:root {
    --primary: #1a5276;
    --primary-light: #2980b9;
    --primary-dark: #0e3a53;
    --secondary: #e67e22;
    --secondary-light: #f39c12;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    --dark: #2c3e50;
    --light: #ecf0f1;
    --white: #ffffff;
    --gray: #95a5a6;
    --gray-light: #bdc3c7;
    --sidebar-width: 260px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f5f6fa; color: #333; min-height: 100vh; }
a { text-decoration: none; color: inherit; }

.login-page { display: flex; min-height: 100vh; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)); }
.login-card { background: var(--white); border-radius: 12px; padding: 40px; width: 100%; max-width: 420px; box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
.login-card h1 { text-align: center; color: var(--primary); margin-bottom: 8px; font-size: 1.6rem; }
.login-card .subtitle { text-align: center; color: var(--gray); margin-bottom: 30px; font-size: 0.9rem; }
.login-card .logo-text { text-align: center; color: var(--secondary); font-size: 2rem; font-weight: 700; margin-bottom: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; color: var(--dark); font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 14px; border: 2px solid var(--light); border-radius: 8px; font-size: 0.95rem; transition: border-color 0.3s; outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary-light); }

.btn { display: inline-block; padding: 10px 20px; border: none; border-radius: 8px; font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: all 0.3s; text-align: center; }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-light); }
.btn-secondary { background: var(--secondary); color: var(--white); }
.btn-secondary:hover { background: var(--secondary-light); }
.btn-success { background: var(--success); color: var(--white); }
.btn-success:hover { opacity: 0.9; }
.btn-danger { background: var(--danger); color: var(--white); }
.btn-danger:hover { opacity: 0.9; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }
.btn-block { display: block; width: 100%; }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }

.layout { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-width); background: linear-gradient(180deg, var(--primary-dark), var(--primary)); color: var(--white); position: fixed; top: 0; left: 0; height: 100vh; overflow-y: auto; z-index: 100; transition: transform 0.3s; }
.sidebar-header { padding: 20px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header h2 { font-size: 1.1rem; margin-bottom: 4px; }
.sidebar-header .role-badge { display: inline-block; background: var(--secondary); padding: 2px 12px; border-radius: 20px; font-size: 0.75rem; text-transform: uppercase; }
.sidebar-nav { padding: 15px 0; }
.sidebar-nav a { display: flex; align-items: center; padding: 12px 20px; color: rgba(255,255,255,0.8); transition: all 0.3s; font-size: 0.95rem; border-left: 3px solid transparent; }
.sidebar-nav a:hover, .sidebar-nav a.active { background: rgba(255,255,255,0.1); color: var(--white); border-left-color: var(--secondary); }
.sidebar-nav a .icon { margin-right: 12px; width: 20px; text-align: center; }
.sidebar-footer { position: absolute; bottom: 0; width: 100%; padding: 15px 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.sidebar-footer a { color: rgba(255,255,255,0.8); display: flex; align-items: center; gap: 8px; font-size: 0.9rem; }
.sidebar-footer a:hover { color: var(--white); }

.main-content { flex: 1; margin-left: var(--sidebar-width); padding: 0; }
.topbar { background: var(--white); padding: 15px 30px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 4px rgba(0,0,0,0.05); }
.topbar h1 { font-size: 1.3rem; color: var(--dark); }
.topbar .user-info { display: flex; align-items: center; gap: 8px; color: var(--gray); }
.content { padding: 30px; }

.card { background: var(--white); border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); margin-bottom: 20px; overflow: hidden; }
.card-header { padding: 15px 20px; border-bottom: 1px solid var(--light); display: flex; justify-content: space-between; align-items: center; }
.card-header h3 { color: var(--dark); font-size: 1.1rem; }
.card-body { padding: 20px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 30px; }
.stat-card { background: var(--white); border-radius: 12px; padding: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); display: flex; align-items: center; gap: 15px; }
.stat-icon { width: 50px; height: 50px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; }
.stat-icon.blue { background: rgba(52,152,219,0.15); color: var(--info); }
.stat-icon.green { background: rgba(39,174,96,0.15); color: var(--success); }
.stat-icon.orange { background: rgba(243,156,18,0.15); color: var(--warning); }
.stat-icon.red { background: rgba(231,76,60,0.15); color: var(--danger); }
.stat-info h4 { font-size: 1.6rem; color: var(--dark); }
.stat-info p { color: var(--gray); font-size: 0.85rem; }

table { width: 100%; border-collapse: collapse; }
table th { background: var(--light); padding: 12px 15px; text-align: left; font-size: 0.85rem; font-weight: 600; color: var(--dark); text-transform: uppercase; letter-spacing: 0.5px; }
table td { padding: 12px 15px; border-bottom: 1px solid #f0f0f0; font-size: 0.9rem; }
table tr:hover { background: #fafbfc; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.badge-success { background: rgba(39,174,96,0.15); color: var(--success); }
.badge-warning { background: rgba(243,156,18,0.15); color: var(--warning); }
.badge-danger { background: rgba(231,76,60,0.15); color: var(--danger); }
.badge-info { background: rgba(52,152,219,0.15); color: var(--info); }

.alert { padding: 12px 20px; border-radius: 8px; margin-bottom: 20px; font-size: 0.9rem; }
.alert-success { background: rgba(39,174,96,0.1); color: var(--success); border: 1px solid rgba(39,174,96,0.3); }
.alert-error { background: rgba(231,76,60,0.1); color: var(--danger); border: 1px solid rgba(231,76,60,0.3); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-actions { margin-top: 20px; display: flex; gap: 10px; }
.form-check { display: flex; align-items: center; gap: 8px; }
.form-check input[type="checkbox"] { width: auto; }

#map { width: 100%; height: 500px; border-radius: 12px; border: 2px solid var(--light); }

.tracking-panel { display: grid; grid-template-columns: 300px 1fr; gap: 20px; }
.bus-list { max-height: 500px; overflow-y: auto; }
.bus-item { padding: 12px; border-bottom: 1px solid var(--light); cursor: pointer; transition: background 0.3s; }
.bus-item:hover { background: #f8f9fa; }
.bus-item .bus-placa { font-weight: 700; color: var(--primary); }
.bus-item .bus-conductor { color: var(--gray); font-size: 0.85rem; }
.bus-item .bus-status { margin-top: 4px; }

.driver-panel { max-width: 600px; margin: 0 auto; }
.driver-panel .service-card { text-align: center; padding: 30px; }
.driver-panel .service-card .big-icon { font-size: 3rem; margin-bottom: 15px; }
.driver-panel .gps-status { display: flex; align-items: center; justify-content: center; gap: 8px; margin: 15px 0; }
.driver-panel .gps-dot { width: 12px; height: 12px; border-radius: 50%; animation: pulse 1.5s infinite; }
.driver-panel .gps-dot.active { background: var(--success); }
.driver-panel .gps-dot.inactive { background: var(--danger); animation: none; }

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hamburger { display: none; background: none; border: none; font-size: 1.5rem; color: var(--dark); cursor: pointer; }

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .hamburger { display: block; }
    .form-row { grid-template-columns: 1fr; }
    .tracking-panel { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    #map { height: 350px; }
}