/* -------------------------------------------
   1. ROOT VARIABLES & THEME DEFINITION
   ------------------------------------------- */

/* Variables para el Tema Oscuro (Base) */
:root, [data-theme="dark"] {
    --color-primary: #1e40af; /* Azul Fuerte (ej. Tailwind blue-700) */
    --color-accent: #3b82f6; /* Azul Claro (ej. Tailwind blue-500) */
    --color-background: #0D1117; /* Gris Oscuro Profundo (GitHub Dark) */
    --color-secondary-bg: #10151D; /* Sección de fondo alternativo */
    --color-text: #e5e7eb; /* Texto principal (Blanco/Gris muy claro) */
    --color-text-light: #9ca3af; /* Texto secundario (Gris Suave) */
    --color-glass-bg: rgba(255, 255, 255, 0.05); /* Fondo glass */
    --color-glass-border: rgba(255, 255, 255, 0.15); /* Borde glass */
    --color-neon-shadow: 0 0 10px var(--color-accent), 0 0 20px var(--color-accent);
    --header-shadow-color: rgba(27, 31, 35, 0.25);
    --shadow-light-source: rgba(59, 130, 246, 0.3);
}

/* Variables para el Tema Claro (AJUSTADO: Texto Principal NEGRO) */
[data-theme="light"] {
    --color-primary: #1d4ed8;
    --color-accent: #2563eb;
    --color-background: #ffffff;
    --color-secondary-bg: #f3f4f6;
    --color-text: #000000; /* Texto principal NEGRO PURO */
    --color-text-light: #4b5563; /* Gris oscuro para subtítulos */
    --color-glass-bg: rgba(0, 0, 0, 0.05);
    --color-glass-border: rgba(0, 0, 0, 0.1);
    --color-neon-shadow: none;
    --header-shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-light-source: rgba(0, 0, 0, 0.1);
}


/* -------------------------------------------
   2. BASE STYLES & DYNAMIC COLORS
   ------------------------------------------- */

/* Aplicar variables de fondo y texto a todo el cuerpo */
body {
    background-color: var(--color-background);
    color: var(--color-text);
    transition: background-color 0.5s ease, color 0.5s ease;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Clases CSS dinámicas para asegurar que el texto cambia */
.text-dynamic-text { color: var(--color-text) !important; }
.text-dynamic-text-light { color: var(--color-text-light) !important; }
.bg-dynamic-secondary { background-color: var(--color-secondary-bg) !important; }
.border-dynamic-border { border-color: var(--color-glass-border) !important; }

/* Asegurar que el texto dentro del formulario de contacto (que tiene un fondo oscuro fijo) se mantenga legible en tema claro */
[data-theme="light"] .text-dynamic-text-contact { color: var(--color-text) !important; }
[data-theme="light"] .text-dynamic-text-light-contact { color: var(--color-text-light) !important; }
/* Ajustar el color de texto en el footer para tema claro si es necesario */
[data-theme="light"] footer .text-dynamic-text-light { color: var(--color-text-light) !important; }

/* Botón de tema (para cambiar color del icono) */
.theme-icon-button {
    color: var(--color-text) !important;
}
.theme-icon-button:hover {
    color: var(--color-accent) !important;
}


/* Estilo para los inputs elegantes */
.form-input-elegant:focus {
    box-shadow: 0 0 0 2px var(--color-background), 0 0 0 4px var(--color-accent);
}


/* -------------------------------------------
   3. NEON & GLASS EFFECTS
   ------------------------------------------- */

/* Efecto Glass Card */
.glass-card {
    background-color: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.4s ease;
}

/* Efecto de brillo en hover (hover-shine) */
.hover-shine:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px var(--shadow-light-source);
}

/* Botón Neon Primario */
.btn-neon {
    background: var(--color-accent);
    color: var(--color-background); /* Texto oscuro sobre fondo claro (neon) */
    box-shadow: 0 0 5px var(--color-accent), 0 0 15px var(--color-primary);
    border: 2px solid transparent;
}

.btn-neon:hover {
    background: var(--color-primary);
    color: var(--color-text);
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--color-accent), 0 0 40px var(--color-accent);
    border: 2px solid var(--color-accent);
}

/* Texto Degradado Neon (Principal) */
.gradient-text {
    background: linear-gradient(90deg, #8b5cf6, var(--color-accent), #34d399); /* Púrpura, Azul, Verde */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

/* Sombra Neon para Títulos */
[data-theme="dark"] .neon-text {
    text-shadow: 0 0 5px rgba(59, 130, 246, 0.8), 0 0 15px rgba(59, 130, 246, 0.5);
}
[data-theme="light"] .neon-text {
    text-shadow: none; 
}


/* Sombra Neon Sutil (para texto secundario) */
[data-theme="dark"] .neon-text-subtle {
    text-shadow: 0 0 2px rgba(59, 130, 246, 0.5);
}
[data-theme="light"] .neon-text-subtle {
    text-shadow: none;
}


/* -------------------------------------------
   4. LAYOUT & COMPONENTS
   ------------------------------------------- */

/* HEADER & NAVBAR */
.header-shadow {
    box-shadow: 0 4px 6px -1px var(--header-shadow-color), 0 2px 4px -2px var(--header-shadow-color);
}

/* WHATSAPP BUTTON */
.whatsapp-button {
    z-index: 1000;
}

/* ACCORDION (FAQ) */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.accordion-item.active .accordion-content {
    max-height: 500px; /* Suficientemente grande para el contenido */
    padding-bottom: 20px;
    padding-top: 0;
}

.accordion-item.active .accordion-header i {
    transform: rotate(180deg);
}

/* SWIPER (PORTAFOLIO) */
.swiper-container {
    padding-bottom: 40px; /* Espacio para la paginación */
}

/* Estilo para las flechas de navegación del Swiper */
.swiper-button-next, .swiper-button-prev {
    color: var(--color-accent) !important;
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    transition: background-color 0.3s;
}

.swiper-button-next::after, .swiper-button-prev::after {
    font-size: 18px !important;
}

.swiper-pagination-bullet-active {
    background: var(--color-accent) !important;
}

/* -------------------------------------------
   5. AURORA BACKGROUND (Animation)
   ------------------------------------------- */

.aurora-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    opacity: 0.3;
}

/* En tema claro, se reduce la opacidad del aurora para que no sature */
[data-theme="light"] .aurora-bg {
    opacity: 0.15;
}

.aurora-bg::before, .aurora-bg::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.aurora-bg::before {
    background: radial-gradient(circle, #3b82f6 0%, transparent 50%); /* Azul */
    width: 600px;
    height: 600px;
    top: -200px;
    left: -200px;
    animation: moveAurora1 20s infinite alternate;
}

.aurora-bg::after {
    background: radial-gradient(circle, #8b5cf6 0%, transparent 50%); /* Púrpura */
    width: 800px;
    height: 800px;
    bottom: -300px;
    right: -300px;
    animation: moveAurora2 25s infinite alternate-reverse;
}

@keyframes moveAurora1 {
    0% { transform: translate(0, 0); }
    50% { transform: translate(100px, 100px); }
    100% { transform: translate(0, 0); }
}

@keyframes moveAurora2 {
    0% { transform: translate(0, 0); }
    40% { transform: translate(-100px, -50px); }
    100% { transform: translate(0, 0); }
}


/* -------------------------------------------
   6. SECTION FADE-IN (Animation for Scroll)
   ------------------------------------------- */

.section-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Clase que se añade con JavaScript al entrar en el viewport */
.section-fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}