:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
    --sidebar-w: 240px;
    --header-h: 56px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    line-height: 1.5;
}

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

.sidebar {
    width: var(--sidebar-w);
    background: #1e293b;
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
}

.sidebar-logo {
    padding: 16px 20px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    border-bottom: 1px solid #334155;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-logo span { color: var(--primary); }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 0; }

.nav-section {
    padding: 8px 16px 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #475569;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    color: #94a3b8;
    text-decoration: none;
    border-radius: 6px;
    margin: 1px 8px;
    font-size: 13px;
    transition: all .15s;
}

.nav-item:hover { background: #334155; color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-item .icon { width: 16px; text-align: center; }

.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid #334155;
    font-size: 12px;
    color: #475569;
}

.main {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.header {
    height: var(--header-h);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-title { font-size: 16px; font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 12px; }

.avatar {
    width: 32px; height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 600; font-size: 13px;
    cursor: pointer;
}

.content { flex: 1; padding: 24px; }

/* ---- CARDS ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}

/* ---- STATS GRID ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-value { font-size: 28px; font-weight: 700; color: var(--text); }
.stat-label { font-size: 12px; color: var(--text-muted); }
.stat-card.red .stat-value { color: var(--danger); }
.stat-card.orange .stat-value { color: var(--warning); }
.stat-card.green .stat-value { color: var(--success); }
.stat-card.blue .stat-value { color: var(--primary); }

/* ---- ALERTS ---- */
.alerts-list { display: flex; flex-direction: column; gap: 8px; }

.alert-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 13px;
}

.alert-item.red { background: #fef2f2; border-left: 3px solid var(--danger); }
.alert-item.orange { background: #fffbeb; border-left: 3px solid var(--warning); }
.alert-item.green { background: #f0fdf4; border-left: 3px solid var(--success); }

.alert-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 4px;
}
.red .alert-dot { background: var(--danger); }
.orange .alert-dot { background: var(--warning); }
.green .alert-dot { background: var(--success); }

/* ---- TABLES ---- */
.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }

th {
    text-align: left;
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

tr:hover td { background: var(--bg); }

/* ---- BADGES ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
}
.badge-green { background: #dcfce7; color: #15803d; }
.badge-red { background: #fee2e2; color: #b91c1c; }
.badge-orange { background: #fef3c7; color: #b45309; }
.badge-blue { background: #dbeafe; color: #1d4ed8; }
.badge-gray { background: #f1f5f9; color: #475569; }

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all .15s;
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--bg); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* ---- FORMS ---- */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text);
    background: var(--bg-card);
    transition: border .15s;
}
.form-control:focus { outline: none; border-color: var(--primary); }
.form-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ---- SCORE BARS ---- */
.score-bar { display: flex; align-items: center; gap: 8px; }
.score-track { flex: 1; height: 6px; background: var(--border); border-radius: 3px; }
.score-fill { height: 100%; border-radius: 3px; }
.score-fill.good { background: var(--success); }
.score-fill.medium { background: var(--warning); }
.score-fill.poor { background: var(--danger); }

/* ---- LOGIN ---- */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

.login-box {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 40px;
    width: 380px;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
}

.login-logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 4px;
}

.login-logo span { color: var(--primary); }
.login-sub { color: var(--text-muted); font-size: 13px; margin-bottom: 28px; }

.alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 16px;
}

/* ---- PROGRESS ---- */
.progress-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.progress-item { margin-bottom: 12px; }
.progress-header { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: 12px; }
.progress-bar { height: 8px; background: var(--border); border-radius: 4px; }
.progress-fill { height: 100%; border-radius: 4px; background: var(--primary); }

/* ---- UTILITIES ---- */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 12px; }
.font-bold { font-weight: 700; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }