:root {
    --bg: #0e1116;
    --bg-elevated: #161b22;
    --border: #262c36;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #4f8cff;
    --green: #3fb950;
    --red: #f85149;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

code {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    font-size: 0.9em;
}

.topbar {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 10;
}

.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    font-size: 1.05rem;
}

.nav {
    display: flex;
    gap: 18px;
    flex: 1;
}

.nav a {
    color: var(--text-muted);
    font-size: 0.95rem;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
}

.nav a.active, .nav a:hover {
    color: var(--text);
    border-bottom-color: var(--accent);
}

.logout {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.logout:hover {
    color: var(--text);
}

.content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}

.select, .input {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.9rem;
}

.period-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px;
}

.period-tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.88rem;
}

.period-tab.active {
    background: var(--accent);
    color: #fff;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 18px;
}

.card-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 6px;
}

.card-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.card-sub {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

.positive { color: var(--green); }
.negative { color: var(--red); }

.chart-container {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
}

.table-wrap {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 600px;
}

.table th, .table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
}

.table th:hover {
    color: var(--text);
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.pagination {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 16px;
}

.btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 0.88rem;
}

.btn:hover {
    border-color: var(--accent);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.empty-state {
    color: var(--text-muted);
    text-align: center;
    padding: 60px 20px;
}

.hint {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-top: 16px;
}

.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    max-width: 420px;
    text-align: center;
}

.login-emoji {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.login-card p {
    color: var(--text-muted);
    line-height: 1.5;
}

.status-active { color: var(--green); }
.status-inactive { color: var(--text-muted); }

@media (max-width: 640px) {
    .topbar-inner { gap: 12px; }
    .nav { gap: 12px; }
    .content { padding: 16px; }
}