:root {
    --azul-oscuro: #0f2544;
    --azul: #1a3d6d;
    --azul-claro: #2f6fb0;
    --dorado: #d4a836;
    --dorado-claro: #f0c862;
    --gris-claro: #f4f6f9;
    --texto: #1c2b3a;
    --blanco: #ffffff;
    --rojo: #c0392b;
    --verde: #2f9e58;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    color: var(--texto);
}

/* =========================================================
   FONDO "OFICINA CON COMPUTADORAS"
   Dibujado enteramente en CSS (gradientes + formas) para no
   depender de una imagen externa con derechos de autor.
   Simula escritorios, monitores y una ventana de oficina.
========================================================= */
body.bg-oficina {
    min-height: 100vh;
    background-color: #dfe7f0;
    background-image:
        /* ventana con cielo */
        linear-gradient(180deg, #bcd8ef 0%, #dfe7f0 40%),
        /* piso */
        linear-gradient(180deg, transparent 78%, #c9b89a 78%),
        /* pantallas de monitores (rectangulos oscuros) */
        repeating-linear-gradient(90deg,
            transparent 0, transparent 12vw,
            rgba(20,35,55,0.10) 12vw, rgba(20,35,55,0.10) 12vw + 6vw,
            transparent 18vw, transparent 24vw),
        /* escritorios */
        repeating-linear-gradient(90deg,
            transparent 0, transparent 10vw,
            rgba(90,70,40,0.12) 10vw, rgba(90,70,40,0.12) 10vw + 8vw,
            transparent 18vw, transparent 24vw);
    background-size: 100% 100%, 100% 100%, 100% 60%, 100% 25%;
    background-position: top, top, top 8vh left, bottom left;
    background-repeat: no-repeat, no-repeat, repeat-x, repeat-x;
    background-attachment: fixed;
}

.overlay-oscuro {
    min-height: 100vh;
    background: linear-gradient(180deg, rgba(15,37,68,0.88) 0%, rgba(15,37,68,0.80) 100%);
    display: flex;
    flex-direction: column;
}

/* Iconos de "monitores" decorativos usando SVG inline en el header */
.deco-monitores {
    display: flex;
    justify-content: center;
    gap: 14px;
    opacity: 0.55;
    margin-bottom: -4px;
}
.deco-monitores svg { width: 34px; height: 26px; }

/* =========================================================
   Layout general
========================================================= */
.contenedor {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 18px;
}

header.top-bar {
    background: rgba(15, 37, 68, 0.92);
    border-bottom: 3px solid var(--dorado);
    padding: 14px 0;
}
header.top-bar .contenedor {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.logo {
    color: var(--blanco);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo span.badge-rol {
    background: var(--dorado);
    color: var(--azul-oscuro);
    font-size: 0.65rem;
    padding: 3px 9px;
    border-radius: 10px;
    font-weight: 700;
    text-transform: uppercase;
}
nav.menu {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
nav.menu a {
    color: #dbe6f3;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.92rem;
    transition: background 0.15s;
}
nav.menu a:hover, nav.menu a.activo {
    background: var(--azul-claro);
    color: #fff;
}
nav.menu a.salir {
    background: var(--rojo);
    color: #fff;
}

main.contenido {
    flex: 1;
    padding: 28px 0 50px;
}

.card {
    background: var(--blanco);
    border-radius: 12px;
    box-shadow: 0 6px 22px rgba(0,0,0,0.18);
    padding: 24px;
    margin-bottom: 22px;
}

h1.titulo-pagina {
    color: #fff;
    font-size: 1.6rem;
    margin: 0 0 20px;
    text-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

/* =========================================================
   Formularios
========================================================= */
.form-grupo { margin-bottom: 16px; }
.form-grupo label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: var(--azul-oscuro);
}
.form-grupo input[type=text],
.form-grupo input[type=password],
.form-grupo input[type=number],
.form-grupo input[type=tel],
.form-grupo input[type=file],
.form-grupo select,
.form-grupo textarea {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid #cbd5e0;
    border-radius: 8px;
    font-size: 1rem;
    background: #fbfcfe;
}
.form-grupo textarea { min-height: 100px; resize: vertical; }
.form-grupo input:focus, .form-grupo select:focus, .form-grupo textarea:focus {
    outline: none;
    border-color: var(--azul-claro);
    box-shadow: 0 0 0 3px rgba(47,111,176,0.18);
}

/* Campo honeypot: invisible para humanos, presente en el DOM para bots */
.hp-field {
    position: absolute;
    left: -9999px;
    top: -9999px;
    height: 0;
    width: 0;
    overflow: hidden;
}

.btn {
    display: inline-block;
    background: var(--azul);
    color: #fff;
    border: none;
    padding: 12px 22px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, transform 0.1s;
}
.btn:hover { background: var(--azul-claro); }
.btn:active { transform: scale(0.98); }
.btn-dorado { background: var(--dorado); color: var(--azul-oscuro); }
.btn-dorado:hover { background: var(--dorado-claro); }
.btn-rojo { background: var(--rojo); }
.btn-rojo:hover { background: #e0473a; }
.btn-verde { background: var(--verde); }
.btn-sm { padding: 7px 14px; font-size: 0.85rem; }
.btn-block { width: 100%; text-align: center; }

.alerta {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 18px;
    font-size: 0.95rem;
}
.alerta-error { background: #fde2e1; color: #8a2f27; border: 1px solid #f3b3af; }
.alerta-ok { background: #e0f5e6; color: #1f6b3a; border: 1px solid #a9dfba; }
.alerta-info { background: #e3f0fb; color: #1c4c78; border: 1px solid #a9cdea; }

/* =========================================================
   Tarjetas de estadisticas (dashboard)
========================================================= */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-box {
    background: var(--blanco);
    border-radius: 12px;
    padding: 18px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.16);
    border-left: 5px solid var(--azul-claro);
}
.stat-box.dorado { border-left-color: var(--dorado); }
.stat-box.verde { border-left-color: var(--verde); }
.stat-box.rojo { border-left-color: var(--rojo); }
.stat-box .stat-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #6b7a8d;
    font-weight: 700;
    margin-bottom: 6px;
}
.stat-box .stat-valor {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--azul-oscuro);
}

/* =========================================================
   Grilla de productos
========================================================= */
.productos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 18px;
}
.producto-card {
    background: var(--blanco);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(0,0,0,0.16);
    display: flex;
    flex-direction: column;
}
.producto-media {
    height: 160px;
    background: #eef1f5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.producto-media img, .producto-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.producto-media .sin-media { color: #94a3b8; font-size: 0.85rem; }
.producto-body { padding: 14px; flex: 1; display: flex; flex-direction: column; }
.producto-body h3 { margin: 0 0 6px; font-size: 1.02rem; color: var(--azul-oscuro); }
.producto-cat {
    display: inline-block;
    background: #eaf1fa;
    color: var(--azul);
    font-size: 0.72rem;
    padding: 2px 9px;
    border-radius: 10px;
    margin-bottom: 8px;
    width: fit-content;
}
.producto-desc { font-size: 0.86rem; color: #56606e; flex: 1; margin-bottom: 10px; }
.producto-precio { font-weight: 700; color: var(--azul-oscuro); margin-bottom: 4px; }
.estado-pill {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 10px;
    text-transform: uppercase;
    width: fit-content;
}
.estado-disponible { background: #e0f5e6; color: #1f6b3a; }
.estado-vendido { background: #fde2e1; color: #8a2f27; }

/* =========================================================
   Tablas
========================================================= */
.tabla-wrap { overflow-x: auto; }
table.tabla {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}
table.tabla th, table.tabla td {
    padding: 10px 12px;
    border-bottom: 1px solid #e3e8ef;
    text-align: left;
}
table.tabla th {
    background: var(--azul-oscuro);
    color: #fff;
    font-size: 0.8rem;
    text-transform: uppercase;
}
table.tabla tr:hover { background: #f7fafc; }

.acciones { display: flex; gap: 6px; flex-wrap: wrap; }

.filtros { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.filtros select, .filtros input {
    padding: 9px 12px;
    border-radius: 8px;
    border: 1px solid #cbd5e0;
}

footer.pie {
    text-align: center;
    padding: 16px;
    color: #cfd9e6;
    font-size: 0.82rem;
}

/* =========================================================
   Login centrado
========================================================= */
.login-wrap {
    min-height: calc(100vh - 20px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-card {
    background: var(--blanco);
    border-radius: 14px;
    padding: 34px 30px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}
.login-card h1 {
    font-size: 1.35rem;
    color: var(--azul-oscuro);
    margin-top: 0;
    text-align: center;
}
.login-card .subt {
    text-align: center;
    color: #6b7a8d;
    font-size: 0.88rem;
    margin-bottom: 22px;
}

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 720px) {
    nav.menu { width: 100%; justify-content: center; }
    header.top-bar .contenedor { flex-direction: column; align-items: stretch; text-align: center; }
    h1.titulo-pagina { font-size: 1.3rem; text-align: center; }
    .card { padding: 16px; }
    table.tabla th, table.tabla td { padding: 8px; font-size: 0.82rem; }
}