/* ── Design Tokens ───────────────────────────────────────────────────── */
:root {
    /* Sidebar */
    --color-sidebar-bg: #0d0b07;
    --color-sidebar-border: rgba(210, 158, 58, 0.12);
    --color-sidebar-text: #f5eddf;
    --color-sidebar-text-secondary: #a8937a;
    --color-sidebar-text-muted: #5e4c37;
    --color-sidebar-hover: rgba(210, 158, 58, 0.08);
    --color-sidebar-active-bg: rgba(217, 119, 6, 0.18);

    /* Content surfaces — warm mahogany darks */
    --color-bg: #12100a;
    --color-surface: #1c1812;
    --color-surface-hover: #241e14;
    --color-surface-elevated: #2c2418;
    --color-border: rgba(210, 158, 58, 0.14);
    --color-border-subtle: rgba(210, 158, 58, 0.07);

    /* Text — parchment hierarchy */
    --color-text: #f5eddf;
    --color-text-secondary: #a8937a;
    --color-text-muted: #5e4c37;

    /* Brand — amber lantern */
    --color-primary: #d97706;
    --color-primary-light: #fbbf24;
    --color-primary-dark: #b45309;
    --color-primary-glow: rgba(217, 119, 6, 0.22);

    /* Status — warm-harmonised */
    --color-success: #34d399;
    --color-success-bg: rgba(52, 211, 153, 0.11);
    --color-warning: #fb923c;
    --color-warning-bg: rgba(251, 146, 60, 0.12);
    --color-danger: #f87171;
    --color-danger-bg: rgba(248, 113, 113, 0.11);
    --color-info: #2dd4bf;
    --color-info-bg: rgba(45, 212, 191, 0.11);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 4px 18px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 8px 36px rgba(0, 0, 0, 0.65);
}

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

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.1rem; }

p { margin: 0; }
a { color: var(--color-primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Cards ───────────────────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.card-sm { padding: 1rem; }
.card-elevated {
    background: var(--color-surface-elevated);
    box-shadow: var(--shadow-sm);
}

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-family);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s, border-color 0.15s;
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
    background: var(--color-primary);
    color: #0d0b07;
    border-color: var(--color-primary);
    font-weight: 600;
}
.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}
.btn-ghost:hover:not(:disabled) {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border-color: rgba(210, 158, 58, 0.28);
}

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8125rem; }

/* ── Form controls ───────────────────────────────────────────────────── */
.input, .select {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.875rem;
    font-family: var(--font-family);
    padding: 0.5rem 0.75rem;
    width: 100%;
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none;
}

.input:focus, .select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.input::placeholder { color: var(--color-text-muted); }
.select option { background: var(--color-surface-elevated); }

/* ── Badges ──────────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-primary { background: var(--color-primary-glow);     color: var(--color-primary-light); }
.badge-success { background: var(--color-success-bg);       color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg);       color: var(--color-warning); }
.badge-danger  { background: var(--color-danger-bg);        color: var(--color-danger); }
.badge-info    { background: var(--color-info-bg);          color: var(--color-info); }
.badge-neutral { background: rgba(255, 255, 255, 0.06);     color: var(--color-text-secondary); }

/* ── Tables ──────────────────────────────────────────────────────────── */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th {
    text-align: left;
    padding: 0.625rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border-subtle);
    color: var(--color-text);
    vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tbody tr {
    transition: background 0.1s;
    cursor: pointer;
}

.data-table tbody tr:hover { background: var(--color-surface-hover); }

/* ── Page headers ────────────────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.page-title {
    font-size: 1.625rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text);
}

.page-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}

/* ── Stat cards ──────────────────────────────────────────────────────── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: box-shadow 0.2s, border-top-color 0.2s;
    border-top: 2px solid transparent;
}

.stat-card:hover {
    border-top-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.03em;
    line-height: 1;
}

.stat-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

/* ── Loading skeleton ────────────────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg,
        var(--color-surface) 25%,
        var(--color-surface-elevated) 50%,
        var(--color-surface) 75%);
    background-size: 400% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0%   { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* ── Search bar ──────────────────────────────────────────────────────── */
.search-bar {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1.25rem;
}

.search-bar .input { flex: 1; }

/* ── Empty state ─────────────────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--color-text-secondary);
}

.empty-state-icon    { font-size: 3rem; margin-bottom: 1rem; opacity: 0.4; }
.empty-state-title   { font-size: 1rem; font-weight: 600; color: var(--color-text-secondary); margin-bottom: 0.25rem; }
.empty-state-desc    { font-size: 0.875rem; color: var(--color-text-muted); }

/* ── Split panel layout ──────────────────────────────────────────────── */
.split-panel {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.25rem;
    height: calc(100vh - 8rem);
}

.panel-list {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.panel-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow-y: auto;
    padding: 1.25rem;
}

.list-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--color-border-subtle);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: background 0.1s, color 0.1s;
}

.list-item:last-child { border-bottom: none; }
.list-item:hover { background: var(--color-surface-hover); color: var(--color-text); }
.list-item.selected {
    background: var(--color-primary-glow);
    color: var(--color-primary-light);
    border-left: 2px solid var(--color-primary);
}

/* ── Tabs ────────────────────────────────────────────────────────────── */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1.25rem;
}

.tab-btn {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-family: var(--font-family);
    transition: color 0.15s, border-color 0.15s;
    margin-bottom: -1px;
}

.tab-btn:hover { color: var(--color-text); }
.tab-btn.active {
    color: var(--color-primary-light);
    border-bottom-color: var(--color-primary);
}

/* ── Property grid ───────────────────────────────────────────────────── */
.prop-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0;
    font-size: 0.875rem;
}

.prop-row { display: contents; }

.prop-row > .prop-name,
.prop-row > .prop-value {
    padding: 0.625rem 0.875rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

.prop-row:last-child > .prop-name,
.prop-row:last-child > .prop-value { border-bottom: none; }

.prop-name {
    font-weight: 500;
    color: var(--color-text-secondary);
    white-space: nowrap;
    padding-right: 2rem;
    font-size: 0.8125rem;
}

.prop-value {
    color: var(--color-text);
    word-break: break-word;
}

/* ── Scrollbar ───────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(210, 158, 58, 0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(210, 158, 58, 0.42); }

/* ── Utility ─────────────────────────────────────────────────────────── */
.text-muted      { color: var(--color-text-muted); }
.text-secondary  { color: var(--color-text-secondary); }
.text-sm         { font-size: 0.8125rem; }
.text-mono       { font-family: var(--font-mono); }
.mt-1            { margin-top: 0.5rem; }
.mt-2            { margin-top: 1rem; }
.flex            { display: flex; }
.flex-col        { flex-direction: column; }
.gap-1           { gap: 0.5rem; }
.gap-2           { gap: 1rem; }
.items-center    { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full          { width: 100%; }

/* ── System / non-clickable table rows ──────────────────────────────── */
.data-table tbody tr.row-system { cursor: default; }
.data-table tbody tr.row-system td { opacity: 0.55; }
.data-table tbody tr.row-system:hover td { opacity: 0.85; }