:root {
  --gvp-maroon: #851414;
  --gvp-maroon-dark: #630c0c;
  --gvp-maroon-light: #9e1b1b;
  --gvp-navy: #002147;
  --gvp-navy-light: #0d3b66;
  --gvp-gold: #c59b27;
  --gvp-gold-light: #f3e5ab;
  --bg-color: #f4f6f9;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header matching the college banner */
.college-header {
  background: #ffffff;
  border-bottom: 3px solid var(--gvp-maroon);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  padding: 10px 24px 14px 24px;
}

.header-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--gvp-navy);
  margin-bottom: 4px;
}

.header-center-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  position: relative;
}

.college-logo-img {
  width: 78px;
  height: 78px;
  object-fit: contain;
}

.college-titles {
  text-align: center;
}

.college-name-1 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--gvp-maroon);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  line-height: 1.15;
}

.college-name-2 {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--gvp-maroon);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  line-height: 1.15;
  margin-top: 2px;
}

.college-subtext {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gvp-navy);
  margin-top: 3px;
}

.college-address {
  font-size: 0.82rem;
  color: var(--gvp-navy);
  margin-top: 1px;
}

/* Portal Title Bar */
.portal-subbar {
  background: linear-gradient(90deg, var(--gvp-navy) 0%, #153e75 100%);
  color: #ffffff;
  padding: 8px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}

.portal-subbar h2 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-quick-links {
  display: flex;
  gap: 12px;
}

.header-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 5px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  text-decoration: none;
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.28);
}

/* Main Container */
.main-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px;
  width: 100%;
  flex: 1;
}

/* Navigation Tabs */
.portal-tabs-nav {
  display: flex;
  gap: 12px;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 20px;
}

.portal-tab-btn {
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  margin-bottom: -2px;
}

.portal-tab-btn:hover {
  color: var(--gvp-navy);
  background-color: rgba(0, 33, 71, 0.04);
}

.portal-tab-btn.active {
  color: var(--gvp-maroon);
  border-bottom-color: var(--gvp-maroon);
  background-color: #fff;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
}

.tab-badge {
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  background-color: #e2e8f0;
  color: #334155;
}

.portal-tab-btn.active .tab-badge {
  background-color: #fee2e2;
  color: var(--gvp-maroon);
}

.portal-tab-content {
  display: none;
}

.portal-tab-content.active {
  display: block;
}

/* Inline Upload Card for Tab 1 */
.inline-upload-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.inline-upload-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.upload-drop-inline {
  flex: 1;
  min-width: 280px;
  border: 2px dashed #cbd5e1;
  border-radius: 6px;
  padding: 12px 18px;
  text-align: center;
  background: #f8fafc;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: all 0.2s;
}

.upload-drop-inline:hover, .upload-drop-inline.dragover {
  border-color: var(--gvp-maroon);
  background-color: #fff8f8;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border-left: 4px solid var(--gvp-maroon);
}

.stat-card.stat-sent {
  border-left-color: var(--success);
}

.stat-card.stat-pending {
  border-left-color: var(--warning);
}

.stat-card.stat-failed {
  border-left-color: var(--danger);
}

.stat-info .stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.stat-info .stat-val {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 2px;
}

.stat-icon {
  font-size: 2rem;
  opacity: 0.8;
}

/* Actions & Filter Toolbar */
.toolbar-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 16px 20px;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  flex: 1;
}

.search-input {
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.9rem;
  width: 260px;
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--gvp-maroon);
}

.select-filter {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.9rem;
  background-color: #fff;
  outline: none;
  cursor: pointer;
}

.select-filter:focus {
  border-color: var(--gvp-maroon);
}

.action-buttons-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.btn {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  transition: all 0.2s;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--gvp-maroon);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--gvp-maroon-dark);
}

.btn-secondary {
  background-color: var(--gvp-navy);
  color: #ffffff;
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--gvp-navy-light);
}

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}

.btn-success:hover:not(:disabled) {
  background-color: #059669;
}

.btn-outline {
  background-color: #ffffff;
  color: var(--gvp-navy);
  border: 1px solid var(--border-color);
}

.btn-outline:hover:not(:disabled) {
  background-color: #f8fafc;
  border-color: var(--gvp-navy);
}

.btn-sm {
  padding: 4px 8px;
  font-size: 0.78rem;
  border-radius: 4px;
}

/* Upload Dropzone Modal & Inline */
.upload-modal-box {
  border: 2px dashed #cbd5e1;
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  background-color: #f8fafc;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 16px;
}

.upload-modal-box:hover, .upload-modal-box.dragover {
  border-color: var(--gvp-maroon);
  background-color: #fff8f8;
}

/* Students Table */
.table-container {
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  overflow-x: auto;
}

table.students-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

table.students-table th {
  background-color: #f8fafc;
  color: var(--gvp-navy);
  font-weight: 700;
  padding: 12px 14px;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

table.students-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

table.students-table tr:hover {
  background-color: #fbfcfe;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  gap: 4px;
}

.badge-pending {
  background-color: #fef3c7;
  color: #92400e;
}

.badge-sent {
  background-color: #d1fae5;
  color: #065f46;
}

.badge-failed {
  background-color: #fee2e2;
  color: #991b1b;
}

.badge-program {
  background-color: #ede9fe;
  color: #5b21b6;
  font-weight: 700;
}

.actions-cell {
  white-space: nowrap;
  display: flex;
  gap: 6px;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 20px;
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: #ffffff;
  border-radius: 10px;
  width: 100%;
  max-width: 900px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  overflow: hidden;
  animation: modalSlide 0.25s ease;
}

.modal-dialog.modal-lg {
  max-width: 1050px;
  height: 92vh;
}

@keyframes modalSlide {
  from { transform: translateY(20px); }
  to { transform: translateY(0); }
}

.modal-header {
  background: var(--gvp-navy);
  color: #ffffff;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.modal-close-btn:hover {
  opacity: 1;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  background-color: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* PDF iframe in preview modal */
.pdf-preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  min-height: 600px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #ffffff;
  border-radius: 6px;
  padding: 12px 18px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  border-left: 4px solid var(--gvp-maroon);
  animation: toastIn 0.3s ease;
  min-width: 280px;
  max-width: 400px;
}

.toast.toast-success { border-left-color: var(--success); }
.toast.toast-danger { border-left-color: var(--danger); }
.toast.toast-info { border-left-color: var(--gvp-navy); }

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Progress bar inside Batch Sending Modal */
.progress-container {
  width: 100%;
  background-color: #e5e7eb;
  border-radius: 8px;
  height: 16px;
  overflow: hidden;
  margin: 14px 0;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gvp-maroon), #b91c1c);
  width: 0%;
  transition: width 0.3s ease;
}

/* Form Styles */
.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gvp-navy);
  margin-bottom: 5px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.88rem;
  outline: none;
}

.form-control:focus {
  border-color: var(--gvp-maroon);
}

.form-help {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Footer */
.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 14px 24px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}