:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d29;
    --bg-card: #222639;
    --accent: #00d4aa;
    --accent-hover: #00f0c0;
    --red: #ff4757;
    --yellow: #ffa502;
    --green: #2ed573;
    --text: #e8e8e8;
    --text-muted: #8892b0;
    --border: #2d3348;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg-primary); color: var(--text); min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* SIDEBAR */
.sidebar { position: fixed; left: 0; top: 0; width: 220px; height: 100vh; background: var(--bg-secondary); border-right: 1px solid var(--border); padding: 20px 0; z-index: 100; }
.sidebar .logo { text-align: center; padding: 15px 20px 30px; border-bottom: 1px solid var(--border); margin-bottom: 10px; }
.sidebar .logo h2 { color: var(--accent); font-size: 1.3em; }
.sidebar .logo small { color: var(--text-muted); font-size: 0.75em; }
.sidebar nav a { display: flex; align-items: center; padding: 12px 25px; color: var(--text-muted); font-size: 0.9em; transition: all 0.2s; border-left: 3px solid transparent; }
.sidebar nav a:hover, .sidebar nav a.active { background: rgba(0,212,170,0.08); color: var(--accent); border-left-color: var(--accent); }
.sidebar nav a span { margin-left: 10px; }
.sidebar .user-info { position: absolute; bottom: 0; width: 100%; padding: 15px 20px; border-top: 1px solid var(--border); }
.sidebar .user-info small { color: var(--text-muted); }

/* MAIN */
.main { margin-left: 220px; padding: 30px; }
.page-title { font-size: 1.5em; margin-bottom: 25px; color: var(--text); }

/* CARDS */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-bottom: 25px; }
.stat-card { background: var(--bg-card); border-radius: 12px; padding: 20px; border: 1px solid var(--border); }
.stat-card .label { color: var(--text-muted); font-size: 0.8em; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.stat-card .value { font-size: 1.8em; font-weight: 700; }
.stat-card .value.green { color: var(--green); }
.stat-card .value.red { color: var(--red); }
.stat-card .value.yellow { color: var(--yellow); }
.stat-card .value.accent { color: var(--accent); }

/* TABLES */
.table-container { background: var(--bg-card); border-radius: 12px; border: 1px solid var(--border); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { background: rgba(0,212,170,0.1); color: var(--accent); font-size: 0.8em; text-transform: uppercase; letter-spacing: 1px; padding: 12px 15px; text-align: left; }
td { padding: 12px 15px; border-top: 1px solid var(--border); font-size: 0.9em; }
tr:hover { background: rgba(255,255,255,0.02); }
.badge { padding: 4px 10px; border-radius: 20px; font-size: 0.75em; font-weight: 600; }
.badge-green { background: rgba(46,213,115,0.15); color: var(--green); }
.badge-red { background: rgba(255,71,87,0.15); color: var(--red); }
.badge-yellow { background: rgba(255,165,2,0.15); color: var(--yellow); }
.badge-blue { background: rgba(0,212,170,0.15); color: var(--accent); }

/* BUTTONS */
.btn { padding: 8px 20px; border-radius: 8px; border: none; cursor: pointer; font-size: 0.9em; font-weight: 600; transition: all 0.2s; display: inline-block; }
.btn-primary { background: var(--accent); color: var(--bg-primary); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-danger { background: var(--red); color: white; }
.btn-sm { padding: 5px 12px; font-size: 0.8em; }
.btn-outline { background: transparent; border: 1px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: var(--bg-primary); }

/* FORMS */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; color: var(--text-muted); font-size: 0.85em; }
.form-group input, .form-group select { width: 100%; padding: 10px 15px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-primary); color: var(--text); font-size: 0.9em; }
.form-group input:focus { border-color: var(--accent); outline: none; }

/* LOGIN */
.login-container { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { background: var(--bg-card); padding: 40px; border-radius: 16px; border: 1px solid var(--border); width: 100%; max-width: 380px; }
.login-box h1 { text-align: center; color: var(--accent); margin-bottom: 5px; }
.login-box p { text-align: center; color: var(--text-muted); margin-bottom: 25px; font-size: 0.9em; }

/* ALERTS */
.alert { padding: 12px 18px; border-radius: 8px; margin-bottom: 15px; font-size: 0.9em; }
.alert-success { background: rgba(46,213,115,0.1); border: 1px solid var(--green); color: var(--green); }
.alert-error { background: rgba(255,71,87,0.1); border: 1px solid var(--red); color: var(--red); }

/* STRATEGY CARDS */
.strategy-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 15px; }
.strategy-card { background: var(--bg-card); border-radius: 12px; padding: 20px; border: 2px solid var(--border); transition: all 0.2s; }
.strategy-card.active { border-color: var(--accent); }
.strategy-card h3 { margin-bottom: 8px; }
.strategy-card .desc { color: var(--text-muted); font-size: 0.85em; margin-bottom: 12px; }
.strategy-card .meta { display: flex; gap: 15px; margin-bottom: 15px; }
.strategy-card .meta span { font-size: 0.8em; color: var(--text-muted); }

@media (max-width: 768px) {
    .sidebar { display: none; }
    .main { margin-left: 0; padding: 15px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}