/* AKTU Results - Mobile-First CSS */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0F2B5B;
  --accent: #F97316;
  --white: #FFFFFF;
  --light-gray: #F3F4F6;
  --text-dark: #1F2937;
  --text-light: #6B7280;
  --border: #E5E7EB;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
}

/* Header */
.header {
  background: var(--primary);
  color: var(--white);
  padding: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
}

.logo span {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover {
  color: var(--accent);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
  color: var(--white);
  padding: 3rem 1rem;
  text-align: center;
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 800;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.btn-primary:hover {
  background: #ea580c;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.btn-secondary {
  display: inline-block;
  background: var(--white);
  color: var(--primary);
  padding: 0.8rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s;
  border: 2px solid var(--primary);
}

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Section */
.section {
  padding: 3rem 1rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--primary);
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 2rem;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Cards */
.card {
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: all 0.3s;
  border: 1px solid var(--border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

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

.card-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.card-link:hover {
  text-decoration: underline;
}

/* Semester Buttons */
.semester-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.semester-btn {
  background: var(--white);
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 1.2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  text-align: center;
  text-decoration: none;
  display: block;
}

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

/* Calculator Styles */
.calculator {
  background: var(--light-gray);
  padding: 2rem;
  border-radius: 12px;
  max-width: 600px;
  margin: 2rem auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.form-input {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  transition: border 0.3s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
}

.result-box {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  margin-top: 1.5rem;
  border-left: 4px solid var(--accent);
}

.result-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 0.5rem;
}

/* FAQ Section */
.faq {
  max-width: 800px;
  margin: 2rem auto;
}

.faq-item {
  background: var(--white);
  margin-bottom: 1rem;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  padding: 1.2rem;
  background: var(--light-gray);
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--primary);
}

.faq-question:hover {
  background: #e5e7eb;
}

.faq-answer {
  padding: 1.2rem;
  display: none;
  color: var(--text-dark);
}

.faq-answer.active {
  display: block;
}

/* Table */
.table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.table th {
  background: var(--primary);
  color: var(--white);
  padding: 1rem;
  text-align: left;
  font-weight: 600;
}

.table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.table tr:hover {
  background: var(--light-gray);
}

/* Breadcrumb */
.breadcrumb {
  padding: 1rem;
  background: var(--light-gray);
}

.breadcrumb-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

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

.breadcrumb-item a {
  color: var(--primary);
  text-decoration: none;
}

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

/* Alert Boxes */
.alert {
  padding: 1rem;
  border-radius: 8px;
  margin: 1rem 0;
}

.alert-info {
  background: #dbeafe;
  border-left: 4px solid #3b82f6;
  color: #1e40af;
}

.alert-warning {
  background: #fef3c7;
  border-left: 4px solid #f59e0b;
  color: #92400e;
}

.alert-success {
  background: #d1fae5;
  border-left: 4px solid #10b981;
  color: #065f46;
}

/* Footer */
.footer {
  background: var(--primary);
  color: var(--white);
  padding: 3rem 1rem 1rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--accent);
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.footer-links a:hover {
  opacity: 1;
  text-decoration: underline;
}

.footer-disclaimer {
  background: rgba(0,0,0,0.2);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Sticky Bottom Bar */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--accent);
  color: var(--white);
  padding: 1rem;
  text-align: center;
  z-index: 99;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.sticky-bar a {
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

/* Modal/Popup */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  max-width: 500px;
  width: 100%;
  text-align: center;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-light);
}

.modal-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

/* Content Formatting */
.content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.content h2 {
  color: var(--primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

.content h3 {
  color: var(--primary);
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  font-size: 1.4rem;
}

.content p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.content ul, .content ol {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

.content li {
  margin-bottom: 0.5rem;
}

/* AdSense Placeholder */
.ad-container {
  margin: 2rem auto;
  padding: 2rem;
  background: var(--light-gray);
  border-radius: 8px;
  text-align: center;
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary);
    padding: 1rem;
  }
  
  .nav.active {
    display: flex;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .sticky-bar {
    padding: 0.8rem;
  }
}

/* Print Styles */
@media print {
  .header, .footer, .sticky-bar, .ad-container, .modal {
    display: none;
  }
}