/* ==========================================

   1. VARIABLES Y CONFIGURACIÓN GENERAL

   ========================================== */

* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



:root {

    --color-fondo: #F9F8F6;

    --color-primario: #2A3B2C;

    --color-texto: #333333;

    --color-acento: #8C7B65;

    --color-tarjeta: #E2D6BA;

    --color-degradado-inicio: #8C7B65;

    --color-degradado-fin: #ECD79E;

    --color-borde: #EBE8E0;

    --fuente-principal: "Georgia", "Times New Roman", serif;

}



body {

    background-color: var(--color-fondo);

    color: var(--color-texto);

    font-family: var(--fuente-principal);

    line-height: 1.6;

}



/* ==========================================

   2. HEADER Y NAVEGACIÓN (CON ANIMACIONES)

   ========================================== */

header {

    background-color: var(--color-fondo);

    display: flex;

    justify-content: space-between;

    align-items: center;

    padding: 10px 50px;

    border-bottom: 1px solid var(--color-borde);

}



header a {

    text-decoration: none;

    color: var(--color-primario);

    font-weight: bold;

    font-size: 18px;

    letter-spacing: 1px;

}



header img {

    display: block;

}



nav ul {

    list-style: none;

    display: flex;

    gap: 30px;

    align-items: center;

}



nav a {

    text-decoration: none;

    color: var(--color-primario);

    font-weight: bold;

    font-size: 14px;

    letter-spacing: 1px;

    text-transform: uppercase;

    position: relative;

    transition: color 0.3s ease;

}



nav a::after {

    content: '';

    position: absolute;

    width: 0;

    height: 1px;

    bottom: -4px;

    left: 0;

    background-color: var(--color-acento);

    transition: width 0.3s ease;

}



nav a:hover {

    color: var(--color-acento);

}



nav a:hover::after {

    width: 100%;

}



/* Menú Desplegable Animado */

.menu-desplegable {

    position: relative;

}



.sub-menu {

    opacity: 0;

    visibility: hidden;

    transform: translateY(8px);

    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

   

    position: absolute;

    top: 100%;

    left: 0;

    background-color: var(--color-fondo);

    border: 1px solid var(--color-borde);

    border-radius: 8px;

    list-style: none;

    padding: 8px 0;

    min-width: 210px;

    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);

    z-index: 100;

}



.sub-menu li {

    padding: 0;

}



.sub-menu a {

    display: block;

    padding: 10px 18px;

    font-size: 12px;

    transition: background-color 0.2s ease, color 0.2s ease;

}



.sub-menu a::after {

    display: none;

}



.sub-menu a:hover {

    background-color: #F0ECE1;

    color: var(--color-acento);

}



.menu-desplegable:hover .sub-menu {

    opacity: 1;

    visibility: visible;

    transform: translateY(0);

}



/* ==========================================

   3. VISTA CLIENTE (INDEX)

   ========================================== */

#inicio {

    background-image: url("../assets/img/7276507.png");

    background-size: cover;

    background-position: center;

    display: flex;

    justify-content: space-between;

    align-items: center;

    min-height: 85vh;

}



#inicio div {

    font-size: 28px;

    background-color: rgba(255, 255, 255, 0.92);

    border-radius: 20px;

    max-width: 420px;

    padding: 40px;

    margin-left: 10%;

    box-shadow: 0 8px 24px rgba(0,0,0,0.05);

}



#inicio h4 a {

    text-decoration: none;

    color: var(--color-primario);

    border-bottom: 2px solid var(--color-acento);

    transition: opacity 0.2s ease;

}



#inicio h4 a:hover {

    opacity: 0.7;

}



aside {

    background-color: rgba(255, 255, 255, 0.92);

    width: 320px;

    padding: 40px 30px;

    align-self: stretch;

    display: flex;

    flex-direction: column;

    gap: 15px;

    border-left: 1px solid var(--color-borde);

}



/* ==========================================

   4. LOGIN (CON ANIMACIÓN DE APARICIÓN)

   ========================================== */

@keyframes aparecerSuave {

    from {

        opacity: 0;

        transform: translateY(15px);

    }

    to {

        opacity: 1;

        transform: translateY(0);

    }

}



#pagina-login {

    background-image: url("../assets/img/login-img.jpg");

    background-size: cover;

    background-position: center;

    display: flex;

    min-height: 90vh;

    align-items: center;

    justify-content: center;

}



#pagina-login div {

    background-color: var(--color-fondo);

    padding: 35px;

    border-radius: 16px;

    max-width: 380px;

    width: 90%;

    text-align: center;

    box-shadow: 0 10px 25px rgba(0,0,0,0.15);

    animation: aparecerSuave 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;

}



#pagina-login h1 {

    color: var(--color-primario);

    margin-bottom: 20px;

    font-size: 24px;

}



#pagina-login label {

    display: block;

    margin-bottom: 6px;

    font-weight: bold;

    text-align: left;

    font-size: 14px;

}



#pagina-login input {

    display: block;

    width: 100%;

    padding: 12px;

    border: 1px solid #CCC;

    border-radius: 8px;

    margin-bottom: 18px;

    font-family: inherit;

    transition: border-color 0.2s ease;

}



#pagina-login input:focus {

    outline: none;

    border-color: var(--color-acento);

}



#pagina-login button, .btn-principal {

    background-color: var(--color-primario);

    color: #FFF;

    border: none;

    padding: 12px 24px;

    border-radius: 8px;

    font-size: 14px;

    font-family: inherit;

    font-weight: bold;

    cursor: pointer;

    transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;

}



#pagina-login button:hover, .btn-principal:hover {

    background-color: var(--color-acento);

    box-shadow: 0 4px 12px rgba(140, 123, 101, 0.2);

}



#pagina-login button:active, .btn-principal:active {

    transform: scale(0.98);

}



/* ==========================================

   5. PANEL DE ADMINISTRACIÓN (TARJETAS DINÁMICAS)

   ========================================== */

#admin, #admin-seccion {

    background: linear-gradient(var(--color-degradado-inicio), var(--color-degradado-fin));

    min-height: 90vh;

    display: flex;

    align-items: center;

    justify-content: center;

    padding: 40px 20px;

}



.admin-div, .seccion-div {

    background-color: var(--color-fondo);

    width: 100%;

    max-width: 1100px;

    padding: 40px;

    border-radius: 16px;

    text-align: center;

    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);

}



.admin-div h1 {

    color: var(--color-primario);

    margin-bottom: 30px;

    font-size: 28px;

}



.admin-div h2 {

    color: var(--color-acento);

    font-size: 18px;

    font-weight: normal;

}



.grid-tarjetas {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));

    gap: 20px;

    margin-top: 20px;

}



.grid-tarjetas a {

    text-decoration: none;

}



.options-admin {

    background-color: var(--color-tarjeta);

    border: 2px solid #D4C5A3;

    border-radius: 12px;

    padding: 15px;

    display: flex;

    flex-direction: column;

    align-items: center;

    gap: 12px;

    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),

                box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),

                background-color 0.35s ease;

}



.options-admin:hover {

    transform: translateY(-6px);

    box-shadow: 0 12px 30px rgba(42, 59, 44, 0.1);

    background-color: #E8DCC2;

}



.options-admin:active {

    transform: scale(0.98);

}



.options-admin h3 {

    font-weight: 600;

    color: var(--color-primario);

    font-size: 17px;

}



.options-admin img {

    width: 100%;

    height: 140px;

    object-fit: cover;

    border-radius: 8px;

    transition: transform 0.5s ease;

}



.options-admin:hover img {

    transform: scale(1.02);

}



/* Subpáginas y Estados Vacíos */

.cabecera-seccion {

    display: flex;

    justify-content: space-between;

    align-items: center;

    text-align: left;

    border-bottom: 1px solid var(--color-borde);

    padding-bottom: 20px;

    margin-bottom: 30px;

}



.subtitulo {

    color: #666;

    font-size: 14px;

}



.estado-vacio {

    padding: 60px 20px;

    border: 2px dashed #D4C5A3;

    border-radius: 12px;

    background-color: #FFF;

    margin-top: 20px;

}



.icono-vacio {

    font-size: 48px;

    margin-bottom: 10px;

}



.estado-vacio h3 {

    color: var(--color-primario);

    margin-bottom: 8px;

}



.estado-vacio p {

    color: #777;

    font-size: 14px;

}



/* ==========================================

   6. RESPONSIVE DESIGN (MÓVILES Y TABLETS)

   ========================================== */

@media screen and (max-width: 768px) {

    header {

        padding: 10px 20px;

    }



    nav ul {

        gap: 15px;

    }



    nav a {

        font-size: 11px;

    }



    #inicio {

        flex-direction: column;

        justify-content: center;

        padding: 20px;

    }



    #inicio div {

        margin-left: 0;

        max-width: 100%;

    }



    aside {

        display: none;

    }



    .cabecera-seccion {

        flex-direction: column;

        gap: 15px;

        align-items: flex-start;

    }



    .admin-div, .seccion-div {

        padding: 20px;

    }

}