/* =====================================================
   conversacIAnes - Estilos principales
   ===================================================== */

/* Variables */
:root {
    /* Colores */
    --color-bg: #0a0a0f;
    --color-bg-alt: #12121a;
    --color-bg-card: #16161f;
    --color-text: #e8e8ed;
    --color-text-muted: #8888a0;
    --color-accent: #00d4aa;
    --color-accent-hover: #00f5c4;
    --color-accent-glow: rgba(0, 212, 170, 0.3);
    --color-warm: #ff6b4a;
    --color-warm-glow: rgba(255, 107, 74, 0.3);
    --color-border: rgba(255, 255, 255, 0.08);
    
    /* Tipografía */
    --font-mono: 'IBM Plex Mono', monospace;
    --font-serif: 'Instrument Serif', serif;
    
    /* Espaciado */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.8s ease;
}

/* Reset y base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

/* Fondo con grid */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -1;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Acento IA */
.ia {
    color: var(--color-accent);
    font-style: italic;
    text-shadow: 0 0 30px var(--color-accent-glow);
}

/* =====================================================
   Header
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.btn-nav {
    padding: 0.5rem 1rem;
    background: var(--color-accent);
    color: var(--color-bg) !important;
    border-radius: 4px;
    font-weight: 500;
}

.btn-nav:hover {
    background: var(--color-accent-hover);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* =====================================================
   Hero
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-xl) 0;
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.hero-tag {
    font-size: 0.875rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-subtitle em {
    font-family: var(--font-serif);
    color: var(--color-text);
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px var(--color-accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1rem;
}

/* Hero visual */
.hero-visual {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    padding: 1rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    animation: float 6s ease-in-out infinite;
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 2s;
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.card-3 {
    bottom: 20%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* =====================================================
   Filosofía
   ===================================================== */
.filosofia {
    padding: var(--space-xl) 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.filosofia-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.filosofia-item {
    padding: var(--space-md);
    text-align: center;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.filosofia-item[data-delay="0"] { animation-delay: 0.1s; }
.filosofia-item[data-delay="1"] { animation-delay: 0.2s; }
.filosofia-item[data-delay="2"] { animation-delay: 0.3s; }

.filosofia-icon {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.filosofia-item h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
}

.filosofia-item p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* =====================================================
   Secciones comunes
   ===================================================== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-sm);
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    margin-bottom: var(--space-sm);
}

.section-header p {
    color: var(--color-text-muted);
}

/* =====================================================
   Charlas
   ===================================================== */
.charlas {
    padding: var(--space-xl) 0;
}

.charlas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.charla-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-md);
    position: relative;
    transition: all var(--transition-medium);
    overflow: hidden;
}

.charla-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-warm));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.charla-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.charla-card:hover::before {
    transform: scaleX(1);
}

.charla-num {
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-bg);
    -webkit-text-stroke: 1px var(--color-border);
    margin-bottom: var(--space-sm);
    line-height: 1;
}

.charla-card:hover .charla-num {
    -webkit-text-stroke-color: var(--color-accent);
    color: rgba(0, 212, 170, 0.1);
}

.charla-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
}

.charla-question {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--color-accent);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.charla-desc {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
}

.charla-meta {
    display: flex;
    gap: var(--space-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* =====================================================
   Metodología
   ===================================================== */
.metodologia {
    padding: var(--space-xl) 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.metodologia-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.metodologia-visual {
    display: flex;
    justify-content: center;
}

.time-block {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 250px;
}

.time-segment {
    width: 50px;
    height: calc(var(--size) * 4px + 40px);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 10px 5px;
    transition: all var(--transition-fast);
}

.time-segment:hover,
.time-segment.active {
    border-color: var(--color-accent);
    background: rgba(0, 212, 170, 0.1);
}

.time-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
}

.time-name {
    font-size: 0.625rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 5px;
}

.metodologia-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.metodo-item {
    padding-left: var(--space-md);
    border-left: 2px solid var(--color-border);
    transition: border-color var(--transition-fast);
}

.metodo-item:hover {
    border-left-color: var(--color-accent);
}

.metodo-item h4 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
}

.metodo-item p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* =====================================================
   Ponente
   ===================================================== */
.ponente {
    padding: var(--space-xl) 0;
}

.ponente-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.ponente-image {
    position: sticky;
    top: 120px;
}

.ponente-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-alt) 100%);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 6rem;
    color: var(--color-text-muted);
}

.ponente-info .section-tag {
    margin-bottom: var(--space-xs);
}

.ponente-info h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
}

.ponente-role {
    color: var(--color-accent);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
}

.ponente-bio {
    margin-bottom: var(--space-md);
}

.ponente-bio p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: var(--space-sm);
}

.ponente-bio strong {
    color: var(--color-text);
}

.ponente-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.ponente-tags span {
    padding: 0.5rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* =====================================================
   Contacto
   ===================================================== */
.contacto {
    padding: var(--space-xl) 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.contacto-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contacto h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.contacto p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
}

.footer-content p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer-content a {
    color: var(--color-accent);
    text-decoration: none;
}

.footer-content a:hover {
    text-decoration: underline;
}

.footer-copy {
    text-align: center;
}

.footer-copy p {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* =====================================================
   Animaciones
   ===================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        display: none;
    }
    
    .charlas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .metodologia-content {
        grid-template-columns: 1fr;
    }
    
    .metodologia-visual {
        order: 2;
    }
    
    .ponente-grid {
        grid-template-columns: 1fr;
    }
    
    .ponente-image {
        position: static;
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        padding: var(--space-md);
        flex-direction: column;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .filosofia-grid {
        grid-template-columns: 1fr;
    }
    
    .charlas-grid {
        grid-template-columns: 1fr;
    }
    
    .time-block {
        flex-wrap: wrap;
        justify-content: center;
        height: auto;
    }
}

/* =====================================================
   Scroll animations (activadas por JS)
   ===================================================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}