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

html,
body {
    margin: 0;
    padding: 0;
    font-family: Inter, Arial, Helvetica, sans-serif;
    background: var(--bg, #f8fafc);
    color: var(--text, #0f172a);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

button,
input,
textarea,
select {
    font: inherit;
}

.app-body {
    background: var(--bg, #f8fafc);
}

.app-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--sidebar, #111827);
    color: #ffffff;
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 28px;
}

.logo-box {
    flex-shrink: 0;
}

.school-logo {
    width: var(--logo-width, 120px);
    max-width: 100%;
    border-radius: 12px;
}

.logo-placeholder {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo-placeholder.large {
    width: 76px;
    height: 76px;
    border-radius: 20px;
    margin: 0 auto 16px;
    font-size: 20px;
}

.brand-text h2 {
    font-size: 18px;
    margin: 0 0 4px;
}

.brand-text span {
    color: rgba(255,255,255,0.70);
    text-transform: capitalize;
    font-size: 13px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
}

.nav-link {
    padding: 14px 16px;
    border-radius: 14px;
    color: rgba(255,255,255,0.85);
    transition: 0.25s ease;
    font-weight: 600;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255,255,255,0.10);
    color: #ffffff;
}

.sidebar-footer {
    color: rgba(255,255,255,0.60);
    font-size: 12px;
    margin-top: 20px;
}

.main-content {
    padding: 28px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    margin-bottom: 26px;
}

.page-title {
    margin: 0;
    font-size: 28px;
    font-weight: 800;
}

.page-subtitle {
    margin: 6px 0 0;
    color: var(--muted, #64748b);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--surface, #fff);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: var(--card-radius, 18px);
    padding: 22px;
    box-shadow: var(--shadow);
}

.stat-label {
    display: block;
    color: var(--muted, #64748b);
    font-size: 13px;
    margin-bottom: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--secondary, #0f172a);
}

.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 22px;
}

.content-grid.single {
    grid-template-columns: 1fr;
}

.panel {
    background: var(--surface, #fff);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: var(--card-radius, 18px);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.panel-header {
    padding: 20px 22px;
    border-bottom: 1px solid var(--border, #e2e8f0);
    background: var(--surface-alt, #eef2ff);
}

.panel-header h2 {
    margin: 0;
    font-size: 18px;
}

.panel-body {
    padding: 22px;
}

.status-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.status-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border, #e2e8f0);
}

.status-list li:last-child {
    border-bottom: 0;
}

.dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    display: inline-block;
}

.dot.success {
    background: #16a34a;
}

.dot.warning {
    background: #f59e0b;
}

.quick-actions {
    margin-top: 18px;
}

.settings-form .grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 18px;
}

.form-group label {
    font-weight: 700;
    color: var(--secondary, #0f172a);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 14px;
    padding: 13px 14px;
    background: var(--surface, #fff);
    color: var(--text, #0f172a);
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary, #2563eb);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.checkbox-group {
    justify-content: end;
}

.form-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    border: 0;
    padding: 12px 18px;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 700;
    transition: .2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary {
    background: var(--primary, #2563eb);
    color: #fff;
}

.btn-outline {
    border: 1px solid var(--border, #cbd5e1);
    background: transparent;
    color: var(--text, #0f172a);
}

.btn-outline-danger {
    border: 1px solid #ef4444;
    color: #ef4444;
    background: transparent;
}

.btn-block {
    width: 100%;
}

.flash {
    width: min(1100px, calc(100% - 30px));
    margin: 18px auto 0;
    border-radius: 16px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 50;
}

.flash-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.flash-success {
    background: #dcfce7;
    color: #166534;
}

.flash-danger {
    background: #fee2e2;
    color: #991b1b;
}

.flash-warning {
    background: #fef3c7;
    color: #92400e;
}

.flash-info {
    background: #dbeafe;
    color: #1d4ed8;
}

.flash-close {
    background: transparent;
    border: 0;
    font-size: 22px;
    cursor: pointer;
    color: inherit;
}

.muted-text {
    color: var(--muted, #64748b);
}

.landing-body,
.auth-page {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(37,99,235,0.20), transparent 34%),
        radial-gradient(circle at bottom right, rgba(245,158,11,0.16), transparent 30%),
        var(--bg, #f8fafc);
}

.landing-hero,
.auth-layout {
    min-height: 100vh;
    display: grid;
}

.landing-hero {
    place-items: center;
    padding: 24px;
}

.landing-card {
    background: var(--surface, #fff);
    width: min(760px, 100%);
    padding: 46px;
    border-radius: 28px;
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid var(--border, #e2e8f0);
}

.landing-card h1 {
    font-size: 52px;
    margin: 0 0 14px;
}

.landing-card p {
    font-size: 18px;
    color: var(--muted, #64748b);
    margin: 0 0 20px;
}

.tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 8px 14px;
    background: rgba(37,99,235,0.10);
    color: var(--primary, #2563eb);
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-actions {
    margin-top: 12px;
}

.auth-layout {
    grid-template-columns: 1.1fr 0.9fr;
}

.auth-hero {
    display: grid;
    place-items: center;
    padding: 32px;
}

.auth-hero-card,
.auth-form-card {
    background: var(--surface, #fff);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.auth-hero-card {
    width: min(640px, 100%);
    padding: 40px;
}

.auth-hero-card h1 {
    margin: 0 0 12px;
    font-size: 40px;
}

.auth-hero-card p {
    color: var(--muted, #64748b);
}

.auth-school-box {
    margin-top: 26px;
    padding: 18px;
    border-radius: 18px;
    background: var(--surface-alt, #eef2ff);
}

.auth-form-wrap {
    display: grid;
    place-items: center;
    padding: 32px;
}

.auth-form-card {
    width: min(460px, 100%);
    padding: 34px;
}

.auth-logo-area {
    text-align: center;
    margin-bottom: 14px;
}

.auth-logo {
    max-width: var(--logo-width, 120px);
    margin: 0 auto 12px;
    border-radius: 16px;
}

.auth-form-card h2 {
    margin: 0 0 8px;
    text-align: center;
    font-size: 28px;
}

.demo-box {
    margin-top: 18px;
    padding: 14px;
    border: 1px dashed var(--border, #cbd5e1);
    border-radius: 16px;
    background: var(--surface-alt, #eef2ff);
}

.demo-box h4 {
    margin: 0 0 10px;
}

@media (max-width: 1080px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .auth-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-right: 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .settings-form .grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .main-content,
    .auth-form-wrap,
    .auth-hero,
    .landing-hero {
        padding: 18px;
    }

    .panel-body,
    .panel-header,
    .stat-card,
    .landing-card,
    .auth-form-card,
    .auth-hero-card {
        padding: 18px;
    }

    .landing-card h1,
    .auth-hero-card h1 {
        font-size: 30px;
    }

    .page-title {
        font-size: 24px;
    }
}
.panel-header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}

.data-table th,
.data-table td {
    text-align: left;
    padding: 14px 12px;
    border-bottom: 1px solid var(--border, #e2e8f0);
    vertical-align: middle;
}

.data-table th {
    background: var(--surface-alt, #eef2ff);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--secondary, #0f172a);
}

.data-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.04);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.10);
    color: var(--primary, #2563eb);
    font-size: 12px;
    font-weight: 700;
}

.badge-success {
    background: rgba(22, 163, 74, 0.12);
    color: #15803d;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.12);
    color: #b91c1c;
}

.table-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-sm {
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 13px;
}

.filter-bar {
    margin-bottom: 18px;
}

.filter-grid {
    display: grid;
    grid-template-columns: 2fr 1fr auto;
    gap: 12px;
}

.table-logo {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--border, #e2e8f0);
    background: #fff;
}

.preview-logo {
    width: 90px;
    height: 90px;
    object-fit: contain;
    border-radius: 16px;
    border: 1px solid var(--border, #e2e8f0);
    background: #fff;
    padding: 8px;
}

@media (max-width: 860px) {
    .filter-grid {
        grid-template-columns: 1fr;
    }
}
select[disabled],
input[disabled],
textarea[disabled] {
    opacity: 0.75;
    cursor: not-allowed;
}

.table-wrap::-webkit-scrollbar {
    height: 10px;
}

.table-wrap::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.35);
    border-radius: 999px;
}

.table-wrap::-webkit-scrollbar-track {
    background: rgba(226, 232, 240, 0.45);
}