:root {
    --color-fondo: #f4f4f4;
    --color-texto: #333333;
    --color-primario: #e53935; /* Rojo principal */
    --color-primario-oscuro: #b71c1c; /* Nuevo: Rojo oscuro para botones/focus */
    --color-secundario: #555555; /* Gris oscuro */
    --color-blanco: #ffffff;
    --fuente-principal: Arial, sans-serif;
    --fuente-alternativa: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
    --color-borde-input: #e6e6ea; /* Unificado */
    --color-shadow-primario: rgba(183, 28, 28, 0.12);
}

/* ----------------------------------------------------- */
/* 0. RESET Y ESTILOS BASE */
/* ----------------------------------------------------- */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--fuente-principal);
    background-color: var(--color-fondo);
    color: var(--color-texto);
    cursor: default;
}

/* Unificación de cursores y user-select */
a, a *, button, button *, .pag-link {
    cursor: pointer;
}

input[type="text"],
input[type="number"],
input[type="search"],
input[type="email"],
input[type="password"],
textarea,
select {
    cursor: text;
    user-select: text;
}

h2, h3 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5em;
    color: var(--color-secundario);
    user-select: none;
}

/* ----------------------------------------------------- */
/* 1. HEADER Y NAVEGACIÓN */
/* ----------------------------------------------------- */

header {
    background-color: var(--color-blanco);
    padding: 8px 30px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo {
    height: clamp(50px, 7vw, 100px);
    width: auto;
    display: block;
    background: rgba(255,255,255,0.9);
    padding: 6px;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.15);
    margin-right: 15px;
}

.nombre-web {
    font-size: 26px;
    font-weight: 900;
    color: var(--color-secundario);
    letter-spacing: 1.5px;
    transition: color 0.3s;
    user-select: none;
}

.logo-link:hover .nombre-web {
    color: var(--color-primario);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    color: var(--color-secundario);
    text-decoration: none;
    font-weight: bold;
    font-size: 17px;
    transition: color 0.3s;
    user-select: none;
}

nav a:hover {
    color: var(--color-primario);
}

/* ----------------------------------------------------- */
/* 2. LAYOUT GENERAL */
/* ----------------------------------------------------- */

main {
    padding: 40px;
}

section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* ----------------------------------------------------- */
/* 3. BÚSQUEDA Y FORMULARIOS (Inputs y Botones Comunes) */
/* ----------------------------------------------------- */

#busqueda {
    background-color: var(--color-blanco);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

#busqueda .form-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 15px;
    flex-wrap: wrap;
}

#form-busqueda, #form-reset {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Estilo unificado para inputs de Búsqueda */
#busqueda input {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
    background-color: #f9f9f9;
    color: var(--color-texto);
    height: 40px;
}

/* Estilo unificado para botones de Búsqueda */
#busqueda button {
    padding: 0 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    color: white;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
    height: 40px;
}

#form-busqueda button { background-color: var(--color-primario); }
#form-busqueda button:hover { background-color: #c62828; }

#form-reset button { background-color: var(--color-secundario); }
#form-reset button:hover { background-color: #333; }

.notificacion {
    max-width: 800px;
    margin: 0 auto 30px auto;
    padding: 15px;
    background-color: #fceceb;
    border: 1px solid var(--color-primario);
    border-left: 5px solid var(--color-primario);
    border-radius: 5px;
    color: var(--color-texto);
    font-size: 16px;
    user-select: text;
}

/* ----------------------------------------------------- */
/* 4. TARJETAS DE VEHÍCULOS */
/* ----------------------------------------------------- */

.contenedor-vehiculos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    justify-content: center;
}

.contenedor-vehiculos > .card-vehiculo:only-child {
    max-width: 350px;
    width: 100%;
}

.card-vehiculo {
    background-color: var(--color-blanco);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card-vehiculo:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.card-vehiculo img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    object-position: center;
}

.info-vehiculo {
    padding: 20px;
    min-height: 180px;
}
.info-vehiculo h4 { font-size: 22px; margin-bottom: 10px; color: #333; }
.info-vehiculo p { margin-bottom: 5px; color: #666; }

.dato-secundario {
    font-size: 14px;
    color: #888;
    margin-bottom: 3px;
}

.info-vehiculo .precio {
    font-size: 24px;
    font-weight: bold;
    color: var(--color-primario);
    margin-top: 15px;
}

/* ----------------------------------------------------- */
/* 5. PAGINACIÓN, CONTACTO Y FOOTER */
/* ----------------------------------------------------- */

.paginacion {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 40px;
}

.pag-link {
    display: inline-block;
    padding: 8px 15px;
    min-width: 40px;
    text-align: center;
    border: 1px solid var(--color-secundario);
    border-radius: 5px;
    text-decoration: none;
    color: var(--color-secundario);
    background-color: var(--color-blanco);
    transition: all 0.3s;
    font-weight: bold;
}

.pag-link:hover {
    background-color: var(--color-primario);
    color: var(--color-blanco);
    border-color: var(--color-primario);
}

.pag-link.actual {
    background-color: var(--color-primario);
    color: var(--color-blanco);
    border-color: var(--color-primario);
    cursor: default;
    pointer-events: none;
    outline: none;
}

.contenedor-contacto { display: flex; justify-content: center; gap: 80px; text-align: center; flex-wrap: wrap; }
.icono-contacto { width: 70px; height: 70px; transition: transform 0.3s; }
.icono-contacto:hover { transform: scale(1.1); }
.metodo-contacto p { font-size: 20px; font-weight: bold; margin-top: 10px; }
.metodo-contacto span { color: var(--color-secundario); }

footer {
    text-align: center;
    padding: 30px;
    background-color: #333;
    color: #f4f4f4;
    margin-top: 40px;
}

footer a { color: var(--color-blanco); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ----------------------------------------------------- */
/* 6. ESTILOS DE COMPONENTES REUTILIZABLES (Inputs y Botones) */
/* ----------------------------------------------------- */

/* Inputs de texto (Unificado para login/admin y usado en general) */
.input-text {
    margin-top: 8px;
    padding: 10px 12px;
    border: 1px solid var(--color-borde-input);
    border-radius: 8px; /* 8px en login, 10px en admin. Se unifica a 10px. */
    background: var(--color-blanco);
    font-size: 1rem; /* 1rem en login, 0.96rem en admin. Se unifica a 1rem. */
    transition: border-color .12s ease, box-shadow .12s ease;
    width: 100%; /* Añadido para consistencia en formularios */
    box-sizing: border-box; /* Añadido para consistencia en formularios */
    height: auto; /* Se elimina height: 40px para flexibilidad con textarea */
}
/* Se aplica el estilo de Admin al focus que es más robusto y usa la variable de color */
.input-text:focus {
    outline: none;
    border-color: var(--color-primario);
    box-shadow: 0 8px 24px rgba(229,57,53,0.08);
}

/* Botón Primario (Unificado para login/admin) */
.btn-primario {
    background: var(--color-primario);
    color: var(--color-blanco);
    border: 0;
    padding: 10px 14px; /* 14px en login, 16px en admin. Se unifica a 14px. */
    border-radius: 10px;
    font-weight: 700;
    box-shadow: 0 8px 24px var(--color-shadow-primario);
    transition: transform .08s ease, box-shadow .12s ease;
    cursor: pointer;
}
.btn-primario:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px var(--color-shadow-primario);
    /* El gradiente de admin era: linear-gradient(180deg, var(--color-primario), #b71c1c);
       Se simplifica a color plano para el hover, pero usando la variable oscura para un efecto sutil.
    */
    background: var(--color-primario-oscuro);
}

/* Botón Secundario (Unificado para login/admin) */
.btn-secundario {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--color-secundario);
    border: 1px solid var(--color-borde-input);
    padding: 9px 12px; /* 9px/12px en login, 10px/14px en admin. Se unifica a 10px/14px. */
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    /* Se añade el estilo box-sizing: border-box para consistencia */
    box-sizing: border-box;
}
.btn-secundario:hover {
    background: #fafafa;
    box-shadow: 0 8px 20px rgba(0,0,0,0.04);
}

/* ----------------------------------------------------- */
/* 7. ESTILOS DE PÁGINAS ESPECÍFICAS (Login / Admin) */
/* ----------------------------------------------------- */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, #f7f8fa 0%, var(--color-blanco) 100%);
    padding: 36px 20px;
    font-family: var(--fuente-alternativa);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-blanco);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(16, 24, 40, 0.08);
    padding: 28px;
    border: 1px solid #f0f0f2;
}

.login-card h1 {
    margin: 0 0 12px;
    font-size: 1.25rem;
    color: #111;
    letter-spacing: -0.2px;
}

.login-error {
    background: #fff4f4;
    color: #8b1f1f;
    border: 1px solid rgba(255, 97, 97, 0.12);
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 12px;
    font-weight: 600;
    font-size: .95rem;
}

.login-form { display: grid; gap: 12px; }
.field { display: flex; flex-direction: column; font-size: .95rem; color: #333; }
.login-actions { display: flex; gap: 10px; align-items: center; margin-top: 6px; }
.login-foot { margin-top: 14px; font-size: .85rem; color: #777; }

/* Panel Admin */
.admin-panel {
    max-width: 980px;
    margin: 40px auto;
    background: linear-gradient(180deg, var(--color-blanco), #fbfbfb);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(12, 24, 50, 0.06);
    padding: 28px;
    font-family: var(--fuente-alternativa);
    color: #222;
    border: 1px solid #f0f0f3;
}

.admin-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}
.admin-header h2 { margin: 0; font-size: 1.4rem; color: #111; }
.admin-user { margin: 0; font-size: .95rem; color: #555; }
.admin-user a { color: var(--color-secundario); text-decoration: none; padding: 4px 6px; border-radius:6px; }
.admin-user a:hover { background:#f6f7f8; }

.mensaje {
    background: #fff8e6;
    color: #7a5100;
    border: 1px solid rgba(250, 200, 60, 0.12);
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 14px;
    font-weight: 600;
}

.admin-form { display: grid; gap: 14px; margin-top: 6px; }
.admin-form .grupo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.admin-form label {
    display: flex;
    flex-direction: column;
    font-size: .95rem;
    color: #333;
}

/* Estilos de archivo y nota */
.file-label { display: inline-block; cursor: pointer; color:#333; }
.file-label input[type="file"] { margin-top: 8px; }
.nota { display:block; color:#666; font-size:.85rem; margin-top:6px; }

.admin-actions { display: flex; gap: 12px; margin-top: 8px; align-items: center; }
.preview, .thumb { width:160px; height:100px; object-fit:cover; border-radius:8px; border:1px solid #e8e8ea; }

/* ----------------------------------------------------- */
/* 8. AJUSTES RESPONSIVE */
/* ----------------------------------------------------- */

@media (max-width: 820px) {
    /* Ajustes Admin Panel */
    .admin-panel { margin: 20px; padding: 18px; }
    .admin-form .grupo { grid-template-columns: 1fr; }
    .admin-actions { flex-direction: column; align-items: stretch; }
    .btn-primario, .btn-secundario { width: 100%; justify-content: center; }
}

@media (max-width: 768px) {
    /* Ajustes Generales */
    header { padding: 10px 20px; }
    nav { flex-direction: column; }
    nav ul { margin-top: 10px; }

    .nombre-web {
        font-size: 20px;
        letter-spacing: 1px;
    }

    /* Ajustes Búsqueda */
    #busqueda .form-container {
        flex-direction: column;
        align-items: stretch;
    }

    #form-busqueda, #form-reset {
        flex-direction: column;
        gap: 10px;
    }

    #busqueda input, #busqueda button {
        width: 100%;
    }

    .contenedor-contacto { gap: 40px; }
}

@media (max-width: 480px) {
    /* Ajustes Login */
    .login-card { padding: 18px; }
    .login-actions { flex-direction: column; align-items: stretch; }
    .btn-primario, .btn-secundario { width: 100%; justify-content: center; }
}

/* ===== Carousel de imágenes en cards ===== */
.carousel-container {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    border-radius: 12px 12px 0 0;
    background: #f5f5f5;
}

.carousel-imagenes {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
    pointer-events: none;
}

.carousel-img.active {
    opacity: 1;
    pointer-events: auto;
}

/* Botones de navegación */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, transform 0.2s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background: rgba(0, 0, 0, 0.75);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: 12px;
}

.carousel-btn.next {
    right: 12px;
}

/* Indicadores */
.carousel-indicators {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.indicator.active {
    background: white;
    width: 28px;
    border-radius: 4px;
}

/* Card mejorada */
.card-vehiculo {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-vehiculo:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.12);
}

.info-vehiculo {
    padding: 16px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.info-vehiculo h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
}

.dato-secundario {
    margin: 4px 0;
    font-size: 0.88rem;
    color: #666;
}

.precio {
    margin-top: auto;
    font-weight: 700;
    color: var(--color-primario, #e53935);
    font-size: 1.2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .carousel-container {
        height: 220px;
    }
    
    .carousel-btn {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }

    .indicator.active {
        width: 24px;
    }
}

@media (max-width: 480px) {
    .carousel-container {
        height: 180px;
    }
    
    .carousel-btn {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }

    .info-vehiculo {
        padding: 12px;
    }

    .info-vehiculo h4 {
        font-size: 0.95rem;
    }

    .dato-secundario {
        font-size: 0.8rem;
    }

    .precio {
        font-size: 1rem;
    }
}