:root {
    --azul: #1a237e;
    --azul-2: #283593;
    --verde: #2e7d32;
    --verde-claro: #e8f5e9;
    --rojo: #c62828;
    --naranja: #ef6c00;
    --naranja-claro: #fff3e0;
    --amarillo: #ffd54f;
    --gris: #f3f4f8;
    --borde: #d9dce8;
    --texto: #1f2430;
    --suave: #667085;
    --radio: 12px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.45;
    color: var(--texto);
    background: var(--gris);
}

h1, h2, h3 { margin: 0; line-height: 1.2; }
h2 { font-size: 1.4rem; margin-bottom: 14px; }
h3 { font-size: 1.1rem; margin-bottom: 10px; }

/* ---- Encabezado ---- */
.topbar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 20px;
    background: var(--azul);
    color: #fff;
    flex-wrap: wrap;
}
.logo { height: 56px; width: auto; border-radius: 6px; }
.titulos h1 { font-size: 1.3rem; font-weight: 800; }
.titulos p { margin: 2px 0 0; font-size: .85rem; opacity: .85; }
.user-chip {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    flex-wrap: wrap;
}
.btn-link {
    background: none; border: none; color: #c5cae9; cursor: pointer;
    text-decoration: underline; font: inherit; font-size: .85rem;
}
.btn-salir {
    background: #fff; color: var(--azul); border: none; border-radius: 8px;
    padding: 8px 14px; font: inherit; font-weight: 700; cursor: pointer;
}

/* ---- Botones y campos ---- */
.btn {
    font: inherit; font-weight: 600;
    padding: 11px 18px;
    border: 2px solid var(--azul);
    background: #fff; color: var(--azul);
    border-radius: 10px;
    cursor: pointer;
    transition: background .15s, color .15s;
}
.btn:hover { background: #e8eaf6; }
.btn-primario { background: var(--azul); color: #fff; }
.btn-primario:hover { background: var(--azul-2); }
.btn-peligro { border-color: var(--rojo); color: var(--rojo); }
.btn-peligro:hover { background: #ffebee; }
.btn-block { width: 100%; }
button:focus-visible, input:focus-visible, select:focus-visible, .seat:focus-visible {
    outline: 3px solid #ffb300;
    outline-offset: 2px;
}

label { display: block; font-weight: 600; margin: 12px 0 4px; font-size: .95rem; }
input, select {
    width: 100%;
    font: inherit;
    padding: 11px 12px;
    border: 1.5px solid var(--borde);
    border-radius: 10px;
    background: #fff;
}
input:focus, select:focus { border-color: var(--azul); }
.input-grande { font-size: 1.1rem; padding: 14px; }
.opcional { font-weight: 400; color: var(--suave); font-size: .85rem; }
.error { color: var(--rojo); font-weight: 600; min-height: 1.3em; margin: 8px 0; }
.ayuda { color: var(--suave); font-size: .85rem; margin: 6px 0 0; }

/* ---- Login ---- */
.login-card {
    max-width: 380px;
    margin: 48px auto;
    padding: 28px;
    background: #fff;
    border-radius: var(--radio);
    box-shadow: 0 6px 24px rgba(26, 35, 126, .12);
}

/* ---- App ---- */
main { max-width: 980px; margin: 0 auto; padding: 16px; }
.tabs { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.tab {
    font: inherit; font-weight: 700;
    padding: 10px 18px;
    border: none; border-radius: 999px;
    background: #e3e6f3; color: var(--azul);
    cursor: pointer;
}
.tab.active { background: var(--azul); color: #fff; }

.vista { background: #fff; border-radius: var(--radio); padding: 20px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }

.bus-switch { display: flex; gap: 10px; justify-content: center; margin-bottom: 16px; }
.bus-btn {
    flex: 1; max-width: 200px;
    font: inherit; font-size: 1.15rem; font-weight: 800;
    padding: 14px;
    border: 2px solid var(--azul); border-radius: 12px;
    background: #fff; color: var(--azul); cursor: pointer;
}
.bus-btn.active { background: var(--azul); color: #fff; }

.stats { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 12px; }
.stat {
    background: var(--gris); border-radius: 10px; padding: 8px 16px; text-align: center; min-width: 110px;
}
.stat b { display: block; font-size: 1.25rem; }
.stat span { font-size: .8rem; color: var(--suave); }

.leyenda { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; font-size: .85rem; color: var(--suave); margin-bottom: 14px; }
.dot { display: inline-block; width: 14px; height: 14px; border-radius: 4px; vertical-align: -2px; margin-right: 4px; border: 1.5px solid #9aa0b5; }
.dot.libre { background: #fff; }
.dot.pendiente { background: var(--naranja); border-color: var(--naranja); }
.dot.pagado { background: var(--verde); border-color: var(--verde); }
.dot.llanta { background: var(--amarillo); border-color: #c9a400; }

/* ---- Bus ---- */
.bus {
    max-width: 420px;
    margin: 0 auto;
    padding: 14px;
    background: #eef0f8;
    border: 3px solid var(--azul);
    border-radius: 28px 28px 14px 14px;
}
.bus-frente {
    text-align: center; font-size: .8rem; font-weight: 700; color: var(--azul);
    background: #fff; border-radius: 8px; padding: 6px; margin-bottom: 12px;
}
.bus-grid { display: grid; grid-template-columns: 1fr 1fr 26px 1fr 1fr; gap: 8px; }
.seat {
    font: inherit;
    min-height: 58px;
    padding: 4px 2px;
    border: 2px solid #9aa0b5;
    border-radius: 10px;
    background: #fff; color: var(--texto);
    cursor: pointer;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    line-height: 1.1;
}
.seat b { font-size: 1.05rem; }
.seat small { font-size: .65rem; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 0 2px; }
.seat:hover { transform: translateY(-1px); box-shadow: 0 3px 8px rgba(0,0,0,.15); }
.seat.llanta { background: var(--amarillo); border-color: #c9a400; }
.seat.pendiente { background: var(--naranja); border-color: var(--naranja); color: #fff; }
.seat.pagado { background: var(--verde); border-color: var(--verde); color: #fff; }
.pasillo { background: transparent; }
.seat.sel { box-shadow: 0 0 0 4px var(--azul); transform: scale(.96); background: #c5cae9; border-color: var(--azul); color: var(--azul); }

.barra-sel {
    position: sticky; bottom: 12px; z-index: 50;
    margin: 16px auto 0; max-width: 560px;
    display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap;
    padding: 12px 16px;
    background: #fff; border: 2px solid var(--azul); border-radius: 14px;
    box-shadow: 0 8px 24px rgba(26, 35, 126, .25);
}
.barra-botones { display: flex; gap: 8px; flex-wrap: wrap; }

.acciones { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.acciones.izq { justify-content: flex-start; margin-top: 0; align-items: center; }
.acciones select { width: auto; }

/* ---- Tarjetas y listas ---- */
.card { background: #fff; border: 1px solid var(--borde); border-radius: var(--radio); padding: 16px; margin-bottom: 16px; }
.vista > .card:last-child { margin-bottom: 0; }
.persona {
    border: 1.5px solid var(--borde); border-radius: var(--radio);
    padding: 14px; margin-top: 12px;
    display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap;
}
.persona p { margin: 2px 0; color: var(--suave); font-size: .9rem; }
.persona strong { font-size: 1.05rem; }
.etiqueta { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .78rem; font-weight: 700; color: #fff; }
.etiqueta.pagado { background: var(--verde); }
.etiqueta.pendiente { background: var(--naranja); }

.tabla { width: 100%; border-collapse: collapse; font-size: .92rem; }
.tabla th { background: var(--azul); color: #fff; text-align: left; padding: 8px; }
.tabla td { padding: 8px; border-bottom: 1px solid var(--borde); }
.tabla .num { text-align: right; font-variant-numeric: tabular-nums; }
.tabla-wrap { overflow-x: auto; }

.user-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 10px; }
.user-list { list-style: none; padding: 0; margin: 12px 0 0; }
.user-list li { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px dashed var(--borde); gap: 8px; }

/* ---- Ventana ---- */
dialog {
    border: none; border-radius: 16px; padding: 0;
    width: min(560px, 94vw);
    max-height: 92vh;
    box-shadow: 0 12px 40px rgba(0,0,0,.3);
}
dialog::backdrop { background: rgba(10, 15, 50, .55); }
#modal-body { padding: 22px; }
.modal-head { display: flex; justify-content: space-between; align-items: start; gap: 10px; margin-bottom: 8px; }
.cerrar { background: none; border: none; font-size: 1.8rem; line-height: 1; cursor: pointer; color: var(--suave); }
.costo { color: var(--azul); font-weight: 700; margin: 0 0 6px; }
.datos p { margin: 5px 0; }
.resumen-pago { display: flex; gap: 8px; margin: 12px 0; flex-wrap: wrap; }
.resumen-pago div { flex: 1; min-width: 120px; background: var(--gris); border-radius: 10px; padding: 8px 12px; }
.resumen-pago span { display: block; font-size: .78rem; color: var(--suave); }
.resumen-pago b { font-size: 1.1rem; }
.resumen-pago .saldo b { color: var(--naranja); }
.resumen-pago .saldo.ok b { color: var(--verde); }
.historial { background: var(--gris); border-radius: 10px; padding: 8px 12px; margin: 10px 0; font-size: .9rem; }
.historial ul { margin: 6px 0 0; padding-left: 18px; }
.historial small { color: var(--suave); }
.sep { border: none; border-top: 1px solid var(--borde); margin: 16px 0; }
.metodos { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.metodos label {
    margin: 0; font-weight: 600; display: flex; align-items: center; gap: 6px;
    border: 1.5px solid var(--borde); border-radius: 10px; padding: 8px 12px; cursor: pointer;
}
.metodos input { width: auto; margin: 0; }
.fila-botones { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
details { margin-top: 12px; }
summary { cursor: pointer; font-weight: 700; color: var(--azul); }

/* Concepto al inscribir */
.concepto {
    background: #e8eaf6; border-left: 4px solid var(--azul); border-radius: 10px;
    padding: 10px 14px; margin: 4px 0 12px;
    display: flex; flex-direction: column; gap: 2px;
}
.concepto span { font-size: .78rem; color: var(--suave); text-transform: uppercase; letter-spacing: .04em; }
.concepto b { font-size: 1.1rem; color: var(--azul); }
.concepto small { color: var(--suave); }

/* Cuadre */
.rapidos { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.rapidos .btn { padding: 8px 14px; }
.cuadre-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; align-items: end; }
.cuadre-botones { grid-column: 1 / -1; display: flex; gap: 10px; flex-wrap: wrap; }
.cuadre-totales .total b { color: var(--verde); }
.tabla tfoot td { border-top: 2px solid var(--azul); background: var(--gris); }
.tabla small { color: var(--suave); }
#cuadre-resultado h3 { margin-top: 6px; }
@media (max-width: 760px) { .cuadre-form { grid-template-columns: 1fr 1fr; } }

.clave-wrap { position: relative; }
.clave-wrap input { padding-right: 48px; }
.ojo {
    position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: none; border: none; border-radius: 8px;
    color: var(--suave); cursor: pointer;
}
.ojo:hover { background: var(--gris); color: var(--azul); }

.toast {
    position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px);
    background: #263238; color: #fff; padding: 12px 20px; border-radius: 10px;
    opacity: 0; pointer-events: none; transition: all .25s; z-index: 2000; max-width: 90vw;
}
.toast.ver { opacity: 1; transform: translate(-50%, 0); }
.toast.mal { background: var(--rojo); }

@media (max-width: 640px) {
    .user-form { grid-template-columns: 1fr; }
    .titulos h1 { font-size: 1.1rem; }
    .seat { min-height: 52px; }
}