:root {
    --bg-app: #0f172a;
    --sidebar-bg: #1e293b;
    --card-bg: rgba(255, 255, 255, 0.05);
    --accent: #38bdf8;
    --text-main: #f1f5f9;
    --seat-empty: #334155;
    --seat-full: #ef4444;
}

/* Arreglo global para que nada se salga de la pantalla */
* { box-sizing: border-box; }

body { 
    margin: 0; 
    font-family: 'Outfit', sans-serif; 
    background-color: var(--bg-app); 
    color: var(--text-main);
    height: 100vh;
    overflow: hidden; /* Evita el scroll general que descuadra todo */
}

.app { 
    display: flex; 
    height: 100vh; 
    width: 100vw;
}

/* Sidebar corregida */
.sidebar { 
    width: 320px; 
    min-width: 320px;
    background: var(--sidebar-bg); 
    border-right: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
}

.sidebar-header { 
    padding: 25px; 
    background: #020617; 
}

.sidebar-header h1 { 
    font-size: 1.1rem; 
    color: var(--accent); 
    letter-spacing: 1px; 
    margin: 0;
}

#busSearch { 
    background: #334155; 
    border: 1px solid #475569; 
    color: white;
    padding: 12px; 
    border-radius: 8px; 
    width: 100%; 
    margin-top: 15px;
}

/* Lista de buses con scroll independiente para no empujar el layout */
.bus-list { 
    padding: 15px; 
    overflow-y: auto; 
    flex: 1;
}

/* Arreglo de los links "pochos" */
.bus-item { 
    background: var(--card-bg); 
    border: 1px solid rgba(255,255,255,0.05);
    padding: 15px; 
    border-radius: 12px; 
    margin-bottom: 10px;
    display: flex; 
    flex-direction: column;
    text-decoration: none; /* Adiós al subrayado azul */
    color: #94a3b8; 
    transition: 0.3s;
}

.bus-item .route {
    font-weight: 800;
    color: var(--text-main);
}

.bus-item:hover { 
    background: rgba(56, 189, 248, 0.1); 
    border-color: var(--accent); 
}

.bus-item.active { 
    background: var(--accent); 
    color: #0f172a; /* Texto oscuro para que se lea sobre el azul */
}

.bus-item.active .route, 
.bus-item.active .details { 
    color: #0f172a; 
}

/* Main Viewport */
.viewport { 
    flex: 1; 
    display: flex; 
    flex-direction: column; 
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
    height: 100vh;
    overflow: hidden;
}

.top-nav { 
    padding: 30px 50px; 
    border-bottom: 1px solid rgba(255,255,255,0.05); 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
}

/* Área del bus con scroll interno para que no se corte por abajo */
.bus-area {
    flex: 1;
    overflow-y: auto;
    padding: 40px;
    display: flex;
    align-items: flex-start;
}

.bus-exterior { 
    background: #1e293b; 
    border: 3px solid #475569; 
    border-radius: 60px 60px 25px 25px;
    width: 360px; 
    padding: 50px 25px; 
    box-shadow: 0 50px 100px -20px rgba(0,0,0,0.5);
    margin: 0 auto 50px auto; /* El margen inferior evita que choque al final */
}

/* Rejilla de asientos - Reparada */
.seats-container { 
    display: grid; 
    grid-template-columns: repeat(2, 45px) 25px repeat(2, 45px); 
    gap: 12px; 
    justify-content: center; 
}

.seat-wrapper {
    display: contents; /* Clave para que el div del PHP no rompa el grid */
}

.corridor {
    grid-column: 3;
}

.seat { 
    width: 45px; 
    height: 48px; 
    border-radius: 8px; 
    font-size: 12px;
    display: flex; 
    align-items: center; 
    justify-content: center; 
    cursor: pointer;
    transition: 0.2s; 
    position: relative; 
    border-bottom: 4px solid rgba(0,0,0,0.3);
}

.empty { 
    background: var(--seat-empty); 
    color: #94a3b8; 
    border: 1px solid #475569; 
}

.occupied { 
    background: linear-gradient(145deg, #ef4444, #b91c1c); 
    color: white; 
    border: 1px solid #991b1b;
}

.seat:hover { 
    transform: scale(1.1) translateY(-2px); 
    filter: brightness(1.2); 
}

/* Tooltip */
.label { 
    position: absolute; 
    bottom: 110%; 
    left: 50%;
    transform: translateX(-50%);
    background: #f8fafc; 
    color: #0f172a; 
    padding: 5px 10px; 
    border-radius: 6px; 
    font-size: 11px; 
    font-weight: bold;
    display: none; 
    box-shadow: 0 10px 15px rgba(0,0,0,0.3); 
    z-index: 10;
    pointer-events: none;
}

.seat:hover .label { display: block; }

/* Ocupación corregida */
.occupancy { 
    height: 6px; 
    background: rgba(0,0,0,0.3); 
    border-radius: 3px; 
    margin-top: 8px; 
    overflow: hidden; 
    width: 100%;
}

.occupancy .bar { 
    height: 100%; 
    background: var(--accent); 
}

.bus-item.active .bar {
    background: #0f172a;
}