/* admin/style.css - Advanced Dark Glassmorphism CRM Theme */

:root {
    --bg-color: #020306;
    --card-bg: rgba(10, 12, 22, 0.65);
    --header-bg: rgba(10, 12, 22, 0.85);
    --sidebar-bg: rgba(10, 12, 22, 0.7);
    --border-color: rgba(255, 255, 255, 0.05);
    
    --primary-color: #b026ff; /* Neon Purple */
    --primary-glow: rgba(176, 38, 255, 0.35);
    --primary-hover: #c457ff;
    
    --accent-color: #00f0ff; /* Electric Cyan */
    --accent-glow: rgba(0, 240, 255, 0.25);
    
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --error-color: #ff3e3e;
    --success-color: #00ff66;
    --warning-color: #ffa500;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
    box-shadow: 0 0 10px var(--primary-glow);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    overflow: hidden;
}

/* 1. Login Gate Screen Styles */
.login-gate-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #020306;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(176, 38, 255, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(0, 240, 255, 0.04) 0%, transparent 40%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.login-gate-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-radius: 28px;
    max-width: 440px;
    width: 100%;
    padding: 45px;
    text-align: center;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
    animation: scaleUp 0.5s ease-out;
}

@keyframes scaleUp {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.gate-logo {
    font-size: 36px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px var(--primary-glow));
}

.login-gate-box h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.login-gate-box p {
    font-size: 13.5px;
    color: var(--text-muted);
    margin-bottom: 30px;
    line-height: 1.5;
}

.gate-error {
    background: rgba(255, 62, 62, 0.1);
    border: 1px solid rgba(255, 62, 62, 0.2);
    color: var(--error-color);
    border-radius: 10px;
    padding: 12px;
    font-size: 13px;
    margin-bottom: 20px;
    text-align: left;
}

.gate-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 16px;
    color: var(--text-color);
    font-size: 15px;
    outline: none;
    margin-bottom: 18px;
    text-align: center;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.gate-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 12px var(--primary-glow);
    background: rgba(255, 255, 255, 0.04);
}

.gate-btn {
    width: 100%;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 14px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--primary-glow);
    transition: all 0.3s;
}

.gate-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(176, 38, 255, 0.5);
}

/* 2. Main Dashboard Layout */
.app-layout {
    width: 100vw;
    height: 100vh;
    display: flex;
}

/* Admin Sidebar Navigation Scrollbar */
.admin-sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.admin-brand {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-brand img {
    height: 38px;
    width: 38px;
    object-fit: contain;
    filter: drop-shadow(0 0 6px var(--primary-glow));
}

.admin-brand span {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #fff 50%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-section-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.8px;
    margin: 16px 0 6px 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 10px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.nav-item:hover {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.02);
}

.nav-item.active {
    color: var(--primary-color);
    background: rgba(176, 38, 255, 0.06);
    border-color: rgba(176, 38, 255, 0.15);
}

/* Custom PWA Installation Toast */
.pwa-install-toast {
    margin: 10px 14px;
    padding: 14px;
    background: linear-gradient(135deg, rgba(176, 38, 255, 0.08) 0%, rgba(0, 240, 255, 0.08) 100%);
    border: 1px solid rgba(176, 38, 255, 0.25);
    border-radius: 12px;
    text-align: center;
}

.pwa-install-toast h5 {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 2px;
}

.pwa-install-toast p {
    font-size: 10.5px;
    color: var(--text-muted);
    line-height: 1.35;
    margin-bottom: 10px;
}

.btn-install-pwa {
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 8px var(--primary-glow);
    transition: 0.3s;
    width: 100%;
}

.btn-install-pwa:hover {
    background: var(--primary-hover);
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.btn-admin-logout {
    width: 100%;
    background: rgba(255, 62, 62, 0.05);
    border: 1px solid rgba(255, 62, 62, 0.15);
    color: var(--error-color);
    padding: 10px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-admin-logout:hover {
    background: var(--error-color);
    color: #fff;
}

/* Content Container */
.admin-content {
    flex: 1;
    overflow-y: auto;
    padding: 35px;
    background-image: radial-gradient(circle at 50% 0%, rgba(176, 38, 255, 0.02) 0%, transparent 60%);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    margin-bottom: 30px;
}

.panel-header h2, .panel-header-row h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}

.panel-header p, .panel-header-row p {
    font-size: 13.5px;
    color: var(--text-muted);
}

.panel-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

/* Stats Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.stat-icon.purple { background: rgba(176, 38, 255, 0.1); color: var(--primary-color); }
.stat-icon.green { background: rgba(0, 255, 102, 0.1); color: var(--success-color); }
.stat-icon.yellow { background: rgba(255, 165, 0, 0.1); color: var(--warning-color); }
.stat-icon.cyan { background: rgba(0, 240, 255, 0.1); color: var(--accent-color); }

.stat-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-title {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-val {
    font-size: 22px;
    font-weight: 700;
}

/* Dashboard detail layouts */
.dashboard-details-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 24px;
}

.details-chart-card, .details-logs-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
}

.details-chart-card h3, .details-logs-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

/* Circular Dashboard Progress Charts */
.custom-progress-charts {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 10px 0;
    flex-wrap: wrap;
    gap: 20px;
}

.circular-chart {
  display: block;
  margin: 10px auto;
  max-width: 140px;
  max-height: 140px;
}

.circle-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.05);
  stroke-width: 2.8;
}

.circle {
  fill: none;
  stroke-width: 2.8;
  stroke-linecap: round;
  transition: stroke-dasharray 0.6s ease;
}

.circular-chart.purple .circle { stroke: var(--primary-color); }

.percentage {
  fill: #fff;
  font-family: sans-serif;
  font-size: 5.5px;
  text-anchor: middle;
  font-weight: bold;
}

.chart-legend {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chart-legend p {
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.legend-dot.purple { background: var(--primary-color); }
.legend-dot.gray { background: rgba(255,255,255,0.15); }

/* Quick Log listing styles */
.quick-logs-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 250px;
    overflow-y: auto;
}

.quick-log-loading {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

.quick-log-item {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.quick-log-item.alert-danger {
    border-color: rgba(255, 62, 62, 0.2);
    background: rgba(255, 62, 62, 0.02);
}

.log-meta-txt {
    line-height: 1.4;
}

.log-meta-txt b {
    color: #fff;
}

.log-status-tag {
    font-size: 9.5px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 6px;
    text-transform: uppercase;
}

.log-status-tag.success { background: rgba(0, 255, 102, 0.1); color: var(--success-color); }
.log-status-tag.mismatch { background: rgba(255, 62, 62, 0.1); color: var(--error-color); }
.log-status-tag.unapproved { background: rgba(255, 165, 0, 0.1); color: var(--warning-color); }

/* Interactive Tables */
.table-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13.5px;
}

.data-table th {
    background: rgba(255, 255, 255, 0.02);
    padding: 16px 20px;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.01);
}

.table-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 40px !important;
}

/* User Card Metadata */
.student-profile-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.student-name {
    font-weight: 600;
    color: #fff;
}

.student-meta-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.receipt-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 12px;
    padding: 4px 10px;
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 8px;
}

.receipt-link:hover {
    background: var(--accent-color);
    color: #020617;
}

/* Fee Switch Switcher */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 4px;
  bottom: 4px;
  background-color: #fff;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--success-color);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Dynamic Token Keys fields */
.credentials-box {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-width: 250px;
}

.credential-key {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px 8px;
    font-family: monospace;
    font-size: 11px;
    color: var(--accent-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.credential-label {
    font-size: 8.5px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-whatsapp-credentials {
    background: rgba(37, 211, 102, 0.08);
    border: 1px solid rgba(37, 211, 102, 0.2);
    color: #25d366;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.btn-whatsapp-credentials:hover {
    background: #25d366;
    color: #fff;
}

/* Table Card Details Actions buttons */
.btn-action-view {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    cursor: pointer;
    font-weight: 500;
}

.btn-action-view:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(176, 38, 255, 0.05);
}

/* Course Manager / Lectures grids */
.lectures-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.grid-loading {
    grid-column: 1 / -1;
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
}

.lecture-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.lecture-card-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
}

.lecture-card-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.lecture-card-seq {
    font-size: 10px;
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
}

.lecture-card-title {
    font-size: 14.5px;
    font-weight: 600;
    color: #fff;
}

.lecture-card-desc {
    font-size: 12.5px;
    color: var(--text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lecture-card-actions {
    margin-top: auto;
    display: flex;
    gap: 8px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.btn-card-edit, .btn-card-delete {
    flex: 1;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 11.5px;
    cursor: pointer;
    font-weight: 600;
    text-align: center;
}

.btn-card-edit {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}
.btn-card-edit:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-card-delete {
    background: rgba(255, 62, 62, 0.05);
    border: 1px solid rgba(255, 62, 62, 0.15);
    color: var(--error-color);
}
.btn-card-delete:hover {
    background: var(--error-color);
    color: #fff;
}

/* Form Design systems */
.glass-form-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
}

.glass-form-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.section-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--text-color);
    font-size: 14px;
    outline: none;
    transition: all 0.3s;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 8px var(--primary-glow);
    background: rgba(255, 255, 255, 0.04);
}

.color-picker-wrapper {
    display: flex;
    gap: 10px;
    align-items: center;
}

.color-picker {
    -webkit-appearance: none;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    cursor: pointer;
    background: transparent;
}

.color-picker::-webkit-color-swatch-wrapper { padding: 0; }
.color-picker::-webkit-color-swatch { border: 1px solid var(--border-color); border-radius: 10px; }

/* Primary/Utility buttons */
.btn-primary, .btn-danger, .btn-danger-outline {
    border: none;
    border-radius: 10px;
    padding: 12px 24px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 12px var(--primary-glow);
}
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--error-color);
    color: #fff;
}
.btn-danger:hover {
    background: #ff2727;
    transform: translateY(-1px);
}

.btn-danger-outline {
    background: rgba(255, 62, 62, 0.05);
    border: 1px solid rgba(255, 62, 62, 0.2);
    color: var(--error-color);
}
.btn-danger-outline:hover {
    background: var(--error-color);
    color: #fff;
}

/* Modals & Backdrops */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(2, 3, 6, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-box {
    background: #0d0e14;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    width: 100%;
    max-width: 500px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    animation: slideDown 0.3s ease-out;
}

.course-modal-box { max-width: 600px; }
.student-details-box { max-width: 650px; }

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.modal-header h3 {
    font-size: 17px;
    font-weight: 600;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover { color: #fff; }

/* Detail body elements */
.detail-sec { margin-bottom: 20px; }
.detail-sec h4 {
    font-size: 10.5px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.detail-item {
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 12.5px;
}

.detail-item small {
    display: block;
    font-size: 9.5px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.detail-item span { font-weight: 500; }

/* Progress breakdown in drawer */
.progress-breakdown-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.progress-breakdown-item {
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12.5px;
}

.progress-bar-wide {
    width: 140px;
    height: 6px;
    background: rgba(255,255,255,0.06);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill-wide {
    height: 100%;
    background: var(--primary-color);
}

.pulse-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.pulse-indicator.green { background: var(--success-color); box-shadow: 0 0 8px var(--success-color); }

/* YouTube Links form previews */
.video-preview-wrapper {
    background: rgba(0,0,0,0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
}

.iframe-preview-container {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 8px;
    overflow: hidden;
    background: #000;
    margin-top: 6px;
}

.iframe-preview-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Danger zone box */
.danger-zone-box {
    border: 1px dashed rgba(255, 62, 62, 0.4);
    background: rgba(255, 62, 62, 0.02);
    border-radius: 12px;
    padding: 16px;
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.danger-zone-box h4 { color: var(--error-color); font-size: 13.5px; font-weight: 600; }
.danger-zone-box p { font-size: 12px; color: var(--text-muted); line-height: 1.4; }

.db-health-status {
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

/* Ad & Coupon grid listing */
.ads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.ad-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ad-card img { width: 100%; height: 110px; object-fit: cover; }
.ad-card-body { padding: 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.ad-card-title { font-size: 13.5px; font-weight: 600; white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
.ad-card-link { font-size: 11px; color: var(--accent-color); text-decoration: none; white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
.ad-card-status { font-size: 10.5px; color: var(--text-muted); }

/* Search control */
.search-input {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 16px;
    color: var(--text-color);
    font-size: 13px;
    outline: none;
    width: 240px;
    transition: all 0.3s;
}
.search-input:focus { border-color: var(--primary-color); width: 300px; box-shadow: 0 0 8px var(--primary-glow); }

/* Checkboxes */
.checkbox-container {
  display: block;
  position: relative;
  padding-left: 28px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-color);
  user-select: none;
}
.checkbox-container input { position: absolute; opacity: 0; cursor: pointer; height: 0; width: 0; }
.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 18px;
  width: 18px;
  background-color: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  border-radius: 4px;
}
.checkbox-container:hover input ~ .checkmark { background-color: rgba(255,255,255,0.08); }
.checkbox-container input:checked ~ .checkmark { background-color: var(--primary-color); }
.checkmark:after { content: ""; position: absolute; display: none; }
.checkbox-container input:checked ~ .checkmark:after { display: block; }
.checkbox-container .checkmark:after {
  left: 6px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid #020306;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.row-mismatch { background: rgba(255, 62, 62, 0.04) !important; }
.row-mismatch td { border-bottom-color: rgba(255, 62, 62, 0.15) !important; }

/* Responsive Adjustments */
@media(max-width: 900px) {
    body { flex-direction: column; overflow-y: auto; }
    .admin-sidebar { width: 100%; height: auto; border-right: none; border-bottom: 1px solid var(--border-color); }
    .admin-content { padding: 15px; }
    .dashboard-details-row { grid-template-columns: 1fr; }
}

/* Global Select and Option Dropdown Colors Fix */
select, option {
    background-color: #0c0f17 !important;
    color: #f8fafc !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    outline: none;
}
select:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 8px var(--primary-glow) !important;
}

/* Force Modal Centering when shown via JS display='block' */
.modal-backdrop[style*="display: block"] {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}



/* Responsive Student Directory Cards Grid */
.student-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.student-card {
    background: var(--card-bg) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 18px !important;
    padding: 20px !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    min-height: 220px !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2) !important;
    transition: all 0.3s ease !important;
}

.student-card:hover {
    border-color: var(--primary-color) !important;
    box-shadow: 0 4px 20px var(--primary-glow) !important;
    transform: translateY(-2px) !important;
}

.student-card-main-info {
    display: flex !important;
    flex-direction: column !important;
    gap: 6px !important;
}

.student-card-name {
    font-size: 16px !important;
    font-weight: 700 !important;
    color: #fff !important;
}

.student-card-phone {
    font-size: 13px !important;
    color: var(--text-muted) !important;
}

.student-card-course {
    font-size: 13px !important;
    color: var(--text-muted) !important;
}

.student-card-details-row {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    margin-top: 15px !important;
    padding-top: 12px !important;
    border-top: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.receipt-badge {
    font-size: 11px !important;
    font-weight: 600 !important;
    padding: 4px 8px !important;
    border-radius: 6px !important;
    text-decoration: none !important;
}
.receipt-badge.none {
    background: rgba(255, 62, 62, 0.05) !important;
    border: 1px solid rgba(255, 62, 62, 0.15) !important;
    color: var(--error-color) !important;
}
.receipt-badge.view {
    background: rgba(0, 240, 255, 0.08) !important;
    border: 1px solid rgba(0, 240, 255, 0.15) !important;
    color: var(--accent-color) !important;
}
.receipt-badge.view:hover {
    background: var(--accent-color) !important;
    color: #020617 !important;
}

.student-card-footer {
    margin-top: auto !important;
    padding-top: 12px !important;
}

/* Assets Allotment Grid and Card */
.student-asset-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.student-asset-allot-card {
    background: var(--card-bg) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 18px !important;
    padding: 20px !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2) !important;
    transition: all 0.3s ease !important;
}

.student-asset-allot-card:hover {
    border-color: var(--primary-color) !important;
    box-shadow: 0 4px 20px var(--primary-glow) !important;
    transform: translateY(-2px) !important;
}

.allot-card-info h4 {
    font-size: 15px !important;
    font-weight: 700 !important;
    color: #fff !important;
    margin-bottom: 4px !important;
}

.allot-card-phone {
    font-size: 12.5px !important;
    color: var(--text-muted) !important;
}

.allot-card-status {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-end !important;
    gap: 8px !important;
}

.status-badge {
    font-size: 10px !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    padding: 2px 8px !important;
    border-radius: 6px !important;
}
.status-badge.granted {
    background: rgba(0, 255, 102, 0.1) !important;
    color: var(--success-color) !important;
}
.status-badge.locked {
    background: rgba(255, 62, 62, 0.1) !important;
    color: var(--error-color) !important;
}