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

:root {
    --primary-color: #1e40af; /* Deep royal blue */
    --primary-hover: #1e3a8a;
    --primary-light: #eff6ff;
    --dark-blue: #0f172a; /* Slate 900 */
    --sidebar-width: 260px;
    --bg-light: #f8fafc; /* Slate 50 */
    --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --hover-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --text-main: #334155; /* Slate 700 */
    --text-muted: #64748b; /* Slate 500 */
    --border-color: #e2e8f0; /* Slate 200 */
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Sidebar Layout */
#sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background-color: var(--dark-blue);
    color: #fff;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

#sidebar .brand {
    padding: 1.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #fff;
    text-decoration: none;
}

#sidebar .brand i {
    color: #3b82f6;
}

#sidebar .nav-links {
    list-style: none;
    padding: 1.5rem 0;
    margin: 0;
    flex-grow: 1;
    overflow-y: auto;
}

#sidebar .nav-links li {
    margin-bottom: 0.25rem;
    padding: 0 0.75rem;
}

#sidebar .nav-links li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
}

#sidebar .nav-links li a:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.05);
}

#sidebar .nav-links li.active a {
    color: #fff;
    background-color: var(--primary-color);
}

#sidebar .user-info {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background-color: rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#sidebar .user-info img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: #38bdf8;
    display: flex;
    align-items: center;
    justify-content: center;
    object-fit: cover;
}

#sidebar .user-details {
    flex-grow: 1;
    overflow: hidden;
}

#sidebar .user-details .name {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #f1f5f9;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

#sidebar .user-details .role {
    display: block;
    font-size: 0.75rem;
    color: #64748b;
}

#sidebar .logout-btn {
    color: #ef4444;
    font-size: 1.1rem;
    transition: color 0.2s;
    text-decoration: none;
}

#sidebar .logout-btn:hover {
    color: #f87171;
}

/* Main Layout */
#main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

#top-nav {
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#top-nav .toggle-sidebar {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-main);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    transition: background-color 0.2s;
}

#top-nav .toggle-sidebar:hover {
    background-color: var(--bg-light);
}

.page-content {
    padding: 2rem;
    flex-grow: 1;
}

/* Dashboard Cards */
.kpi-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.25s ease;
    text-decoration: none;
    color: inherit;
}

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--hover-shadow);
    border-color: #cbd5e1;
}

.kpi-card .card-info h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0 0 0.25rem 0;
    color: var(--dark-blue);
    line-height: 1;
}

.kpi-card .card-info p {
    margin: 0;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.875rem;
}

.kpi-card .card-icon {
    width: 54px;
    height: 54px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.kpi-card.blue .card-icon {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.kpi-card.green .card-icon {
    background-color: #ecfdf5;
    color: #059669;
}

.kpi-card.purple .card-icon {
    background-color: #f5f3ff;
    color: #7c3aed;
}

.kpi-card.orange .card-icon {
    background-color: #fff7ed;
    color: #ea580c;
}

/* Panel cards */
.custom-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    overflow: hidden;
}

.custom-card-header {
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.custom-card-header h5 {
    margin: 0;
    font-weight: 600;
    color: var(--dark-blue);
}

/* Modern Tables */
.custom-table-container {
    overflow-x: auto;
}

.custom-table {
    width: 100%;
    margin: 0;
}

.custom-table th {
    background-color: #f8fafc;
    border-bottom: 2px solid var(--border-color);
    color: var(--dark-blue);
    font-weight: 600;
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
    white-space: nowrap;
}

.custom-table td {
    padding: 1rem 1.25rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

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

.custom-table tr:hover td {
    background-color: #f8fafc;
}

/* Status toggling badge classes */
.badge-active {
    background-color: #d1fae5;
    color: #065f46;
}

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

.btn-toggle-status {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    color: #94a3b8;
    transition: color 0.2s;
}

.btn-toggle-status:hover {
    color: var(--primary-color);
}

.btn-toggle-status.active {
    color: #10b981;
}

/* Custom form validation alerts */
.error-text {
    font-size: 0.75rem;
    color: #ef4444;
    margin-top: 0.25rem;
    display: block;
}

/* Login Page Styling */
.login-body {
    background-color: #0f172a;
    background-image: radial-gradient(at 0% 0%, rgb(30, 58, 138) 0, transparent 50%), radial-gradient(at 50% 0%, rgb(15, 23, 42) 0, transparent 50%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.3);
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    color: #fff;
}

.login-card .card-body {
    padding: 2.5rem;
}

.login-card .brand {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.login-card .brand i {
    color: #38bdf8;
}

.login-card .form-control {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
}

.login-card .form-control:focus {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: #38bdf8;
    box-shadow: 0 0 0 0.25rem rgba(56, 189, 248, 0.2);
}

.login-card .btn-primary {
    background-color: #38bdf8;
    border-color: #38bdf8;
    color: #0f172a;
    font-weight: 600;
}

.login-card .btn-primary:hover {
    background-color: #0ea5e9;
    border-color: #0ea5e9;
}

/* Table sorting headers indicator */
.sortable-header {
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-right: 1.5rem !important;
}

.sortable-header::after {
    content: '\f0dc';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 0.5rem;
    color: #cbd5e1;
    font-size: 0.75rem;
}

.sortable-header.asc::after {
    content: '\f0de';
    color: var(--primary-color);
}

.sortable-header.desc::after {
    content: '\f0dd';
    color: var(--primary-color);
}

/* Bulk Delete Bar styling */
.bulk-action-bar {
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from { transform: translateY(-10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Settings Form Specifics */
.settings-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-blue);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
}

/* Mobile responsive sidebar handling */
@media (max-width: 991.98px) {
    #sidebar {
        transform: translateX(-100%);
    }
    
    #sidebar.active {
        transform: translateX(0);
    }
    
    #main-content {
        margin-left: 0;
    }
    
    #main-content.active-sidebar {
        /* Optional overlay or offset */
    }
}

/* Print CSS */
@media print {
    #sidebar,
    #top-nav,
    .no-print,
    .btn,
    .btn-group,
    .pagination,
    .form-check-input[type="checkbox"],
    th:first-child, /* checkbox column */
    td:first-child, /* checkbox column */
    th:last-child,  /* action column */
    td:last-child,  /* action column */
    .search-filter-section,
    .custom-card-header .btn {
        display: none !important;
    }
    
    #main-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }
    
    .page-content {
        padding: 0 !important;
    }
    
    .custom-card {
        border: none !important;
        box-shadow: none !important;
        margin: 0 !important;
    }
    
    .custom-card-header {
        border-bottom: 2px solid #000 !important;
        padding: 1rem 0 !important;
    }
    
    .custom-card-header h5 {
        font-size: 1.5rem !important;
        font-weight: 700 !important;
        text-align: center;
        width: 100%;
        color: #000 !important;
    }
    
    .custom-table {
        border-collapse: collapse !important;
        width: 100% !important;
    }
    
    .custom-table th,
    .custom-table td {
        border: 1px solid #94a3b8 !important;
        color: #000 !important;
        padding: 0.5rem !important;
        font-size: 0.8rem !important;
    }
    
    .custom-table th {
        background-color: #f1f5f9 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}

/* Custom responsive table container */
.custom-table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
}
.custom-table-container::-webkit-scrollbar {
    height: 6px;
}
.custom-table-container::-webkit-scrollbar-track {
    background: transparent;
}
.custom-table-container::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 3px;
}
.custom-table-container::-webkit-scrollbar-thumb:hover {
    background-color: #94a3b8;
}

/* Sidebar mobile backdrop overlay */
.sidebar-mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.sidebar-mobile-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Mobile responsive layout tweaks */
@media (max-width: 991.98px) {
    #sidebar {
        z-index: 1010 !important;
    }
}

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

@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem;
        margin: 1rem;
    }
}

/* School Dropdown responsive limits */
#schoolDropdown span {
    max-width: 150px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: inline-block;
}
@media (max-width: 575.98px) {
    #schoolDropdown span {
        max-width: 100px;
    }
}

/* Full screen camera capture styling */
#cameraStreamContainer:not(.d-none) {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background-color: #000 !important;
    z-index: 9999 !important;
    margin: 0 !important;
    padding: 20px !important;
    border: none !important;
    border-radius: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: flex-end !important;
    align-items: center !important;
}

#cameraStreamContainer:not(.d-none) #webcamVideo {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    border: none !important;
    border-radius: 0 !important;
    z-index: 10000 !important;
}

/* Dynamic circular guiding overlay in the center */
#cameraStreamContainer:not(.d-none)::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 350px;
    border: 3px dashed rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10001;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5); /* Dim area outside guide */
}

/* Position control elements */
#cameraStreamContainer:not(.d-none) .d-flex.justify-content-center.gap-2 {
    position: absolute !important;
    bottom: 40px !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 10002 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 30px !important;
}

/* iOS/Android native capture-styled buttons */
#cameraStreamContainer:not(.d-none) #snapPhotoBtn {
    width: 76px !important;
    height: 76px !important;
    border-radius: 50% !important;
    background-color: #fff !important;
    border: 6px solid rgba(255, 255, 255, 0.3) !important;
    color: transparent !important;
    font-size: 0 !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6) !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    position: relative !important;
}

#cameraStreamContainer:not(.d-none) #snapPhotoBtn::after {
    content: '\f030';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--primary-color, #1e40af);
    font-size: 1.6rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#cameraStreamContainer:not(.d-none) #snapPhotoBtn:hover {
    transform: scale(1.08) !important;
    background-color: #f8fafc !important;
}

#cameraStreamContainer:not(.d-none) #snapPhotoBtn:active {
    transform: scale(0.92) !important;
}

#cameraStreamContainer:not(.d-none) #stopCameraBtn {
    width: 54px !important;
    height: 54px !important;
    border-radius: 50% !important;
    background-color: rgba(239, 68, 68, 0.8) !important;
    border: none !important;
    color: #fff !important;
    font-size: 0 !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4) !important;
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: all 0.2s ease !important;
    position: relative !important;
}

#cameraStreamContainer:not(.d-none) #stopCameraBtn::after {
    content: '\f00d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 1.3rem;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#cameraStreamContainer:not(.d-none) #stopCameraBtn:hover {
    background-color: rgba(239, 68, 68, 1) !important;
    transform: scale(1.05) !important;
}

#viewStudentInitials, #viewStudentPhotoContainer img {
    max-width: 100% !important;
}

@media (max-width: 575.98px) {
    .d-flex.flex-wrap.gap-2 .btn,
    .d-flex.flex-wrap.gap-2 a.btn {
        padding: 0.375rem 0.5rem !important;
        font-size: 0.8rem !important;
    }
}