/* ==========================================================================
   My University - Custom Admin Dashboard CSS
   Inspired by Brand Identity (public/images/system/logo.png)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&family=Alexandria:wght@400;500;600;700&display=swap');

:root {
    /* Brand Primary Palette (Deep Navy Blue from Logo Base) */
    --univ-primary: #0F2942;
    --univ-primary-dark: #091E36;
    --univ-primary-light: #1E3B5F;
    --univ-primary-hover: #163657;

    /* Brand Secondary Accent (Electric Cyan / Turquoise from Logo Circuit) */
    --univ-cyan: #00B4D8;
    --univ-cyan-dark: #0096B7;
    --univ-cyan-light: #E0F2FE;
    --univ-cyan-glow: rgba(0, 180, 216, 0.25);

    /* Gradients */
    --univ-gradient-primary: linear-gradient(135deg, #0F2942 0%, #00B4D8 100%);
    --univ-gradient-subtle: linear-gradient(135deg, rgba(15, 41, 66, 0.04) 0%, rgba(0, 180, 216, 0.08) 100%);
    --univ-gradient-card: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    --univ-gradient-cyan-btn: linear-gradient(135deg, #00B4D8 0%, #0077B6 100%);

    /* Functional Colors */
    --univ-success: #10B981;
    --univ-success-bg: #ECFDF5;
    --univ-warning: #F59E0B;
    --univ-warning-bg: #FFFBEB;
    --univ-danger: #EF4444;
    --univ-danger-bg: #FEF2F2;
    --univ-info: #3B82F6;
    --univ-info-bg: #EFF6FF;

    /* Neutral Colors */
    --univ-body-bg: #F1F5F9;
    --univ-card-bg: #FFFFFF;
    --univ-text-heading: #0F172A;
    --univ-text-body: #334155;
    --univ-text-muted: #64748B;
    --univ-border: #E2E8F0;
    --univ-border-light: #F1F5F9;

    /* Spacing & Shadows */
    --univ-sidebar-width: 280px;
    --univ-sidebar-collapsed: 80px;
    --univ-navbar-height: 72px;
    --univ-radius-lg: 16px;
    --univ-radius-md: 12px;
    --univ-radius-sm: 8px;
    --univ-shadow-sm: 0 2px 4px rgba(15, 41, 66, 0.04);
    --univ-shadow-md: 0 8px 24px -4px rgba(15, 41, 66, 0.08);
    --univ-shadow-lg: 0 16px 32px -6px rgba(15, 41, 66, 0.12);
    --univ-shadow-cyan: 0 8px 20px rgba(0, 180, 216, 0.3);

    --univ-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset & Body */
body {
    font-family: 'Cairo', 'Alexandria', system-ui, -apple-system, sans-serif;
    background-color: var(--univ-body-bg);
    color: var(--univ-text-body);
    direction: rtl;
    text-align: right;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Alexandria', 'Cairo', sans-serif;
    color: var(--univ-text-heading);
    font-weight: 700;
}

/* Layout Wrapper */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* --------------------------------------------------------------------------
   Sidebar Styling
   -------------------------------------------------------------------------- */
.sidebar {
    width: var(--univ-sidebar-width);
    background: var(--univ-primary-dark);
    background-image: radial-gradient(circle at 10% 20%, rgba(0, 180, 216, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(15, 41, 66, 0.6) 0%, transparent 50%);
    color: #FFFFFF;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: var(--univ-transition);
    box-shadow: -4px 0 25px rgba(0, 0, 0, 0.15);
    border-left: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-header {
    height: var(--univ-navbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    gap: 0.85rem;
}

.brand-logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 180, 216, 0.4));
    transition: var(--univ-transition);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1.2;
    letter-spacing: -0.3px;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem 0.85rem;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link-custom {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.75);
    border-radius: var(--univ-radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    gap: 0.85rem;
    transition: var(--univ-transition);
    position: relative;
}

.nav-link-custom i {
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--univ-transition);
}

.nav-link-custom:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(-4px);
}

.nav-link-custom:hover i {
    color: var(--univ-cyan);
}

.nav-link-custom.active {
    color: #FFFFFF;
    background: var(--univ-gradient-primary);
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
    border-right: 4px solid var(--univ-cyan);
}

.nav-link-custom.active i {
    color: var(--univ-cyan);
}

.badge-nav {
    margin-right: auto;
    font-size: 0.7rem;
    padding: 0.25em 0.65em;
    border-radius: 50rem;
    font-weight: 700;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--univ-cyan);
    object-fit: cover;
}

/* --------------------------------------------------------------------------
   Main Content Layout
   -------------------------------------------------------------------------- */
.main-wrapper {
    margin-right: var(--univ-sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: var(--univ-transition);
}

/* Navbar Top Header */
.top-navbar {
    height: var(--univ-navbar-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--univ-border);
    position: sticky;
    top: 0;
    z-index: 1030;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--univ-shadow-sm);
}

.toggle-sidebar-btn {
    background: var(--univ-body-bg);
    border: 1px solid var(--univ-border);
    color: var(--univ-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--univ-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--univ-transition);
}

.toggle-sidebar-btn:hover {
    background: var(--univ-cyan-light);
    color: var(--univ-cyan-dark);
    border-color: var(--univ-cyan);
}

.global-search-container {
    position: relative;
    width: 320px;
}

.global-search-input {
    background: var(--univ-body-bg);
    border: 1px solid var(--univ-border);
    border-radius: 50rem;
    padding: 0.55rem 2.6rem 0.55rem 1.25rem;
    font-size: 0.88rem;
    width: 100%;
    transition: var(--univ-transition);
    color: var(--univ-text-heading);
}

.global-search-input:focus {
    outline: none;
    background: #FFFFFF;
    border-color: var(--univ-cyan);
    box-shadow: 0 0 0 4px var(--univ-cyan-glow);
}

.global-search-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--univ-text-muted);
    font-size: 0.92rem;
    pointer-events: none;
}

.top-navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.action-icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--univ-body-bg);
    border: 1px solid var(--univ-border);
    color: var(--univ-text-body);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: var(--univ-transition);
    text-decoration: none;
}

.action-icon-btn:hover {
    background: var(--univ-cyan-light);
    color: var(--univ-cyan-dark);
    border-color: var(--univ-cyan);
    transform: translateY(-2px);
}

.icon-badge {
    position: absolute;
    top: -2px;
    left: -2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--univ-danger);
    color: #FFFFFF;
    font-size: 0.65rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #FFFFFF;
}

/* Page Content Body */
.dashboard-body {
    padding: 1.75rem 1.75rem 3rem 1.75rem;
    flex: 1;
}

/* Page Welcome Header Banner */
.welcome-banner {
    background: var(--univ-gradient-primary);
    border-radius: var(--univ-radius-lg);
    padding: 2rem 2.25rem;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
    box-shadow: var(--univ-shadow-md);
    margin-bottom: 2rem;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.welcome-banner::after {
    content: '';
    position: absolute;
    bottom: -40%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.welcome-banner-title {
    font-size: 1.65rem;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 0.5rem;
}

.welcome-banner-subtitle {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.btn-cyan-action {
    background: var(--univ-cyan);
    color: #FFFFFF;
    font-weight: 700;
    padding: 0.6rem 1.35rem;
    border-radius: 50rem;
    border: none;
    box-shadow: var(--univ-shadow-cyan);
    transition: var(--univ-transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-cyan-action:hover {
    background: #0096B7;
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 180, 216, 0.4);
}

/* --------------------------------------------------------------------------
   Metric Cards (KPIs)
   -------------------------------------------------------------------------- */
.kpi-card {
    background: var(--univ-card-bg);
    border: 1px solid var(--univ-border);
    border-radius: var(--univ-radius-lg);
    padding: 1.35rem 1.5rem;
    box-shadow: var(--univ-shadow-sm);
    transition: var(--univ-transition);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--univ-shadow-md);
    border-color: var(--univ-cyan);
}

.kpi-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.kpi-icon-wrapper {
    width: 52px;
    height: 52px;
    border-radius: var(--univ-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    transition: var(--univ-transition);
}

.kpi-icon-primary {
    background: rgba(15, 41, 66, 0.08);
    color: var(--univ-primary);
}

.kpi-icon-cyan {
    background: var(--univ-cyan-light);
    color: var(--univ-cyan-dark);
}

.kpi-icon-success {
    background: var(--univ-success-bg);
    color: var(--univ-success);
}

.kpi-icon-warning {
    background: var(--univ-warning-bg);
    color: var(--univ-warning);
}

.kpi-value {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--univ-text-heading);
    line-height: 1.1;
    margin-bottom: 0.25rem;
    font-family: 'Alexandria', sans-serif;
}

.kpi-label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--univ-text-muted);
}

.kpi-trend {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 50rem;
}

.trend-up {
    background: var(--univ-success-bg);
    color: var(--univ-success);
}

.trend-down {
    background: var(--univ-danger-bg);
    color: var(--univ-danger);
}

/* --------------------------------------------------------------------------
   Chart Cards & Containers
   -------------------------------------------------------------------------- */
.chart-card {
    background: var(--univ-card-bg);
    border: 1px solid var(--univ-border);
    border-radius: var(--univ-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--univ-shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-header-custom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--univ-border-light);
}

.card-title-custom {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--univ-text-heading);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0;
}

.card-title-custom i {
    color: var(--univ-cyan);
}

.chart-wrapper {
    position: relative;
    flex: 1;
    min-height: 280px;
    width: 100%;
}

/* --------------------------------------------------------------------------
   Tables & Data Presentation
   -------------------------------------------------------------------------- */
.table-card {
    background: var(--univ-card-bg);
    border: 1px solid var(--univ-border);
    border-radius: var(--univ-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--univ-shadow-sm);
}

.custom-table {
    width: 100%;
    margin-bottom: 0;
    vertical-align: middle;
}

.custom-table th {
    background: var(--univ-body-bg);
    color: var(--univ-text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    padding: 0.85rem 1rem;
    border-bottom: 2px solid var(--univ-border);
    white-space: nowrap;
}

.custom-table td {
    padding: 1rem;
    color: var(--univ-text-body);
    font-size: 0.9rem;
    font-weight: 500;
    border-bottom: 1px solid var(--univ-border-light);
}

.custom-table tbody tr {
    transition: var(--univ-transition);
}

.custom-table tbody tr:hover {
    background: rgba(0, 180, 216, 0.03);
}

/* Status Badges */
.status-badge {
    padding: 0.35em 0.8em;
    border-radius: 50rem;
    font-size: 0.78rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.status-approved {
    background: var(--univ-success-bg);
    color: var(--univ-success);
}

.status-pending {
    background: var(--univ-warning-bg);
    color: var(--univ-warning);
}

.status-rejected {
    background: var(--univ-danger-bg);
    color: var(--univ-danger);
}

/* Student Avatar in Table */
.student-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.student-img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--univ-border);
}

.student-name {
    font-weight: 700;
    color: var(--univ-text-heading);
    display: block;
    line-height: 1.2;
}

.student-id {
    font-size: 0.75rem;
    color: var(--univ-text-muted);
}

/* Schedule & Event Cards */
.schedule-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem;
    border-radius: var(--univ-radius-md);
    background: var(--univ-body-bg);
    margin-bottom: 0.75rem;
    border-right: 4px solid var(--univ-cyan);
    transition: var(--univ-transition);
}

.schedule-item:hover {
    background: #FFFFFF;
    box-shadow: var(--univ-shadow-sm);
    transform: translateX(-3px);
}

.schedule-time {
    background: var(--univ-primary);
    color: #FFFFFF;
    padding: 0.5rem 0.75rem;
    border-radius: var(--univ-radius-sm);
    font-size: 0.78rem;
    font-weight: 700;
    text-align: center;
    min-width: 70px;
}

/* --------------------------------------------------------------------------
   Responsive Design & Breakpoints
   -------------------------------------------------------------------------- */

/* Desktop Collapsed Mini-Sidebar Mode (>= 992px) */
@media (min-width: 992px) {
    body.sidebar-collapsed .sidebar {
        width: var(--univ-sidebar-collapsed);
    }

    body.sidebar-collapsed .main-wrapper {
        margin-right: var(--univ-sidebar-collapsed);
    }

    body.sidebar-collapsed .sidebar-header {
        justify-content: center;
        padding: 0 0.5rem;
    }

    body.sidebar-collapsed .brand-text,
    body.sidebar-collapsed .nav-link-custom span,
    body.sidebar-collapsed .badge-nav {
        display: none !important;
        opacity: 0;
    }

    body.sidebar-collapsed .nav-link-custom {
        justify-content: center;
        padding: 0.85rem 0;
        gap: 0;
    }

    body.sidebar-collapsed .nav-link-custom i {
        font-size: 1.35rem;
        margin: 0;
    }

    body.sidebar-collapsed .user-avatar {
        margin: 0;
    }

    /* Fully Hidden Sidebar Mode */
    body.sidebar-hidden .sidebar {
        transform: translateX(100%);
        right: -280px;
    }

    body.sidebar-hidden .main-wrapper {
        margin-right: 0;
    }
}

@media (max-width: 991.98px) {
    .sidebar {
        right: -100%;
        box-shadow: none;
    }

    .sidebar.show {
        right: 0;
        box-shadow: 0 0 40px rgba(0, 0, 0, 0.4);
    }

    .main-wrapper {
        margin-right: 0;
    }

    .global-search-container {
        width: 200px;
    }
}

@media (max-width: 767.98px) {
    .dashboard-body {
        padding: 1rem;
    }

    .welcome-banner {
        padding: 1.5rem;
    }

    .welcome-banner-title {
        font-size: 1.35rem;
    }

    .global-search-container {
        display: none;
    }

    .kpi-value {
        font-size: 1.5rem;
    }
}

/* Backdrop for Mobile Sidebar */
.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(9, 30, 54, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1035;
    opacity: 0;
    visibility: hidden;
    transition: var(--univ-transition);
}

.sidebar-backdrop.show {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   Professional Responsive Pagination Component
   ========================================================================== */
.custom-pagination-container {
    width: 100%;
}

.custom-pagination-card {
    background: #FFFFFF;
    border: 1px solid var(--univ-border) !important;
    border-radius: var(--univ-radius-lg) !important;
    box-shadow: var(--univ-shadow-sm) !important;
    transition: var(--univ-transition);
}

.custom-pagination-card:hover {
    box-shadow: var(--univ-shadow-md) !important;
    border-color: rgba(0, 180, 216, 0.3) !important;
}

.pagination-info-badge {
    background-color: #F8FAFC !important;
    border-color: var(--univ-border) !important;
    font-size: 0.85rem;
    color: var(--univ-text-muted) !important;
    font-weight: 500;
}

.pagination-custom {
    display: flex;
    padding-right: 0;
    list-style: none;
    user-select: none;
}

.pagination-custom .page-item {
    margin: 0 2px;
}

.pagination-custom .page-link-custom {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--univ-text-body);
    background-color: #F8FAFC;
    border: 1px solid var(--univ-border);
    border-radius: var(--univ-radius-md) !important;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
}

.pagination-custom .page-link-custom:hover {
    color: var(--univ-cyan-dark);
    background-color: #E0F2FE;
    border-color: var(--univ-cyan);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--univ-cyan-glow);
}

.pagination-custom .page-item.active .page-link-custom,
.pagination-custom .page-link-custom.active-link {
    color: #FFFFFF !important;
    background: var(--univ-gradient-primary) !important;
    border-color: transparent !important;
    box-shadow: 0 4px 14px rgba(15, 41, 66, 0.25) !important;
    font-weight: 700;
    transform: scale(1.05);
}

.pagination-custom .prev-next-btn {
    padding: 0 16px;
    font-weight: 600;
    background-color: #FFFFFF;
}

.pagination-custom .prev-next-btn:hover {
    background: var(--univ-gradient-cyan-btn) !important;
    color: #FFFFFF !important;
    border-color: transparent !important;
    box-shadow: 0 4px 14px var(--univ-cyan-glow) !important;
}

.pagination-custom .page-item.disabled .page-link-custom,
.pagination-custom .page-link-custom.disabled {
    color: #94A3B8 !important;
    background-color: #F1F5F9 !important;
    border-color: var(--univ-border) !important;
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
    transform: none !important;
    box-shadow: none !important;
}

.pagination-custom .page-link-dots {
    background-color: transparent !important;
    border-color: transparent !important;
    color: var(--univ-text-muted);
    font-weight: 700;
    min-width: 32px;
}

/* Mobile & Touch Responsiveness */
@media (max-width: 575.98px) {
    .custom-pagination-card {
        padding: 0.75rem !important;
        border-radius: var(--univ-radius-md) !important;
    }
    
    .pagination-info-badge {
        font-size: 0.78rem;
        width: 100%;
        text-align: center;
        justify-content: center;
        padding: 0.5rem 0.75rem !important;
    }

    .pagination-custom {
        width: 100%;
        justify-content: center !important;
    }

    .pagination-custom .page-link-custom {
        min-width: 34px;
        height: 34px;
        font-size: 0.8rem;
        padding: 0 8px;
        border-radius: var(--univ-radius-sm) !important;
    }

    .pagination-custom .prev-next-btn {
        padding: 0 10px;
    }
}