:root {
    --primary: #0f3460;
    --primary-light: #1a5276;
    --accent: #3498db;
    --sem-completo: #f1c40f;
    --sem-proceso: #27ae60;
    --sem-critico: #e74c3c;
    --bg: #f8f9fa;
    --surface: #ffffff;
    --text: #1a1a2e;
    --text-muted: #6c757d;
    --border: #dee2e6;
    --sidebar-width: 260px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--primary);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    display: flex; flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}
.sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar .nav-link {
    color: rgba(255,255,255,0.7);
    padding: 10px 20px;
    display: flex; align-items: center; gap: 10px;
    font-size: 13px;
    transition: all 0.2s;
}
.sidebar .nav-link:hover { color: #fff; background: rgba(255,255,255,0.1); }
.sidebar .nav-link.active { color: #fff; background: rgba(255,255,255,0.15); border-left: 3px solid var(--accent); }
.sidebar .nav-link i { width: 20px; text-align: center; }
.sidebar-footer { margin-top: auto; padding: 15px 20px; border-top: 1px solid rgba(255,255,255,0.1); }

/* Content */
.content { margin-left: var(--sidebar-width); min-height: 100vh; }

/* Login */
.login-page {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #0f3460 0%, #1a5276 100%);
}
.login-card {
    background: var(--surface);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    width: 100%; max-width: 400px;
}

/* Cards */
.stat-card {
    background: var(--surface);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border-left: 4px solid var(--primary);
}
.stat-card.amarillo { border-left-color: var(--sem-completo); }
.stat-card.verde { border-left-color: var(--sem-proceso); }
.stat-card.rojo { border-left-color: var(--sem-critico); }
.stat-number { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; }

/* Semáforo chips */
.chip-amarillo { background: var(--sem-completo); color: #1a1a2e; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.chip-verde { background: var(--sem-proceso); color: #fff; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.chip-rojo { background: var(--sem-critico); color: #fff; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }

/* Estado chip */
.chip-activo { background: #d4edda; color: #155724; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.chip-inactivo { background: #e9ecef; color: #6c757d; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }

/* Tables */
.table-ever { background: var(--surface); border-radius: 8px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.table-ever th { background: #e8edf5; color: var(--text); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.table-ever td { vertical-align: middle; font-size: 13px; }
.table-ever tr:hover td { background: #f0f4ff; }

/* Tabs */
.nav-tabs-ever .nav-link { color: var(--text-muted); border: none; padding: 10px 20px; }
.nav-tabs-ever .nav-link.active { color: var(--primary); border-bottom: 2px solid var(--primary); font-weight: 600; }

/* Progreso IA */
.progress-ia { height: 24px; border-radius: 12px; }
.progress-ia .bar { transition: width 0.5s ease; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { width: 0; overflow: hidden; }
    .content { margin-left: 0; }
}