:root {
  --primary-color: #4361ee;
  --primary-dark: #3a56d4;
  --secondary-color: #3f37c9;
  --accent-color: #4cc9f0;
  --light-bg: #f8f9fa;
  --card-bg: #ffffff;
  --dark-text: #212529;
  --light-text: #6c757d;
  --border-radius: 12px;
  --box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  --transition: all 0.3s ease;
}

* { 
  margin:0; 
  padding:0; 
  box-sizing:border-box; 
}

body { 
  font-family:'Poppins', sans-serif; 
  background:var(--light-bg); 
  color:var(--dark-text); 
  line-height:1.6;
}

/* HEADER */
header {
  position: sticky; 
  top:0; 
  width:100%;
  background: var(--primary-color);
  display: flex; 
  align-items: center; 
  justify-content: space-between;
  padding: 1rem 2rem;
  box-shadow: var(--box-shadow);
  backdrop-filter: blur(8px);
  z-index:1000;
  transition: var(--transition);
}

.nav-toggle { 
  display:none; 
  background:none; 
  border:none; 
  color:white; 
  font-size:1.4rem; 
  cursor:pointer; 
  transition: var(--transition);
}

.nav-toggle:hover {
  opacity: 0.8;
}

.logo {
  color:white; 
  font-size:1.5rem; 
  font-weight:600; 
  text-decoration:none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  font-size: 1.2rem;
}

#headerTitle {
  font-size:0.9rem; 
  color:white; 
  opacity: 0.9;
  font-weight: 400;
}

/* SEARCH BAR */
.search-container {
  position: relative;
  flex: 1;
  max-width: 400px;
  margin: 0 1rem;
}

.search-container input {
  width: 100%; 
  padding: 0.8rem 1.2rem 0.8rem 3rem; 
  border: 1px solid #e9ecef;
  border-radius: var(--border-radius);
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: var(--transition);
}

.search-container input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 2px 12px rgba(67, 97, 238, 0.2);
}

.search-container i {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--light-text);
}

/* NAV LINKS (desktop) */
.nav-links {
  display:flex; 
  gap:1.5rem;
  align-items: center;
}

.nav-links a {
  color:white; 
  text-decoration:none; 
  font-weight:500; 
  padding:0.5rem 0;
  position: relative;
  transition: var(--transition);
}

.nav-links a:hover {
  opacity: 0.9;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: white;
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

/* MAIN CONTENT */
.main-container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.page-title {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--dark-text);
}

.scheme-selector {
  display: flex;
  gap: 0.5rem;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 0.5rem;
  box-shadow: var(--box-shadow);
}

.scheme-btn {
  padding: 0.5rem 1rem;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-family: 'Poppins', sans-serif;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

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

.exam-badge {
  background: var(--primary-color);
  color: white;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  display: inline-block;
  margin-bottom: 1.5rem;
}

/* TABLE STYLES */
.table-container {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  margin-bottom: 2rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 1rem 1.5rem;
  text-align: left;
}

thead {
  background: var(--primary-color);
}

th {
  color: white;
  font-weight: 500;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--primary-color);
}


tbody tr {
  border-bottom: 1px solid #f1f3f5;
  transition: var(--transition);
}

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

tbody tr:hover {
  background: #f8f9fa;
}

.preview-btn {
  background: var(--primary-color);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.preview-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.2);
}

.empty-state {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--light-text);
}

.empty-state i {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #e9ecef;
}

/* PAGINATION */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.pagination button {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Poppins', sans-serif;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination button:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.2);
}

.page-info {
  font-size: 0.9rem;
  color: var(--light-text);
  margin: 0 1rem;
}

/* FOOTER */
footer {
  background: var(--primary-color);
  color: white;
  text-align: center;
  padding: 1.5rem;
  margin-top: 3rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

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

.footer-links a:hover {
  opacity: 0.8;
}

.copyright {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* MOBILE STYLES */
@media (max-width: 768px) {
  header {
    padding: 1rem;
    flex-wrap: wrap;
  }
  
  .nav-toggle { 
    display: block; 
  }
  
  .nav-links { 
    display: none; 
    position: absolute;
    top: 100%;
    right: 1rem;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    flex-direction: column;
    gap: 1rem;
    width: 250px;
  }
  
  .nav-links.active { 
    display: flex; 
  }
  
  .nav-links a {
    color: var(--dark-text);
    padding: 0.5rem 0;
  }
  
  .nav-links a::after {
    background: var(--primary-color);
  }
  
  .search-container {
    max-width: 100%;
    margin: 0.5rem 0;
  }
  
  .main-container {
    padding: 0 1rem;
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .scheme-selector {
    width: 100%;
    overflow-x: auto;
    padding: 0.5rem;
  }
  
  th, td {
    padding: 0.8rem 1rem;
  }
  
  .footer-links {
    flex-wrap: wrap;
  }
}

/* ANIMATIONS */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* MODAL STYLES - MATCHING YOUR DESIGN SYSTEM */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.modal-content {
  position: relative;
  background-color: var(--card-bg);
  margin: 2% auto;
  padding: 1.5rem;
  width: 90%;
  max-width: 900px;
  height: 85vh;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
  from { 
    opacity: 0; 
    transform: translateY(-20px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

.close-modal {
  position: absolute;
  right: 1.5rem;
  top: 1.2rem;
  font-size: 2rem;
  font-weight: bold;
  color: var(--light-text);
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
  background: rgba(255, 255, 255, 0.2);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: none;
}

.close-modal:hover {
  color: var(--dark-text);
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

#pdfViewer {
  width: 100%;
  height: calc(100% - 20px);
  border-radius: calc(var(--border-radius) - 5px);
  background: #f8f9fa;
  border: none;
}

/* ACTION BUTTONS - MATCHING YOUR STYLE */
.action-buttons {
  display: flex;
  gap: 0.75rem;
}

.preview-btn, .download-btn {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  border: none;
  cursor: pointer;
  font-family: 'Poppins', sans-serif;
}

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

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

.preview-btn:hover, .download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.2);
}

.preview-btn:hover {
  background-color: var(--primary-dark);
}

.download-btn:hover {
  background-color: #3730a3;
}

.not-available {
  color: var(--light-text);
  font-style: italic;
  font-size: 0.9rem;
}

/* MOBILE OPTIMIZATIONS */
@media (max-width: 768px) {
  .modal-content {
    width: 95%;
    height: 80vh; /* Larger mobile view */
    margin: 5% auto;
    padding: 1.2rem;
  }
  
  .close-modal {
    right: 1rem;
    top: 1rem;
    font-size: 1.8rem;
    background: rgba(0, 0, 0, 0.2);
    color: white;
  }
  
  #pdfViewer {
    height: calc(100% - 15px);
  }
  
  .action-buttons {
    flex-direction: row; /* Keep buttons side-by-side */
    justify-content: flex-start;
  }
  
  .preview-btn, .download-btn {
    padding: 0.6rem 1rem;
  }
}

@media (max-width: 480px) {
  .modal-content {
    height: 85vh; /* Even larger on small devices */
    margin: 2% auto;
    width: 98%;
  }
  
  .close-modal {
    right: 50%;
    transform: translateX(50%);
    top: auto;
    bottom: 20px;
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    width: 50px;
    height: 50px;
  }
  
  .action-buttons {
    flex-direction: column; /* Stack buttons vertically on smallest screens */
  }
  
  .preview-btn, .download-btn {
    width: 100%;
    justify-content: center;
  }
}