/* ============================================================
   CSDex Save Your Seat (SYS) — Custom Styles
   White background, modern clean design
   ============================================================ */

/* ----- Import Google Fonts ----- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ----- CSS Variables ----- */
:root {
    --csdex-primary: #2563eb;
    --csdex-primary-dark: #1d4ed8;
    --csdex-primary-light: #3b82f6;
    --csdex-secondary: #475569;
    --csdex-success: #16a34a;
    --csdex-danger: #dc2626;
    --csdex-warning: #d97706;
    --csdex-info: #0891b2;
    --csdex-bg: #ffffff;
    --csdex-surface: #f8fafc;
    --csdex-border: #e2e8f0;
    --csdex-text: #1e293b;
    --csdex-text-muted: #64748b;
    --csdex-sidebar-width: 260px;
    --csdex-sidebar-collapsed: 72px;
    --csdex-navbar-height: 60px;
    --csdex-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --csdex-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --csdex-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --csdex-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --csdex-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --csdex-radius: 8px;
    --csdex-radius-lg: 12px;
}

/* ----- Base ----- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--csdex-bg) !important;
    color: var(--csdex-text);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ----- Scrollbar ----- */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--csdex-surface);
}
::-webkit-scrollbar-thumb {
    background: var(--csdex-border);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--csdex-text-muted);
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--csdex-bg);
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--csdex-bg);
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius-lg);
    box-shadow: var(--csdex-shadow-lg);
    padding: 40px;
    animation: fadeInUp 0.5s ease-out;
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--csdex-primary);
    margin: 0;
    letter-spacing: -0.5px;
}

.login-logo p {
    color: var(--csdex-text-muted);
    margin: 4px 0 0;
    font-size: 13px;
    font-weight: 400;
}

/* ============================================================
   ADMIN NAVBAR
   ============================================================ */
.csdex-navbar {
    height: var(--csdex-navbar-height);
    background: var(--csdex-bg);
    border-bottom: 1px solid var(--csdex-border);
    box-shadow: var(--csdex-shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
}

.csdex-navbar .navbar-brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--csdex-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.csdex-navbar .navbar-brand i {
    font-size: 22px;
}

.csdex-navbar .navbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.csdex-navbar .btn-toggle-sidebar {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--csdex-text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--csdex-radius);
    transition: var(--csdex-transition);
}

.csdex-navbar .btn-toggle-sidebar:hover {
    background: var(--csdex-surface);
    color: var(--csdex-text);
}

.admin-name {
    font-size: 13px;
    color: var(--csdex-text-muted);
    font-weight: 500;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.csdex-sidebar {
    width: var(--csdex-sidebar-width);
    height: calc(100vh - var(--csdex-navbar-height));
    position: fixed;
    top: var(--csdex-navbar-height);
    left: 0;
    background: var(--csdex-bg);
    border-right: 1px solid var(--csdex-border);
    overflow-y: auto;
    overflow-x: hidden;
    transition: var(--csdex-transition);
    z-index: 1020;
    padding: 12px 0;
}

.csdex-sidebar.collapsed {
    width: var(--csdex-sidebar-collapsed);
}

.csdex-sidebar .nav-section {
    padding: 0 12px;
    margin-bottom: 8px;
}

.csdex-sidebar .nav-section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--csdex-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 12px;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    transition: var(--csdex-transition);
}

.csdex-sidebar.collapsed .nav-section-title {
    opacity: 0;
    height: 0;
    padding: 0;
    margin: 0;
}

.csdex-sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin: 2px 0;
    color: var(--csdex-text);
    text-decoration: none;
    border-radius: var(--csdex-radius);
    transition: var(--csdex-transition);
    font-size: 13.5px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
}

.csdex-sidebar .nav-link i {
    font-size: 18px;
    min-width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.csdex-sidebar .nav-link:hover {
    background: var(--csdex-surface);
    color: var(--csdex-primary);
}

.csdex-sidebar .nav-link.active {
    background: #eff6ff;
    color: var(--csdex-primary);
    font-weight: 600;
}

.csdex-sidebar .nav-link span {
    transition: var(--csdex-transition);
}

.csdex-sidebar.collapsed .nav-link span {
    opacity: 0;
    width: 0;
}

.csdex-sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 10px;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.csdex-main {
    margin-left: var(--csdex-sidebar-width);
    margin-top: var(--csdex-navbar-height);
    padding: 24px;
    min-height: calc(100vh - var(--csdex-navbar-height));
    transition: var(--csdex-transition);
    background: var(--csdex-bg);
}

.csdex-main.expanded {
    margin-left: var(--csdex-sidebar-collapsed);
}

/* ----- Page Header ----- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--csdex-text);
    margin: 0;
}

.page-header p {
    color: var(--csdex-text-muted);
    font-size: 13px;
    margin: 2px 0 0;
}

/* ============================================================
   CARDS
   ============================================================ */
.csdex-card {
    background: var(--csdex-bg);
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius-lg);
    box-shadow: var(--csdex-shadow-sm);
    padding: 24px;
    transition: var(--csdex-transition);
}

.csdex-card:hover {
    box-shadow: var(--csdex-shadow);
}

/* Summary / stat cards */
.stat-card {
    text-align: center;
    padding: 24px 16px;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 12px;
}

.stat-card .stat-icon.primary { background: #eff6ff; color: var(--csdex-primary); }
.stat-card .stat-icon.success { background: #f0fdf4; color: var(--csdex-success); }
.stat-card .stat-icon.warning { background: #fffbeb; color: var(--csdex-warning); }
.stat-card .stat-icon.danger  { background: #fef2f2; color: var(--csdex-danger); }
.stat-card .stat-icon.info    { background: #ecfeff; color: var(--csdex-info); }

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--csdex-text);
    margin: 0;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--csdex-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-top: 4px;
}

/* ============================================================
   TABLES
   ============================================================ */
.csdex-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius-lg);
}

.csdex-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

.csdex-table thead th {
    background: var(--csdex-surface);
    color: var(--csdex-text-muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--csdex-border);
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 1;
}

.csdex-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--csdex-border);
    color: var(--csdex-text);
    vertical-align: middle;
}

.csdex-table tbody tr:hover {
    background: #f8fafc;
}

.csdex-table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================================
   BADGES / STATUS
   ============================================================ */
.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.2px;
}

.badge-pending    { background: #fef3c7; color: #92400e; }
.badge-approved   { background: #d1fae5; color: #065f46; }
.badge-disapproved{ background: #fee2e2; color: #991b1b; }
.badge-expired    { background: #fef2f2; color: #dc2626; border: 1px solid #f87171; font-weight: 700; }
.badge-active     { background: #d1fae5; color: #065f46; }
.badge-inactive   { background: #f1f5f9; color: #64748b; }
.badge-pro        { background: #eff6ff; color: #1d4ed8; }
.badge-subpro     { background: #fef3c7; color: #92400e; }

/* Camera Viewport (700x900 ratio) */
.camera-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.camera-box {
    width: 350px;
    height: 450px;
    max-width: 100%;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: #0f172a;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
.camera-box video, .camera-box canvas, .camera-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.camera-face-guide {
    position: absolute;
    top: 15%;
    left: 15%;
    width: 70%;
    height: 60%;
    border: 2px dashed rgba(255, 255, 255, 0.6);
    border-radius: 50% 50% 45% 45% / 45% 45% 55% 55%;
    pointer-events: none;
}


/* ============================================================
   BUTTONS
   ============================================================ */
.btn-csdex {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--csdex-radius);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--csdex-transition);
    text-decoration: none;
}

.btn-csdex:hover {
    transform: translateY(-1px);
    box-shadow: var(--csdex-shadow);
}

.btn-csdex:active {
    transform: translateY(0);
}

.btn-csdex-primary {
    background: var(--csdex-primary);
    color: #fff;
    border-color: var(--csdex-primary);
}
.btn-csdex-primary:hover {
    background: var(--csdex-primary-dark);
    color: #fff;
}

.btn-csdex-outline {
    background: transparent;
    color: var(--csdex-text);
    border-color: var(--csdex-border);
}
.btn-csdex-outline:hover {
    background: var(--csdex-surface);
    border-color: var(--csdex-primary-light);
    color: var(--csdex-primary);
}

.btn-csdex-success {
    background: var(--csdex-success);
    color: #fff;
}
.btn-csdex-success:hover {
    background: #15803d;
    color: #fff;
}

.btn-csdex-danger {
    background: var(--csdex-danger);
    color: #fff;
}
.btn-csdex-danger:hover {
    background: #b91c1c;
    color: #fff;
}

.btn-csdex-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--csdex-radius);
    border: 1px solid var(--csdex-border);
    background: var(--csdex-bg);
    color: var(--csdex-text-muted);
    cursor: pointer;
    transition: var(--csdex-transition);
    font-size: 15px;
}

.btn-icon:hover {
    background: var(--csdex-surface);
    color: var(--csdex-primary);
    border-color: var(--csdex-primary-light);
}

.btn-icon.danger:hover {
    color: var(--csdex-danger);
    border-color: var(--csdex-danger);
    background: #fef2f2;
}

.btn-icon.success:hover {
    color: var(--csdex-success);
    border-color: var(--csdex-success);
    background: #f0fdf4;
}

/* ============================================================
   FORMS
   ============================================================ */
.form-label-csdex {
    font-size: 13px;
    font-weight: 500;
    color: var(--csdex-text);
    margin-bottom: 4px;
}

.form-control-csdex {
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius);
    padding: 9px 12px;
    font-size: 13.5px;
    color: var(--csdex-text);
    background: var(--csdex-bg);
    transition: var(--csdex-transition);
    font-family: inherit;
    width: 100%;
}

.form-control-csdex:focus {
    outline: none;
    border-color: var(--csdex-primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control-csdex::placeholder {
    color: #94a3b8;
}

.form-select-csdex {
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius);
    padding: 9px 12px;
    font-size: 13.5px;
    color: var(--csdex-text);
    background: var(--csdex-bg);
    transition: var(--csdex-transition);
    font-family: inherit;
    width: 100%;
    cursor: pointer;
}

.form-select-csdex:focus {
    outline: none;
    border-color: var(--csdex-primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ============================================================
   MODALS
   ============================================================ */
.modal-content {
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius-lg);
    box-shadow: var(--csdex-shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--csdex-border);
    padding: 16px 24px;
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    border-top: 1px solid var(--csdex-border);
    padding: 16px 24px;
}

/* ============================================================
   PUBLIC PAGES
   ============================================================ */
.public-wrapper {
    background: var(--csdex-bg);
    min-height: 100vh;
}

.public-header {
    background: var(--csdex-bg);
    border-bottom: 1px solid var(--csdex-border);
    padding: 16px 0;
    box-shadow: var(--csdex-shadow-sm);
}

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

.public-header .brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--csdex-primary);
    text-decoration: none;
}

.public-content {
    padding: 32px 0;
}

/* Schedule cards for public view */
.schedule-card {
    border: 1px solid var(--csdex-border);
    border-radius: var(--csdex-radius-lg);
    padding: 24px;
    margin-bottom: 16px;
    transition: var(--csdex-transition);
    background: var(--csdex-bg);
}

.schedule-card:hover {
    border-color: var(--csdex-primary-light);
    box-shadow: var(--csdex-shadow-md);
}

.schedule-card .exam-date {
    font-size: 18px;
    font-weight: 700;
    color: var(--csdex-text);
}

.schedule-card .exam-meta {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.schedule-card .exam-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--csdex-text-muted);
}

.schedule-card .slots-info {
    margin-top: 12px;
}

.slots-bar {
    height: 6px;
    background: var(--csdex-border);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 6px;
}

.slots-bar .slots-fill {
    height: 100%;
    background: var(--csdex-primary);
    border-radius: 3px;
    transition: width 0.6s ease;
}

.slots-bar .slots-fill.warning {
    background: var(--csdex-warning);
}

.slots-bar .slots-fill.danger {
    background: var(--csdex-danger);
}

/* ============================================================
   EMPTY STATES
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--csdex-text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--csdex-text);
    margin: 0 0 8px;
}

.empty-state p {
    font-size: 13px;
    margin: 0;
}

/* ============================================================
   LOADING
   ============================================================ */
.loading-spinner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--csdex-text-muted);
    font-size: 13px;
}

.loading-spinner .spinner-border {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.4s ease-out;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991.98px) {
    .csdex-sidebar {
        transform: translateX(-100%);
    }
    .csdex-sidebar.show {
        transform: translateX(0);
        box-shadow: var(--csdex-shadow-lg);
    }
    .csdex-main {
        margin-left: 0 !important;
    }
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: var(--csdex-navbar-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.3);
        z-index: 1015;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

@media (max-width: 575.98px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .csdex-card {
        padding: 16px;
    }
    .login-card {
        padding: 24px;
    }
    .schedule-card .exam-meta {
        flex-direction: column;
        gap: 4px;
    }
}

/* ============================================================
   UTILITY
   ============================================================ */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }

.cursor-pointer { cursor: pointer; }