:root {
    --sidebar-bg: #1b1e24;
    --sidebar-text: #9a9fa8;
    --sidebar-text-active: #ffffff;
    --accent: #0f6e56;
    --accent-light: #e1f5ee;
    --danger: #a32d2d;
    --danger-light: #fcebeb;
    --warning: #854f0b;
    --warning-light: #faeeda;
    --bg: #f4f5f6;
    --card-bg: #ffffff;
    --border: #e2e4e7;
    --text: #24262b;
    --text-muted: #6b6f76;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

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

.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    flex-shrink: 0;
    padding: 24px 0;
}

.sidebar .brand {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    padding: 0 24px 24px;
    border-bottom: 1px solid #2c2f37;
    margin-bottom: 12px;
}

.sidebar nav a {
    display: block;
    padding: 10px 24px;
    color: var(--sidebar-text);
    font-size: 13.5px;
    border-left: 3px solid transparent;
}

.sidebar nav a:hover { color: #fff; text-decoration: none; background: #23262d; }

.sidebar nav a.active {
    color: var(--sidebar-text-active);
    border-left-color: var(--accent);
    background: #23262d;
    font-weight: 600;
}

.main { flex: 1; min-width: 0; }

.topbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 14px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar h1 { font-size: 18px; margin: 0; font-weight: 700; }

.content { padding: 28px; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 20px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 6px;
    padding: 16px 18px;
}

.stat-card .value { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-card .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); margin-top: 4px; }
.stat-card.warn { border-left-color: var(--warning); }
.stat-card.danger { border-left-color: var(--danger); }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); font-weight: 600; }
tr:hover td { background: #fafafa; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 4px; font-size: 12px; font-weight: 600; }
.badge-success { background: var(--accent-light); color: var(--accent); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-neutral { background: #eee; color: #555; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 5px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
}
.btn:hover { opacity: 0.9; text-decoration: none; }
.btn-outline { background: transparent; color: var(--accent); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

.alert { padding: 12px 16px; border-radius: 5px; margin-bottom: 18px; font-size: 13.5px; }
.alert-success { background: var(--accent-light); color: var(--accent); }
.alert-danger { background: var(--danger-light); color: var(--danger); }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; }
.toolbar input[type=text] { padding: 8px 11px; border: 1px solid var(--border); border-radius: 5px; min-width: 220px; }

.muted { color: var(--text-muted); }
.text-right { text-align: right; }