/* ============================================================
   ScholarRescue - Academic Support Platform
   Global Styles & Theme
   ============================================================ */

:root {
    --primary: #1B365D;
    --primary-dark: #132844;
    --secondary: #2E5A88;
    --accent: #F5A623;
    --accent-light: #FFD180;
    --bg-main: #F7F9FC;
    --bg-card: #FFFFFF;
    --bg-sidebar: #1B365D;
    --success: #28A745;
    --danger: #DC3545;
    --warning: #FFC107;
    --info: #17A2B8;
    --text-dark: #2C3E50;
    --text-muted: #6C757D;
    --text-light: #FFFFFF;
    --border-color: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.25s ease;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary);
    font-weight: 600;
}

/* ── Links ── */
a {
    color: var(--secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    margin-bottom: 1.25rem;
}

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

.card-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--primary);
}

/* ── Dashboard Stat Cards ── */
.stat-card {
    border-left: 4px solid var(--primary);
    transition: var(--transition);
    border-radius: var(--radius-md);
    background: var(--bg-card);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

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

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

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

.stat-card .stat-icon {
    font-size: 2.5rem;
    opacity: 0.2;
}

.stat-card .stat-value {
    font-size: 2.5rem;
    font-weight: 700;
}

.stat-card .stat-label {
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-trend {
    font-size: 0.85rem;
    font-weight: 500;
}

.stat-trend.up {
    color: var(--success);
}

.stat-trend.down {
    color: var(--danger);
}

/* Card Headers - Unified Color */
.card-header-unified {
    background: var(--primary);
    color: var(--text-light);
    border: none;
    padding: 1rem 1.25rem;
}

.card-header-unified.success {
    background: linear-gradient(135deg, var(--success), #2E8B57);
}

/* Table Improvements */
.table-zebra tbody tr:nth-child(odd) {
    background-color: rgba(27, 54, 93, 0.02);
}

.table-zebra tbody tr:nth-child(even) {
    background-color: rgba(27, 54, 93, 0.01);
}

.table-zebra tbody tr:hover {
    background-color: rgba(46, 90, 136, 0.08);
}

.sticky-header th {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--primary);
    color: var(--text-light);
}

/* Quick Action Buttons */
.quick-action-btn {
    border-radius: var(--radius-md);
    padding: 1.25rem 0.75rem;
    text-align: center;
    transition: all 0.2s;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    height: 100%;
}

.quick-action-btn:hover {
    border-color: var(--primary);
    box-shadow: 0 6px 16px rgba(27, 54, 93, 0.15);
    transform: translateY(-3px);
}

.quick-action-btn .action-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Section Titles */
.section-title {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title i {
    font-size: 1.15rem;
}

/* Empty States */
.empty-state {
    padding: 2.5rem 1rem;
    text-align: center;
}

.empty-state-icon {
    font-size: 3.5rem;
    color: #CBD5E0;
    margin-bottom: 1rem;
}

.empty-state-compact {
    padding: 1.5rem;
    text-align: center;
}

/* Dashboard Section Spacing */
.dashboard-section {
    margin-bottom: 2.5rem;
}

/* New Order Button - Prominent */
.btn-new-order {
    background: var(--accent);
    border: none;
    color: var(--primary-dark);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.btn-new-order:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 166, 35, 0.3);
}

/* ── Buttons ── */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1.25rem;
}

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

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

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

.btn-accent {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--primary);
}

.btn-accent:hover {
    background-color: var(--accent-light);
    border-color: var(--accent-light);
    color: var(--primary-dark);
}

/* ── Tables ── */
.table {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table thead th {
    background-color: var(--primary);
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: rgba(27, 54, 93, 0.02);
}

.table-hover > tbody > tr:hover > * {
    background-color: rgba(46, 90, 136, 0.08);
}

/* ── Navigation / Sidebar ── */
.sidebar {
    background: var(--bg-sidebar);
    min-height: calc(100vh - 56px);
    padding-top: 1rem;
    transition: var(--transition);
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.75);
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-sm);
    margin: 2px 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar .nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.sidebar .nav-link.active {
    background: var(--accent);
    color: var(--primary-dark);
    font-weight: 600;
}

.sidebar .nav-link i {
    width: 20px;
    text-align: center;
}

.sidebar-heading {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    color: rgba(255,255,255,0.4);
    padding: 1rem 1.25rem 0.5rem;
    font-weight: 600;
}

/* ── Navbar ── */
.navbar {
    background: var(--bg-card) !important;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 0.5rem 0;
}

.navbar-brand {
    color: var(--primary) !important;
    font-weight: 700;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand .brand-icon {
    color: var(--accent);
    font-size: 1.5rem;
}

/* ── Badges ── */
.badge {
    font-weight: 500;
    letter-spacing: 0.3px;
}

.badge-success {
    background-color: var(--success);
}

.badge-danger {
    background-color: var(--danger);
}

.badge-warning {
    background-color: var(--warning);
    color: var(--text-dark);
}

.badge-info {
    background-color: var(--info);
}

.badge-primary {
    background-color: var(--primary);
}

/* ── Alerts ── */
.alert {
    border-radius: var(--radius-md);
    border: none;
    font-weight: 500;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.12);
    color: #155724;
    border-left: 4px solid var(--success);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.12);
    color: #721c24;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.12);
    color: #856404;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.12);
    color: #0c5460;
    border-left: 4px solid var(--info);
}

/* ── Forms ── */
.form-control, .form-select {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(46, 90, 136, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.9rem;
}

/* ── Breadcrumb ── */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item a {
    color: var(--secondary);
    font-size: 0.9rem;
}

.breadcrumb-item.active {
    color: var(--text-muted);
}

/* ── Modal ── */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
}

/* ── Pagination ── */
.page-link {
    color: var(--secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm) !important;
    margin: 0 2px;
}

.page-item.active .page-link {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* ── Tabs ── */
.nav-tabs .nav-link {
    color: var(--text-muted);
    border: none;
    border-bottom: 2px solid transparent;
    font-weight: 500;
    transition: var(--transition);
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    border-bottom-color: var(--secondary);
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--accent);
    font-weight: 600;
}

/* ── Sticky Footer ── */
header {
    flex-shrink: 0;
}

main {
    flex: 1;
}

.footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.6);
    padding: 1rem 0;
    font-size: 0.85rem;
    margin-top: auto;
}

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

/* ── Utilities ── */
.text-primary-custom {
    color: var(--primary) !important;
}

.text-accent {
    color: var(--accent) !important;
}

.bg-primary-custom {
    background-color: var(--primary) !important;
}

.border-accent {
    border-color: var(--accent) !important;
}

.shadow-custom {
    box-shadow: var(--shadow-md);
}

/* ── Loading Spinner ── */
.spinner-grow {
    color: var(--accent);
}

/* ── App Layout (Authenticated) ── */
.app-wrapper {
    display: flex;
    min-height: calc(100vh - 56px);
}

.app-topbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.app-sidebar {
    width: 250px;
    background: var(--bg-sidebar);
    min-height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    overflow-y: auto;
    transition: transform 0.3s ease;
    flex-direction: column;
}

.app-sidebar .sidebar-brand {
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.app-sidebar .sidebar-nav .nav-link {
    color: rgba(255,255,255,0.75);
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    margin: 2px 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.88rem;
    text-decoration: none;
}

.app-sidebar .sidebar-nav .nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.app-sidebar .sidebar-nav .nav-link.active {
    background: var(--accent);
    color: var(--primary-dark);
    font-weight: 600;
}

.app-sidebar .sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.app-content {
    flex: 1;
    margin-left: 250px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--bg-main);
}

.app-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}

.app-main {
    flex: 1;
}

.app-footer {
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 0;
    background: var(--bg-card);
    font-size: 0.8rem;
}

/* ── Responsive ──
   Must come after the base .app-content / .app-sidebar rules above: these
   share the same selector and specificity, so with equal specificity CSS
   lets the later rule in the file win regardless of the media query. When
   this block sat earlier in the file, the unconditional desktop rule
   ".app-content { margin-left: 250px }" always won, even on phones -- every
   authenticated page rendered with 250px eaten out of a ~380px viewport. */
@media (max-width: 991.98px) {
    .app-content {
        margin-left: 0;
    }

    .app-sidebar.mobile-open {
        transform: translateX(0);
        display: flex !important;
    }
}

@media (max-width: 768px) {
    .stat-card .stat-value {
        font-size: 1.25rem;
    }

    .sidebar {
        min-height: auto;
        padding-bottom: 1rem;
    }

    .table-responsive {
        font-size: 0.85rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .container-fluid {
        padding-left: 12px;
        padding-right: 12px;
    }

    .app-sidebar {
        width: 260px;
        transform: translateX(-100%);
    }
}

@media (max-width: 576px) {
    .stat-card .stat-icon {
        font-size: 1.5rem;
    }

    .stat-card .stat-value {
        font-size: 1rem;
    }

    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }

    .navbar-brand {
        font-size: 1rem;
    }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1035;
}

.sidebar-overlay.active {
    display: block;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

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

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

/* ── Notification dropdown ── */
.notif-dropdown {
    max-height: 400px;
    overflow-y: auto;
}

/* ── Print Styles ── */
@media print {
    .sidebar, .navbar, .footer {
        display: none !important;
    }

    .container-fluid {
        max-width: 100% !important;
    }
}