:root {
    --primary: #F7931A;
    --bg-deep: #0a0b10;
    --bg-card: rgba(255, 255, 255, 0.03);
    --text-main: #e2e8f0;
    --text-dim: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
}

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

html {
    scroll-padding-top: 100px; /* Compensa la altura del menú superior */
    scroll-behavior: smooth;   /* Añade un efecto de desplazamiento suave (opcional pero muy recomendado) */
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-deep);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Fondo de malla sutil */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 2px 2px, rgba(255,255,255,0.05) 1px, transparent 0);
    background-size: 40px 40px;
    z-index: -1;
}

/* Hero Glow */
body::before {
    content: "";
    position: fixed;
    top: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(247, 147, 26, 0.08) 0%, transparent 70%);
    z-index: -1;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    padding: 24px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 11, 16, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    margin-right: 20px; /* Separación del menú */
}

.logo a {
    font-size: 2.0rem; 
    color: var(--text-main); 
    text-decoration: none;
}

.logo span { color: var(--primary); }

nav ul {
    display: flex;
    gap: 32px;
    list-style: none;
}

nav a {
    text-decoration: none;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    transition: 0.3s;
}

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

/* Hero */
.hero {
    padding: 140px 0;
    text-align: center;
}

.edition {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 24px;
    display: block;
}

.hero h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.hero-meta {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto 48px;
}

/* Buttons */
.btn {
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
    display: inline-block;
}

.btn.primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 10px 20px rgba(247, 147, 26, 0.2);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(247, 147, 26, 0.3);
}

.btn.secondary {
    color: var(--text-main);
    margin-left: 16px;
    border: 1px solid var(--border);
}

.btn.secondary:hover {
    background: rgba(255,255,255,0.05);
}

/* Cards & Sections */
/*.section { padding: 100px 0; }*/
.section { padding: 50px 0; }

.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 60px;
    border-radius: 24px;
}

h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 32px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
}

.loc-item { margin-bottom: 24px; }
.loc-item strong { display: block; color: var(--primary); font-size: 0.9rem; text-transform: uppercase; margin-bottom: 4px; }
.loc-item span { color: var(--text-dim); }

/* Speakers */
.speaker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 32px;
}

.speaker-card {
    text-align: center;
}

.img-wrapper {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.speaker-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.5s;
}

.speaker-card:hover img {
    transform: scale(1.05);
}

.speaker-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.speaker-card span { font-size: 0.85rem; color: var(--text-dim); }

/* Schedule */
.schedule-item {
    display: flex;
    align-items: center;
    padding: 32px 0;
    border-bottom: 1px solid var(--border);
}

.schedule-item .date {
    min-width: 100px;
    font-weight: 700;
    color: var(--primary);
}

.schedule-item .date span {
    display: block;
    font-size: 2rem;
    line-height: 1;
    color: var(--primary);
}

.schedule-item h3 { font-size: 1.3rem; margin-bottom: 4px; }
.schedule-item p { color: var(--text-dim); }

.details h3 a, 
.details h3 a:visited {
    color: var(--text-main); /* Mantiene el tono blanco/claro por defecto y tras la visita */
    text-decoration: none;   /* Elimina el subrayado predeterminado de los enlaces */
    transition: color 0.3s ease; /* Suaviza la transición al pasar el ratón */
}

.details h3 a:hover {
    color: var(--primary);   /* Cambia al naranja Bitcoin al pasar el ratón */
}

.bitalks-special {
    background: linear-gradient(90deg, rgba(247, 147, 26, 0.1), transparent);
    padding: 40px;
    border-radius: 16px;
    border-bottom: none;
    margin-top: 24px;
}

/* Footer */
footer {
    padding: 60px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-dim);
    font-size: 0.9rem;
}

/* Menu */

/* --- Botón Menú Móvil (Fuera del @media) --- */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    margin: 5px 0;
    transition: 0.3s ease;
    border-radius: 3px;
}

/* --- Reglas unificadas para móviles (menos de 768px) --- */
@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .hero { padding: 80px 0; }

    .mobile-menu-btn {
        display: block; /* Mostramos el botón en móvil */
    }

    nav ul {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%; /* Justo debajo de la cabecera */
        left: 0;
        width: 100%;
        background: rgba(10, 11, 16, 0.98); /* Fondo casi opaco */
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        padding: 0;
        max-height: 0; /* Oculto por defecto */
        overflow: hidden;
        transition: max-height 0.4s ease-in-out, padding 0.4s ease;
        gap: 0;
    }

    /* Clase que añade JS al hacer clic para abrir el menú */
    nav ul.active {
        max-height: 400px;
        padding: 15px 0;
    }

    nav ul li {
        width: 100%;
        text-align: center;
    }

    nav ul a {
        display: block;
        padding: 15px 0;
        font-size: 1.1rem;
    }

    /* Animación: la hamburguesa se convierte en una X */
    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* --- Sección Mapas */
.map-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 24px;
	margin-top: 40px;
}
.map-item {
	background: var(--bg-card);
	border: 1px solid var(--border);
	border-radius: 16px;
	overflow: hidden;
	padding: 16px;
}
.map-item iframe {
	width: 100%;
	height: 200px;
	border-radius: 8px;
	border: 0;
	filter: brightness(0.8) contrast(0.9);
}
.map-item h3 { font-size: 1rem; margin: 12px 0 4px; color: var(--primary); }
.map-item p { font-size: 0.85rem; color: var(--text-dim); }

/* --- Sección Comité Organizador --- */

.comite-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columnas del mismo tamaño */
    gap: 30px;
    text-align: center;
    padding: 20px 0;
}

.comite-item h3 {
    color: var(--text-main);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.comite-item p {
    color: var(--primary); /* Naranja de acento */
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 0;
}

/* En móviles, se apilan verticalmente para no cortarse */
@media (max-width: 768px) {
    .comite-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* --- Sección Contacto Integrada (Sin Card) --- */

.contact-title {
    text-align: center;
    margin-bottom: 60px;
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -1px;
}

.contact-grid-integrated {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 20px 0;
}

.contact-item {
    text-align: left; /* Alineado a la izquierda para un look más moderno e integrado */
}

.contact-item h3 {
    color: var(--primary);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.contact-item p {
    color: var(--text-dim);
    font-size: 1rem;
    line-height: 1.7;
    border-left: 1px solid var(--border); /* Una línea sutil para separar visualmente */
    padding-left: 20px;
}

.contact-link {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-link:hover {
    color: var(--primary);
    padding-left: 5px; /* Pequeño efecto de desplazamiento al pasar el ratón */
}

/* Responsividad para móviles */
@media (max-width: 768px) {
    .contact-grid-integrated {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .contact-item {
        text-align: center;
    }
    
    .contact-item p {
        border-left: none;
        border-top: 1px solid var(--border);
        padding-left: 0;
        padding-top: 20px;
    }
}