:root {
    color-scheme: dark;
    --bg: #0b1220;
    --panel: #111b2f;
    --panel-soft: #16243c;
    --text: #f3f6fb;
    --muted: #9aa7bd;
    --accent: #58a6ff;
    --accent-soft: rgba(88, 166, 255, 0.16);
    --border: rgba(255,255,255,0.08);
    --danger: #ff7675;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: linear-gradient(180deg, #09101d 0%, #0b1220 100%);
    color: var(--text);
}
.app-shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px 16px 40px;
}
.hero {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 20px;
}
.hero-side {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
}
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .08em; font-size: 12px; margin: 0 0 8px; }
h1 { margin: 0 0 8px; font-size: 36px; }
.subtitle { margin: 0; color: var(--muted); max-width: 640px; }
.hero-badge {
    background: var(--panel-soft);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 10px 14px;
    color: var(--muted);
}
.hero-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.secondary-button, .history-action-edit, .history-action-delete, .history-action-category {
    background: var(--panel-soft);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 14px;
    cursor: pointer;
}
.secondary-button:hover, .history-action-edit:hover, .history-action-delete:hover, .history-action-category:hover { border-color: var(--accent); }
.content { display: grid; gap: 20px; }
.cards-grid, .charts-grid { display: grid; gap: 16px; }
.cards-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.charts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.metric-card, .panel {
    background: rgba(17, 27, 47, 0.9);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 18px;
    backdrop-filter: blur(10px);
}
.metric-label, .panel-header p, .metric-caption { color: var(--muted); }
.metric-value { display: block; font-size: 28px; margin: 12px 0 6px; }
.panel-header h2 { margin: 0 0 6px; }
.panel-header p { margin: 0; }
.chart-wrap { height: 320px; margin-top: 14px; }
.history-list, .users-list { display: grid; gap: 12px; }
.history-item, .user-card {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
    background: var(--panel-soft);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px;
}
.user-card {
    width: 100%;
    color: var(--text);
    text-align: left;
    cursor: pointer;
}
.history-note, .user-card-title { font-weight: 600; margin-bottom: 6px; }
.history-meta, .user-card-meta { color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; }
.history-side { min-width: 300px; display: grid; gap: 10px; }
.history-amount { font-size: 20px; text-align: right; }
.history-actions-wrap { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.category-editor { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.history-category-select {
    min-width: 180px;
    background: #0d172a;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
}
.badge {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: #d6e9ff;
}
.empty-state {
    padding: 20px;
    text-align: center;
    border: 1px dashed var(--border);
    border-radius: 16px;
    color: var(--muted);
}
.hidden { display: none !important; }
@media (max-width: 900px) {
    .cards-grid, .charts-grid { grid-template-columns: 1fr; }
    .hero { flex-direction: column; }
    .hero-side { align-items: stretch; }
    .history-item, .user-card { flex-direction: column; }
    .history-side { min-width: 0; width: 100%; }
    .history-amount { text-align: left; }
    .history-actions-wrap, .category-editor { justify-content: flex-start; }
}


.period-switcher { display:flex; justify-content:space-between; align-items:center; gap:16px; }
.period-button.active { border-color: var(--accent); background: var(--accent-soft); }
.day-group-title { color: var(--muted); font-size: 14px; margin: 8px 2px 0; }
@media (max-width: 900px) { .period-switcher { flex-direction: column; align-items: stretch; } }