/* 
 * landing.css - Estética Técnica con Ciclo Triple, Logo F y Optimización Móvil Premium
 */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;700&display=swap');

:root {
    /* MODO TÉCNICO (Default) - Grisáceo Original */
    --color-primary: #52A7A7;
    --color-primary-dark: #2B8080;
    --color-accent: #52A7A7;
    --color-bg: #050505;
    --color-text: #ffffff;
    --color-text-dim: rgba(255, 255, 255, 0.95);
    --card-bg: rgba(8, 8, 8, 0.96);
    --card-border: rgba(255, 255, 255, 0.1);
    --radius-sharp: 4px;

    /* Configuración de Opacidades de Fondo */
    --bg-tech-opacity: 0.35;
    --bg-night-opacity: 0;
    --bg-day-opacity: 0;
}

body.theme-night {
    /* MODO NOCHE (CV) */
    --bg-tech-opacity: 0;
    --bg-night-opacity: 0.6;
    --bg-day-opacity: 0;
}

body.theme-day {
    /* MODO DÍA (CV) */
    --color-bg: #f2f7f9;
    --color-text: #191919;
    --color-text-dim: rgba(0, 0, 0, 0.6);
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-border: rgba(0, 0, 0, 0.15);
    --color-primary: #52A7A7;
    --color-primary-dark: #2B8080;
    --color-accent: #52A7A7;
    --bg-tech-opacity: 0;
    --bg-night-opacity: 0;
    --bg-day-opacity: 0.8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.8s ease, color 0.8s ease;
}

/* Background Layers */
.bg-container {
    position: fixed;
    top: -2.5%;
    left: -2.5%;
    width: 105%;
    height: 105%;
    z-index: -3;
}

.bg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: opacity 1.2s ease-in-out;
}

#bg-tech {
    background-image: url('../images/intro-bg.jpg');
    opacity: var(--bg-tech-opacity);
}

#bg-night {
    background-image: url('../images/fondo-noche.jpg');
    opacity: var(--bg-night-opacity);
}

#bg-day {
    background-image: url('../images/fondo.jpg');
    opacity: var(--bg-day-opacity);
}

#canvas-nodes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    opacity: 0;
    transition: opacity 2s ease;
}

/* Identidad: Logo F */
.header-logo {
    position: fixed;
    top: 2.5rem;
    left: 3.5rem;
    z-index: 200;
}

.f-logo {
    height: 38px;
    width: auto;
    display: none;
}

body.theme-tech .logo-white,
body.theme-night .logo-white {
    display: block;
}

body.theme-day .logo-dark {
    display: block;
}

/* Technical Card */
.main-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-top: 3px solid var(--color-primary);
    padding: 3.5rem;
    border-radius: var(--radius-sharp);
    max-width: 750px;
    width: 90%;
    text-align: center;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 10;
}

h1 {
    font-size: 2.1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

/* Error Specifics */
.error-code {
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin: 1rem 0;
    line-height: 1;
    text-shadow: 0 0 20px rgba(82, 167, 167, 0.2);
}

.error-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

/* Role System */
.role-container {
    height: 1.2rem;
    margin-bottom: 2rem;
    position: relative;
}

.role {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
    width: 100%;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.8s ease, transform 0.8s ease, color 0.8s ease;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.role.active {
    opacity: 1;
    transform: scale(1);
}

.role.exit {
    opacity: 0;
    transform: scale(0.98);
}

/* Text Content */
.card-content {
    margin-bottom: 1.5rem;
    text-align: center;
}

.intro-text {
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-text-dim);
    margin-bottom: 1rem;
    text-align: justify;
}

.separator {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--card-border), transparent);
    margin: 1.5rem 0;
}

/* CTA Button - Industrial Style */
.cta-container {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: #fff;
    padding: 0.8rem 2rem;
    border-radius: var(--radius-sharp);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-btn .lnr {
    margin-right: 10px;
    font-size: 1.1rem;
}

.cta-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.cta-btn:active {
    transform: translateY(0);
}

/* Side Menu Global (Ahora fuera de la tarjeta) */
.side-menu {
    position: fixed;
    left: calc(50% + 373px);
    /* Card (750px/2 = 375px) - ajuste 2px */
    top: 50%;
    transform: translateY(-50%);
    z-index: 105;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-left: none;
    border-radius: 0 50px 50px 0;
    padding: 10px 0;
    width: 50px;
    max-width: 50px;
    box-shadow: 15px 10px 30px rgba(0, 0, 0, 0.1);
    transition: width 0.3s ease, padding 0.3s ease;
    overflow: hidden;
}

@media (min-width: 769px) {
    .side-menu:hover {
        width: 250px;
        max-width: 250px;
        padding: 10px 15px;
    }
}

.main-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-btn {
    display: flex;
    align-items: center;
    text-decoration: none;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    height: 44px;
    width: 100%;
    text-align: left;
    padding: 0 14px;
    border-radius: 0 50px 50px 0;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-btn .link-text {
    font-size: 0.85rem;
    font-weight: 500;
    max-width: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

@media (min-width: 769px) {
    .side-menu:hover .nav-btn .link-text {
        max-width: 150px;
        opacity: 1;
        margin-left: 12px;
    }
}

.nav-btn:hover {
    background: rgba(82, 167, 167, 0.1);
    color: var(--color-primary);
}

/* Footer Flotante Dynamico */
.footer-floating {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
}

.footer-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.6rem 1.6rem;
    border-radius: var(--radius-sharp);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    letter-spacing: 0.05em;
    text-align: center;
}

/* Language Selector Tag */
.lang-tag {
    display: flex;
    position: absolute;
    top: -22px;
    right: 1.2rem;
    background: var(--color-primary);
    color: #fff;
    height: 44px;
    border-radius: 22px;
    justify-content: center;
    align-items: center;
    z-index: 40;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: transform 0.3s ease, background 0.3s ease;
    overflow: hidden; /* Evita que el hover nativo del select sobresalga */
}

.lang-tag:hover {
    transform: translateY(-2px);
    background: var(--color-primary-dark);
}

.lang-select {
    width: 100%;
    height: 100%;
    padding: 0 35px 0 15px; /* Espacio derecho ocupado por la flecha */
    background: transparent;
    color: #fff;
    border: none;
    font-size: 0.95rem;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.lang-select option {
    background: var(--color-primary);
    color: #fff;
    font-weight: 500;
}

.lang-tag .lnr-chevron-down {
    position: absolute;
    right: 15px;
    pointer-events: none; /* Fundamental: el click atraviesa el icono y le da al select */
    font-size: 0.9rem;
}

/* Mobile Controls */
.mobile-menu-trigger,
.mobile-theme-trigger,
.mobile-quick-nav,
.mobile-only {
    display: none;
}

/* Responsive Logic - Rediseño Premium Final (Fix Despliegue) */
@media (max-width: 768px) {
    body {
        display: block;
        overflow-y: auto;
        height: auto;
        padding: 7rem 1rem 12rem;
    }

    .header-logo {
        top: 1.5rem;
        left: 1.5rem;
    }

    .main-card {
        padding: 2.5rem 1.2rem;
        width: 100%;
        position: relative;
        margin-top: 1rem;
    }

    h1 {
        font-size: 1.55rem;
    }

    /* Botón "MÁS" (Der Abajo) */
    .mobile-menu-trigger {
        display: flex;
        position: absolute;
        bottom: -22px;
        right: 1.2rem;
        background: var(--color-primary);
        color: #fff;
        padding: 0 1.2rem;
        height: 44px;
        border-radius: 22px;
        justify-content: center;
        align-items: center;
        z-index: 40;
        border: none;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
        cursor: pointer;
        gap: 8px;
    }

    /* Estilo Unificado para Botones Circulares Móviles (Iconos) */
    .mobile-theme-trigger,
    .mobile-quick-nav .nav-btn {
        display: flex;
        justify-content: center;
        align-items: center;
        border-radius: 50% !important;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        cursor: pointer;
        z-index: 40;
    }

    /* Versión Modo Oscuro (Tech / Night) - Gris Uniforme solicitado */
    .mobile-theme-trigger,
    .mobile-quick-nav .nav-btn {
        background: var(--card-bg);
        /* Gris uniforme traslúcido */
        border: 1px solid rgba(255, 255, 255, 0.3);
        /* Reborde gris técnico */
        color: var(--color-primary);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    /* Versión Modo Día (Day) - Esfera Blanca con Borde Negro/Teal */
    body.theme-day .mobile-theme-trigger,
    body.theme-day .mobile-quick-nav .nav-btn {
        background: #ffffff !important;
        border: 2px solid var(--color-primary-dark) !important;
        color: var(--color-primary-dark);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    /* Posicionamiento y Tamaño Perfeccionado */
    .mobile-theme-trigger {
        position: absolute;
        bottom: -22px;
        left: 1.2rem;
        width: 44px;
        height: 44px;
    }

    .mobile-quick-nav {
        display: flex;
        position: absolute;
        top: -15px;
        left: 1.2rem;
        gap: 12px;
    }

    .mobile-quick-nav .nav-btn {
        width: 42px;
        height: 42px;
    }

    /* FULL SCREEN DRAWER - Fix Apertura Global */
    .side-menu {
        position: fixed;
        left: auto;
        right: -100vw;
        /* Fuera del viewport real */
        top: 0;
        transform: none;
        width: 100vw;
        max-width: none !important;
        /* Desbloquea el ancho restringido de desktop */
        height: 100vh;
        border-radius: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        z-index: 3000;
        transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 2rem;
        border: none;
    }

    body.theme-day .side-menu {
        background: rgba(242, 247, 249, 0.98);
    }

    .side-menu.active {
        right: 0;
    }

    .drawer-close {
        display: flex !important;
        position: fixed;
        top: 2rem;
        right: 2rem;
        background: var(--color-primary);
        color: #fff;
        border-radius: 50%;
        width: 50px;
        height: 50px;
        justify-content: center;
        align-items: center;
        border: none;
        font-size: 1.5rem;
        cursor: pointer;
        z-index: 3100;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    .main-menu {
        width: 100%;
        align-items: center;
        gap: 20px;
    }

    .side-menu .nav-btn {
        height: 55px;
        justify-content: center;
        border-radius: 8px;
        width: 85%;
        background: transparent;
        /* Eliminamos el fondo que se veía como caja blanca */
        box-shadow: none;
        /* Aseguramos que no haya sombras */
    }

    .side-menu .link-text {
        max-width: 100%;
        opacity: 1;
        margin-left: 15px;
        font-size: 1.1rem;
    }

    /* Reparación Footer */
    .footer-floating {
        position: relative;
        bottom: auto;
        margin-top: 5rem;
        left: 0;
        transform: none;
        width: 100%;
        display: flex;
        justify-content: center;
    }

    .footer-content {
        max-width: 280px;
        white-space: normal;
        line-height: 1.5;
        font-size: 0.62rem;
        padding: 1.1rem;
    }
}