(1.1);
  color: white;
}

/* Scroll Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-normal);
}

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

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 3px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: var(--white);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}