:root {
    --color-bg: #f4f6f8;
    --color-surface: #ffffff;
    --color-border: #dde3ea;
    --color-text: #1f2933;
    --color-text-muted: #616e7c;
    --color-primary: #1b4f72;
    --color-primary-dark: #123a56;
    --color-accent: #2e86ab;
    --color-success: #1a7a4c;
    --color-success-bg: #e6f4ec;
    --color-warning: #9a6400;
    --color-warning-bg: #fdf3dc;
    --color-danger: #a3352b;
    --color-danger-bg: #fbe9e7;
    --color-neutral-bg: #eceff1;
    --radius: 6px;
    --shadow: 0 1px 2px rgba(16, 24, 32, 0.06), 0 1px 1px rgba(16, 24, 32, 0.04);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 15px;
    line-height: 1.5;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.app-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-weight: 600;
}

.brand-mark {
    font-size: 1.15rem;
    letter-spacing: 0.02em;
}

.brand-sub {
    font-size: 0.85rem;
    color: #cfe0ea;
    font-weight: 400;
}

.main-nav {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.main-nav a {
    color: #dde9f0;
    font-weight: 500;
    padding: 0.35rem 0.15rem;
    border-bottom: 2px solid transparent;
}

.main-nav a:hover {
    text-decoration: none;
    color: #fff;
}

.main-nav a.active {
    color: #fff;
    border-bottom-color: var(--color-accent);
}

.app-main {
    flex: 1;
    max-width: 1180px;
    width: 100%;
    margin: 0 auto;
    padding: 1.75rem 1.5rem 3rem;
}

.app-footer {
    padding: 0.9rem 1.5rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

h1 {
    font-size: 1.55rem;
    margin: 0 0 0.25rem;
}

h2 {
    font-size: 1.15rem;
    margin: 0 0 0.75rem;
}

.page-subtitle {
    color: var(--color-text-muted);
    margin: 0 0 1.5rem;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem 1.4rem;
    margin-bottom: 1.5rem;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.kpi-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1rem 1.1rem;
}

.kpi-value {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.kpi-label {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 0.15rem;
}

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

.tree-domain {
    margin-bottom: 1.1rem;
}

.tree-domain-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.4rem;
    color: var(--color-primary-dark);
}

.tree-regulations {
    list-style: none;
    margin: 0;
    padding-left: 1.4rem;
    border-left: 2px solid var(--color-border);
}

.tree-regulation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.4rem 0.6rem;
    border-radius: var(--radius);
}

.tree-regulation:hover {
    background: var(--color-neutral-bg);
}

.tree-regulation a {
    color: var(--color-text);
    font-weight: 500;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    white-space: nowrap;
}

.status-badge.matched {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.status-badge.review_required {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.status-badge.not_found,
.status-badge.not_mapped {
    background: var(--color-neutral-bg);
    color: var(--color-text-muted);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

th, td {
    text-align: left;
    padding: 0.55rem 0.7rem;
    border-bottom: 1px solid var(--color-border);
}

th {
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

tbody tr:hover {
    background: var(--color-neutral-bg);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
}

.btn:hover {
    background: var(--color-primary-dark);
    text-decoration: none;
}

.btn.secondary {
    background: var(--color-surface);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.btn.secondary:hover {
    background: var(--color-neutral-bg);
}

.btn-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin: 0.75rem 0;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    margin-bottom: 0.85rem;
}

.form-row label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.form-row input[type="text"],
.form-row input[type="file"] {
    padding: 0.5rem 0.6rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.92rem;
}

.candidate-list {
    list-style: none;
    margin: 0.5rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.candidate-list li form {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    background: var(--color-neutral-bg);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
}

.candidate-title {
    font-size: 0.88rem;
}

.candidate-title .muted {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert.success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.alert.error {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.alert.info {
    background: #e7f0fa;
    color: var(--color-primary-dark);
}

.article-block {
    border-bottom: 1px solid var(--color-border);
    padding: 0.9rem 0;
}

.article-block:last-child {
    border-bottom: none;
}

.article-ref {
    font-weight: 700;
    color: var(--color-primary-dark);
}

.article-title {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    margin-left: 0.4rem;
}

.article-text {
    margin-top: 0.35rem;
    white-space: pre-wrap;
    font-size: 0.93rem;
}

.meta-list {
    list-style: none;
    padding: 0;
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
}

.meta-list li {
    margin-bottom: 0.3rem;
}

.meta-list .label {
    color: var(--color-text-muted);
    display: inline-block;
    min-width: 120px;
}

.demo-tag {
    display: inline-block;
    background: var(--color-warning-bg);
    color: var(--color-warning);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.4rem;
}

.empty-state {
    color: var(--color-text-muted);
    font-style: italic;
    padding: 1rem 0;
}

@media (max-width: 640px) {
    .app-header {
        flex-direction: column;
        align-items: flex-start;
    }

    th, td {
        padding: 0.45rem 0.4rem;
        font-size: 0.85rem;
    }

    .meta-list .label {
        min-width: 0;
        display: block;
    }
}