:root {
    color-scheme: light;
    --bg: #f4f5f2;
    --surface: #ffffff;
    --text: #17211b;
    --muted: #637068;
    --line: #d9dfda;
    --accent: #146c4b;
    --accent-dark: #0d5137;
    --accent-soft: #dff1e8;
    --danger: #9d2f2f;
    --danger-soft: #fbe7e5;
    --shadow: 0 14px 36px rgb(28 48 36 / 9%);
    --radius: 14px;
}

* { box-sizing: border-box; }
html { font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); text-underline-offset: 0.2em; }
a:hover { color: var(--accent-dark); }
button, input, select, textarea { font: inherit; }
.shell { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.site-header { background: rgb(255 255 255 / 92%); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(12px); }
.nav { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { color: var(--text); font-weight: 800; text-decoration: none; letter-spacing: -0.025em; }
.nav-links { display: flex; align-items: center; gap: 1.1rem; }
.nav-links > a:not(.button), .link-button { color: var(--text); text-decoration: none; font-weight: 650; }
.nav-user { color: var(--muted); border-left: 1px solid var(--line); padding-left: 1rem; }
.nav-toggle { display: none; }
.inline-form { display: inline; }
.link-button { border: 0; background: transparent; cursor: pointer; padding: 0; }
.main-content { flex: 1; padding-block: 3.5rem 5rem; }
.site-footer { padding-block: 2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
.hero { padding: clamp(2rem, 6vw, 5.5rem) 0; max-width: 820px; }
.hero h1, .page-header h1, .auth-card h1, .error-page h1 { font-size: clamp(2.3rem, 6vw, 4.8rem); line-height: 0.98; letter-spacing: -0.055em; margin: 0.15em 0 0.35em; }
.page-header h1, .auth-card h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
.lead { color: var(--muted); font-size: clamp(1.05rem, 2.2vw, 1.35rem); line-height: 1.65; max-width: 720px; }
.eyebrow { color: var(--accent); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--accent); border-radius: 9px; padding: 0.72rem 1rem; background: var(--accent); color: white; font-weight: 750; text-decoration: none; cursor: pointer; }
.button:hover { background: var(--accent-dark); color: white; }
.button.secondary { background: transparent; color: var(--accent); }
.button.secondary:hover { background: var(--accent-soft); }
.button.small { padding: 0.46rem 0.7rem; font-size: 0.9rem; }
.feature-grid, .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.stats-grid { grid-template-columns: repeat(4, 1fr); margin-bottom: 1rem; }
.card, .stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: clamp(1.25rem, 3vw, 2rem); }
.card h2 { margin-top: 0; }
.card p { color: var(--muted); line-height: 1.6; }
.stat span { color: var(--muted); display: block; }
.stat strong { display: block; font-size: 2.2rem; margin-top: 0.3rem; }
.auth-card { max-width: 520px; margin-inline: auto; }
.form-stack { display: grid; gap: 1.1rem; }
.form-stack label { display: grid; gap: 0.4rem; font-weight: 700; }
input, select, textarea { width: 100%; border: 1px solid #b9c3bc; border-radius: 8px; padding: 0.78rem 0.85rem; background: var(--surface); color: var(--text); }
input:focus, select:focus, textarea:focus { outline: 3px solid rgb(20 108 75 / 18%); border-color: var(--accent); }
textarea { resize: vertical; line-height: 1.5; }
.hint, .form-foot, small { color: var(--muted); font-size: 0.86rem; font-weight: 500; }
.form-foot { text-align: center; margin-top: 1rem; }
.notice { border-radius: 9px; padding: 0.85rem 1rem; margin-bottom: 1rem; border: 1px solid; }
.notice.success { color: var(--accent-dark); background: var(--accent-soft); border-color: #a7d5bf; }
.notice.error { color: var(--danger); background: var(--danger-soft); border-color: #e7aaa5; }
.notice.warning { color: #714510; background: #fff2d7; border-color: #e6c784; }
.notice ul { margin-block: 0; padding-left: 1.2rem; }
.page-header { margin-bottom: 1.5rem; }
.split { display: flex; justify-content: space-between; align-items: end; gap: 1rem; }
.detail-list { max-width: 720px; }
.detail-list > div { display: flex; justify-content: space-between; gap: 2rem; padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
.detail-list > div:last-child { border: 0; }
.detail-list span { color: var(--muted); }
.badge, .status { display: inline-block; border-radius: 999px; padding: 0.2rem 0.55rem; background: var(--accent-soft); color: var(--accent-dark); font-size: 0.8rem; font-weight: 800; text-transform: capitalize; }
.status.inactive { background: var(--danger-soft); color: var(--danger); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.85rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
td small { display: block; margin-top: 0.2rem; }
.compact-form { display: flex; gap: 0.4rem; min-width: 190px; }
.compact-form select { padding: 0.45rem; }
.compact-form button { border: 1px solid var(--line); background: var(--surface); border-radius: 7px; cursor: pointer; }
.search-form { display: flex; gap: 0.5rem; max-width: 520px; margin-bottom: 1rem; }
.lead.compact { font-size: 1rem; margin-block: 0.5rem 0; }
.header-actions { margin-top: 0; }
.admin-tool-card { display: flex; justify-content: space-between; align-items: center; gap: 2rem; margin-top: 1rem; }
.admin-tool-card p { margin-bottom: 0; }
.admin-tabs { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 1rem; border-bottom: 1px solid var(--line); }
.admin-tabs a { color: var(--muted); font-weight: 750; text-decoration: none; padding: 0.75rem 0.9rem; border-bottom: 3px solid transparent; }
.admin-tabs a:hover, .admin-tabs a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }
.schema-card { margin-bottom: 1rem; }
.schema-card > summary, .danger-zone > summary, .nested-details > summary { cursor: pointer; font-weight: 800; }
.schema-card > summary, .danger-zone > summary { font-size: 1.2rem; }
.schema-card[open] > summary, .danger-zone[open] > summary { margin-bottom: 1rem; }
.nested-details { border-top: 1px solid var(--line); margin-top: 1rem; padding-top: 1rem; }
.nested-details[open] > summary { margin-bottom: 1rem; }
.form-grid { display: grid; grid-template-columns: 1.2fr 1fr 1.2fr auto auto auto; align-items: end; gap: 0.75rem; }
.form-grid label { display: grid; gap: 0.35rem; font-weight: 700; }
.check-label { display: flex !important; align-items: center; gap: 0.4rem !important; min-height: 43px; white-space: nowrap; }
.check-label input, .check-cell input, .field-options input { width: auto; }
.check-cell { text-align: center; }
.schema-builder input, .schema-builder select { min-width: 120px; }
.schema-builder .check-cell input { min-width: auto; }
.database-rows { padding: 0; max-height: 68vh; }
.database-rows thead { position: sticky; top: 0; background: var(--surface); z-index: 1; }
.data-cell { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.null-value { color: var(--muted); font-style: italic; }
.row-actions { display: flex; gap: 0.75rem; align-items: center; white-space: nowrap; }
.danger-link { color: var(--danger); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 1rem; margin: 1rem 0; }
.danger-zone { margin-top: 1rem; border-color: #e7aaa5; }
.operation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.danger-button { background: var(--danger); border-color: var(--danger); }
.danger-button:hover { background: #782020; }
.field-row { border: 1px solid var(--line); border-radius: 10px; padding: 1rem; }
.field-row legend { font-weight: 800; padding-inline: 0.35rem; }
.field-row legend span { color: var(--muted); font-size: 0.78rem; font-weight: 600; }
.field-options { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 0.55rem; color: var(--muted); }
.field-options label { display: flex; align-items: center; gap: 0.35rem; font-size: 0.86rem; }
.sql-form textarea { font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace; tab-size: 4; }
.sql-results { margin-top: 1rem; }
.sql-results .table-wrap { max-height: 60vh; }
.error-page { max-width: 760px; padding-block: 5rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 760px) {
    .nav-toggle { display: block; border: 1px solid var(--line); border-radius: 8px; padding: 0.45rem 0.7rem; background: var(--surface); }
    .nav-links { display: none; position: absolute; inset: 68px 0 auto; padding: 1rem; background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
    .nav-links.open { display: flex; }
    .nav-user { border-left: 0; padding: 0; }
    .feature-grid, .stats-grid { grid-template-columns: 1fr 1fr; }
    .split { align-items: flex-start; flex-direction: column; }
    .admin-tool-card, .operation-grid { align-items: stretch; flex-direction: column; grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .feature-grid, .stats-grid { grid-template-columns: 1fr; }
    .detail-list > div { align-items: flex-start; flex-direction: column; gap: 0.25rem; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; } }