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

:root {
    --bg: #f4f6f8;
    --card: #fff;
    --text: #1a1a2e;
    --muted: #5c6370;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #059669;
    --error: #dc2626;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 16px;
}

.container {
    max-width: 520px;
    margin: 0 auto;
    padding: 1rem 1rem 2rem;
}

.admin-page .container {
    max-width: 720px;
}

h1 {
    font-size: 1.5rem;
    margin: 0 0 0.25rem;
}

h2 {
    font-size: 1.1rem;
    margin: 0 0 0.75rem;
}

.subtitle {
    color: var(--muted);
    margin: 0 0 1.25rem;
    font-size: 0.95rem;
}

.hero {
    text-align: center;
    padding: 1.5rem 0 0.5rem;
}

.hero h1 {
    font-size: 1.75rem;
}

.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.card-grid {
    display: grid;
    gap: 1rem;
}

.form label {
    display: block;
    margin-bottom: 1rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form input[type="text"],
.form input[type="email"],
.form input[type="password"],
.form input[type="date"],
.form select {
    display: block;
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: #fff;
}

.form-inline {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-inline .grow {
    flex: 1;
    min-width: 180px;
}

.btn {
    display: inline-block;
    padding: 0.7rem 1.1rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
    cursor: pointer;
    font-family: inherit;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 0.4rem 0.65rem;
    font-size: 0.85rem;
}

.btn-danger {
    color: var(--error);
    border-color: #fecaca;
}

.alert {
    padding: 0.85rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
}

.hint {
    color: var(--muted);
    font-size: 0.875rem;
}

.hint-inline {
    font-weight: 400;
    color: var(--muted);
}

.back-link {
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.back-link a {
    color: var(--primary);
}

.admin-nav {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.admin-nav a {
    padding: 0.45rem 0.75rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--muted);
    font-size: 0.9rem;
}

.admin-nav a.active,
.admin-nav a:hover {
    background: #e0e7ff;
    color: var(--primary);
}

.stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.stat {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat .num {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.stat .lbl {
    font-size: 0.8rem;
    color: var(--muted);
}

.link-box {
    background: #f1f5f9;
    padding: 0.75rem;
    border-radius: 8px;
    word-break: break-all;
    font-family: monospace;
    font-size: 0.9rem;
}

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

.progress-list li {
    margin-bottom: 1rem;
}

.progress-head {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    font-size: 0.9rem;
    margin-bottom: 0.35rem;
}

.progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 99px;
    overflow: hidden;
}

.progress-bar span {
    display: block;
    height: 100%;
    background: var(--success);
    border-radius: 99px;
    transition: width 0.2s;
}

.item-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.item-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.inline-form {
    margin: 0;
}

.table-wrap {
    overflow-x: auto;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.report-table th,
.report-table td {
    padding: 0.6rem 0.5rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
}

.report-table th {
    background: #f8fafc;
    font-weight: 600;
}

.tick-cell {
    text-align: center;
    color: var(--success);
    font-weight: 700;
}

.student-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.progress-summary {
    background: var(--card);
    padding: 1rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.progress-summary span {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.check-item {
    background: var(--card);
    border-radius: var(--radius);
    margin-bottom: 0.65rem;
    box-shadow: var(--shadow);
}

.check-item label {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 1rem;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.check-item input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.check-ui {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    border: 2px solid var(--border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.check-item.done .check-ui {
    background: var(--success);
    border-color: var(--success);
}

.check-item.done .check-ui::after {
    content: '✓';
    color: #fff;
    font-size: 14px;
    font-weight: 700;
}

.check-item.done .check-label {
    text-decoration: line-through;
    color: var(--muted);
}

.check-label {
    font-size: 1rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.tenant-header {
    text-align: center;
    padding-top: 0.5rem;
}

.docs-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

.docs-nav a {
    font-size: 0.8rem;
    padding: 0.35rem 0.6rem;
    background: var(--card);
    border-radius: 99px;
    text-decoration: none;
    color: var(--primary);
    box-shadow: var(--shadow);
}

.docs-section h2 {
    margin-top: 0;
}

.docs-steps,
.docs-list,
.docs-checklist {
    padding-left: 1.25rem;
    margin: 0.75rem 0;
}

.docs-steps li,
.docs-list li,
.docs-checklist li {
    margin-bottom: 0.5rem;
}

.docs-faq dt {
    font-weight: 600;
    margin-top: 1rem;
}

.docs-faq dt:first-child {
    margin-top: 0;
}

.docs-faq dd {
    margin: 0.25rem 0 0;
    color: var(--muted);
}

.docs-page .container {
    max-width: 640px;
}

@media (min-width: 600px) {
    .card-grid {
        grid-template-columns: 1fr 1fr;
    }
}