body.app-body.bg-app,
body.app-body {
    min-height: 100vh;
    background: #f5f6fa;
    color: #0f172a;
}

body.app-loader-on {
    overflow: hidden;
}

.app-loader-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(6px);
    pointer-events: all;
}

.app-loader-card {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100000;
    min-width: 220px;
    max-width: min(92vw, 360px);
    border-radius: 14px;
    pointer-events: none;
}

.app-topbar {
    z-index: 1030;
    height: 60px;
}

.app-navbar-height {
    height: 60px;
}

.app-user-dot {
    width: 32px;
    height: 32px;
}

.app-user-name {
    max-width: 12rem;
}

.app-container {
    display: flex;
    min-height: calc(100vh - 60px);
}

.app-sidebar {
    width: 250px;
    min-width: 250px;
    height: calc(100vh - 60px);
    position: sticky;
    top: 60px;
    background: #f8f9fa;
    border-right: 1px solid #e9ecef;
}

.main-content {
    flex: 1;
    min-width: 0;
}

.page-content {
    max-width: 1320px;
    margin: 0 auto;
}

.app-nav-link {
    color: #334155;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 0.92rem;
    font-weight: 500;
    transition: all 0.18s ease;
}

.app-nav-link:hover {
    background: #eef2ff;
    color: #0f172a;
}

.app-nav-link.active {
    background: rgba(13, 110, 253, 0.12);
    color: #0d6efd;
    font-weight: 600;
}

.app-offcanvas {
    --bs-offcanvas-width: min(320px, 92vw);
}

.card {
    border: 1px solid #e9edf5;
    border-radius: 14px;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
}

.btn,
.form-control,
.form-select,
.badge,
.modal-content,
.table tbody tr {
    transition: all 0.18s ease;
}

.btn {
    border-radius: 10px;
    font-weight: 600;
}

.btn:hover {
    transform: translateY(-1px);
}

.modal-content {
    border: 1px solid #e6edf6;
    border-radius: 18px;
    box-shadow: 0 28px 70px rgba(15, 23, 42, 0.16);
}

.table tbody tr:hover {
    background: rgba(241, 245, 249, 0.75);
}

.app-time-meta {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.app-time-meta .primary {
    font-weight: 600;
    color: #0f172a;
}

.app-time-meta .secondary {
    color: #64748b;
    font-size: 0.82rem;
}

.status-badge-stack {
    display: inline-flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.recording-meta-card,
.surface-card {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid #e4ebf5;
    border-radius: 16px;
}

.app-loader-card {
    min-width: 260px;
    border-radius: 24px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 251, 255, 0.95) 100%);
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.24);
}

.app-swal-popup {
    border-radius: 24px;
    padding: 1.15rem 1.15rem 0.85rem;
    border: 1px solid rgba(226, 232, 240, 0.95);
    box-shadow: 0 32px 80px rgba(15, 23, 42, 0.24);
}

.app-swal-popup-success {
    background: linear-gradient(180deg, #ffffff 0%, #f5fff8 100%);
}

.app-swal-popup-warning {
    background: linear-gradient(180deg, #ffffff 0%, #fffaf2 100%);
}

.app-swal-popup-error {
    background: linear-gradient(180deg, #ffffff 0%, #fff5f5 100%);
}

.app-swal-popup-info {
    background: linear-gradient(180deg, #ffffff 0%, #f5faff 100%);
}

.app-swal-title {
    color: #000;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.app-swal-body {
    color: #000;
    font-size: 15px;
}

.app-swal-actions {
    gap: 0.75rem;
    margin-top: 1.15rem;
}

.app-swal-confirm,
.app-swal-cancel {
    min-width: 124px;
    border-radius: 999px;
    padding-inline: 1rem;
}

.app-toast-popup {
    border-radius: 18px;
    padding: 0.8rem 0.95rem;
    background: rgba(15, 23, 42, 0.96);
    color: #f8fafc;
    box-shadow: 0 24px 50px rgba(15, 23, 42, 0.28);
}

.app-toast-title {
    font-weight: 700;
    letter-spacing: -0.01em;
}

.app-toast-body {
    color: rgba(248, 250, 252, 0.84);
    font-size: 0.88rem;
}

.app-toast-progress {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.95), rgba(191, 219, 254, 0.9));
}

.app-fallback-dialog-backdrop {
    position: fixed;
    inset: 0;
    z-index: 2100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.42);
    padding: 1rem;
}

.app-fallback-dialog {
    width: min(100%, 420px);
    background: #fff;
    border-radius: 18px;
    padding: 1.4rem;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.2);
}

.app-fallback-dialog-title {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: #0f172a;
}

.app-fallback-dialog-text {
    margin: 0;
    color: #475569;
}

.app-fallback-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.65rem;
    margin-top: 1rem;
}

.app-fallback-toast {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2100;
    min-width: 280px;
    max-width: 360px;
    padding: 0.9rem 1rem;
    border-radius: 16px;
    color: #fff;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
    opacity: 0;
    transform: translateY(-8px);
}

.app-fallback-toast.show {
    opacity: 1;
    transform: translateY(0);
}

.app-fallback-toast-success {
    background: linear-gradient(135deg, #198754, #157347);
}

.app-fallback-toast-warning {
    background: linear-gradient(135deg, #fd7e14, #ea580c);
}

.app-fallback-toast-error {
    background: linear-gradient(135deg, #dc3545, #b42318);
}

.app-fallback-toast-info {
    background: linear-gradient(135deg, #0d6efd, #2563eb);
}

.calendar-shell {
    overflow: visible;
}

.classes-page .card,
.banner-card,
.surface-card {
    overflow: hidden;
}

/* Bootstrap modals above app chrome (loader 2000, topbar 1030) */
.modal-backdrop {
    z-index: 2050 !important;
}

.modal.schedule-class-modal {
    z-index: 2055 !important;
}

body.schedule-modal-open {
    overflow: hidden !important;
    padding-right: 0;
}

.schedule-class-modal .modal-dialog {
    margin: 1rem auto;
    max-width: min(96vw, 720px);
}

.schedule-class-modal .modal-body {
    max-height: min(72vh, 560px);
    overflow-x: hidden;
    overflow-y: auto;
}

.schedule-class-page .student-picker-panel {
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 0.85rem;
    background: #f8fafc;
}

.schedule-class-page .student-picker-panel select[multiple] {
    min-height: 160px;
}

.teacher-launch-modal .modal-content {
    border-radius: 18px;
}

.teacher-launch-modal .btn-lg {
    font-weight: 600;
}

.badge.text-bg-warning {
    color: #2d1600 !important;
}

.table .badge {
    letter-spacing: 0.02em;
}

.dashboard-stat-card {
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.dashboard-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.app-loader-card .spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.24rem;
    box-shadow: 0 0 0 0.32rem rgba(13, 110, 253, 0.08);
}

.dashboard-stat-card .card-body {
    padding: 1.2rem 1.25rem;
}

.dashboard-stat-card .stat-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
}

.table > :not(caption) > * > * {
    padding-top: 0.7rem;
    padding-bottom: 0.7rem;
}

.login-page-shell {
    background: #f5f6fa;
}

.login-box {
    max-width: 430px;
    background: #fff;
    border-radius: 16px;
    padding: 2.1rem 1.8rem;
    border: 1px solid #e9edf5;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.login-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #0f172a;
}

.login-subtitle {
    font-size: 0.94rem;
    color: #64748b;
}

.login-form .form-control,
.login-form .input-group-text {
    border-color: #dbe2ee;
}

.login-form .form-control:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.18rem rgba(13, 110, 253, 0.18);
}

.login-form .input-group > .form-control {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.login-form .input-group > .input-group-text {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    background: #f8fafc;
    color: #64748b;
}

.login-banner-section {
    overflow: hidden;
}

.login-banner-image,
.student-dashboard-banner-image {
    object-fit: cover;
}

.login-banner-fallback,
.student-dashboard-banner-fallback {
    background: linear-gradient(135deg, #1d4ed8, #06b6d4);
}

.login-banner-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 2rem;
    color: #fff;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.12));
}

.student-dashboard-banner-card {
    min-height: 100%;
}

.student-dashboard-banner-wrap {
    min-height: 320px;
}

.student-dashboard-banner-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1.1rem 1.2rem;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.12));
}

.banner-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    min-height: 320px;
}

.banner-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(100%);
}

.banner-card .overlay {
    position: absolute;
    bottom: 20px;
    left: 20px;
    color: #fff;
}

.report-form-page {
    max-width: 860px;
    margin: 0 auto;
}

.report-google-form .form-control,
.report-google-form .form-select {
    border-radius: 0.5rem;
    border-color: #e2e8f0;
}

.report-google-form .form-control:focus,
.report-google-form .form-select:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.report-field-group {
    margin-bottom: 1.5rem;
}

.report-field-label {
    display: block;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.65rem;
    font-size: 0.95rem;
}

.report-radio-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.report-radio-item {
    padding: 0.5rem 0.75rem;
    border: 1px solid #e8edf4;
    border-radius: 0.5rem;
    margin: 0;
    transition: border-color 0.15s, background 0.15s;
}

.report-radio-item:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.report-radio-item .form-check-input {
    margin-top: 0.35rem;
}

.report-radio-item .form-check-label {
    padding-left: 0.25rem;
    line-height: 1.4;
}

@media (max-width: 991.98px) {
    .app-container {
        display: block;
    }

    .app-sidebar {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .login-box {
        padding: 1.5rem 1.2rem;
    }

    .login-title {
        font-size: 1.55rem;
    }
}