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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --accent: #e8732a;
  --accent2: #f5a623;
  --text: #e8e8e8;
  --text-muted: #8a8fa8;
  --border: #2e3348;
  --danger: #e74c3c;
  --success: #2ecc71;
  --warn: #f39c12;
}

body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar { width: 200px; min-height: 100vh; background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 16px 0; position: fixed; top: 0; left: 0; }
.nav-logo { font-size: 1.1rem; font-weight: 700; padding: 8px 20px 20px; color: var(--accent); }
.sidebar a { display: block; padding: 10px 20px; color: var(--text-muted); text-decoration: none; font-size: .9rem; transition: all .15s; }
.sidebar a:hover, .sidebar a.active { color: var(--text); background: var(--surface2); border-left: 3px solid var(--accent); }
.nav-spacer { flex: 1; }

/* Content */
.content { margin-left: 200px; flex: 1; padding: 28px 32px; }
.page-title { font-size: 1.4rem; font-weight: 600; margin-bottom: 24px; color: var(--text); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.card-label { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 6px; }
.card-value { font-size: 1.6rem; font-weight: 700; color: var(--text); }
.card-value.danger { color: var(--danger); }
.card-value.warn { color: var(--warn); }
.card-value.success { color: var(--success); }

/* Tables */
.table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th { background: var(--surface2); padding: 10px 14px; text-align: left; color: var(--text-muted); font-weight: 500; }
td { padding: 10px 14px; border-top: 1px solid var(--border); }
tr:hover td { background: var(--surface2); }

/* Forms */
.form-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; align-items: flex-end; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: .78rem; color: var(--text-muted); }
input, select, textarea { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 6px; font-size: .88rem; }
input:focus, select:focus { outline: none; border-color: var(--accent); }

/* Buttons */
.btn { padding: 8px 18px; border: none; border-radius: 6px; font-size: .88rem; cursor: pointer; font-weight: 500; }
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent2); }
.btn-sm { padding: 4px 10px; font-size: .78rem; }
.btn-danger { background: var(--danger); color: white; }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: .72rem; font-weight: 600; }
.badge-warn { background: rgba(243,156,18,.2); color: var(--warn); }
.badge-danger { background: rgba(231,76,60,.2); color: var(--danger); }
.badge-success { background: rgba(46,204,113,.2); color: var(--success); }

/* Alerts */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: .88rem; }
.alert-danger { background: rgba(231,76,60,.15); border: 1px solid rgba(231,76,60,.3); color: #ff8a7a; }
.alert-success { background: rgba(46,204,113,.15); border: 1px solid rgba(46,204,113,.3); color: #7eeaa8; }
.alert-info { background: rgba(52,152,219,.15); border: 1px solid rgba(52,152,219,.3); color: #7ec8f5; }

/* Section */
.section { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.section-title { font-size: .95rem; font-weight: 600; margin-bottom: 14px; color: var(--text); }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 40px; width: 320px; text-align: center; }
.login-logo { font-size: 3rem; margin-bottom: 10px; }
.login-box h1 { margin-bottom: 24px; font-size: 1.3rem; }
.login-box input { width: 100%; margin-bottom: 12px; }
.login-box button { width: 100%; }
.error { color: var(--danger); margin-bottom: 12px; font-size: .88rem; }

/* Chart container */
.chart-box { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.chart-box canvas { max-height: 300px; }