/* ==========================================================================
   Variables & Design Tokens
   ========================================================================== */
   :root {
    /* Colors */
    --clr-primary-navy: #193354;
    --clr-primary-navy-light: #2c4c73;
    --clr-accent-sky: #346a94;
    --clr-accent-sky-hover: #5398be;
    --clr-silver: #99aab8;
    --clr-white: #FFFFFF;
    --clr-gray-100: #F3F4F6;
    --clr-gray-300: #D1D5DB;
    --clr-gray-800: #1F2937;
    --clr-text-main: #334155;
    --clr-text-muted: #64748B;
    
    /* Typography */
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Effects */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(10, 25, 47, 0.05);
    
    --glass-bg-dark: rgba(10, 25, 47, 0.75);
    --glass-border-dark: rgba(255, 255, 255, 0.1);
    --glass-shadow-dark: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* For fixed navbar */
}

body {
    font-family: var(--font-main);
    color: var(--clr-text-main);
    background-color: var(--clr-gray-100);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--clr-primary-navy);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--clr-accent-sky);
    border-radius: 2px;
}

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

.text-center.section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

.bg-light {
    background-color: var(--clr-white);
}

/* Glassmorphism Classes */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 16px;
}

.glass-nav {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

/* Buttons */
.btn-cta {
    display: inline-block;
    background-color: var(--clr-accent-sky);
    color: var(--clr-white);
    font-weight: 600;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    letter-spacing: 0.5px;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    text-transform: uppercase;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-cta:hover {
    background-color: var(--clr-accent-sky-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
    color: var(--clr-white);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    padding: 1.2rem 0;
}

.navbar.scrolled {
    padding: 0.8rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    display: inline-flex;
    align-items: center;
}

.logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
    /* Ligero escalado por si trae bordes blancos */
    transform: scale(1.2);
    transform-origin: center left;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--clr-primary-navy);
    position: relative;
}

.mobile-cta-item {
    display: none !important;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--clr-accent-sky);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--clr-primary-navy);
    cursor: pointer;
}

@keyframes bgBlueEffect {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 2rem 0; /* Añadido padding-top para que no lo tape el menú */
    background: linear-gradient(-45deg, #ffffff, #e0f2fe, #f0f9ff, #ffffff);
    background-size: 400% 400%;
    animation: bgBlueEffect 12s ease infinite;
    overflow: hidden;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    color: var(--clr-primary-navy);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    opacity: 0;
    animation: titleReveal 0.8s ease forwards;
}

#type-subtitle {
    display: block;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 500;
    margin-top: 0.5rem;
    color: var(--clr-primary-navy-light) !important;
    min-height: 1.2em;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--clr-text-main);
    max-width: 800px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
}

/* Decorative elements for the hero background */
/* ==========================================================================
   Fondo Mesh Gradient Neón Claro (Hero)
   ========================================================================== */
.colombia-hero-bg {
    position: absolute;
    top: -10%; 
    left: -10%; 
    width: 120%; 
    height: 120%;
    z-index: 0;
    background: linear-gradient(to bottom, 
        rgba(255, 235, 59, 0.65) 0%, 
        rgba(255, 235, 59, 0.65) 50%, 
        rgba(0, 176, 255, 0.55) 50%, 
        rgba(0, 176, 255, 0.55) 75%, 
        rgba(255, 82, 82, 0.55) 75%, 
        rgba(255, 82, 82, 0.55) 100%);
    filter: blur(40px);
    animation: waveFlagScreen 8s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes waveFlagScreen {
    0% { transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) scale(1) skewY(-1deg); }
    50% { transform: perspective(1000px) rotateX(-1deg) rotateY(1deg) scale(1.02) translate(0, -2%) skewY(0deg); }
    100% { transform: perspective(1000px) rotateX(2deg) rotateY(3deg) scale(1.05) translate(0, 2%) skewY(1deg); }
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(10,25,47,0.05) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

@keyframes titleReveal {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes subtitleReveal {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes blinkCursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.cursor {
    display: inline-block;
    color: var(--clr-accent-sky);
    font-weight: 300;
    animation: blinkCursor 1.2s infinite;
    margin-left: 2px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    color: var(--clr-primary-navy);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    opacity: 0;
    animation: titleReveal 0.8s ease forwards;
}

#type-subtitle {
    opacity: 0;
    animation: subtitleReveal 1s ease-out 1.2s forwards;
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--clr-text-main);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   El Seminario Section
   ========================================================================== */
.seminario {
    position: relative;
}

.seminario-content {
    padding: 3rem;
    font-size: 1.1rem;
}

.seminario-content p {
    margin-bottom: 1.5rem;
}

.seminario-content p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   Ejes Temáticos Section
   ========================================================================== */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.eje-card {
    padding: 2.5rem 2rem;
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.eje-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(10, 25, 47, 0.1);
}

.eje-card .icon-wrapper {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--clr-primary-navy) 0%, var(--clr-accent-sky) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-white);
    font-size: 1.8rem;
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.2);
}

.eje-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--clr-primary-navy);
}

.eje-card p {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
}

.slider-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--clr-white);
    color: var(--clr-primary-navy);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    z-index: 10;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-btn:hover {
    background: var(--clr-primary-navy);
    color: var(--clr-white);
}

#slideLeft, #topicsSlideLeft {
    left: -25px;
}

#slideRight, #topicsSlideRight {
    right: -25px;
}

.slider-container {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 2.5rem;
    padding-bottom: 1rem;
    padding-top: 1rem;
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}

.slider-container::-webkit-scrollbar {
    display: none;
}

.slider-container > .speaker-card,
.slider-container > .eje-card {
    flex: 0 0 320px;
    scroll-snap-align: start;
}

.speaker-card {
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    group: hover;
}

.speaker-img {
    height: 300px;
    width: 100%;
    background-color: var(--clr-gray-300);
    overflow: hidden;
    position: relative;
}

.img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--clr-white);
    background: linear-gradient(135deg, var(--clr-primary-navy-light) 0%, var(--clr-primary-navy) 100%);
}

.speaker-info {
    padding: 2rem;
    margin: -40px 1.5rem 0;
    position: relative;
    z-index: 2;
    text-align: center;
}

.speaker-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.3rem;
}

.speaker-role {
    color: var(--clr-accent-sky);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.speaker-desc {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
}

/* ==========================================================================
   Pre-Footer CTA
   ========================================================================== */
.pre-footer {
    background-color: var(--clr-primary-navy);
    color: var(--clr-white);
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.pre-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" opacity="0.05"><path d="M0 100 L100 0 L100 100 Z" fill="%23FFFFFF"/></svg>') repeat;
}

.pre-footer .container {
    position: relative;
    z-index: 1;
}

.pre-footer h2 {
    color: var(--clr-white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.pre-footer p {
    font-size: 1.1rem;
    color: var(--clr-gray-300);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--clr-primary-navy-light);
    color: var(--clr-gray-300);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: var(--clr-white);
    display: inline-block;
    margin-bottom: 0.5rem;
}

.footer-brand .logo-img {
    height: 75px;
    transform: scale(1.1);
    transform-origin: center left;
}

.footer-contact h4 {
    color: var(--clr-white);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-contact p {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.footer-contact i {
    color: var(--clr-accent-sky);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* ==========================================================================
   Agenda Section
   ========================================================================== */
.agenda-table-wrapper {
    overflow-x: auto;
    padding: 0;
}

.agenda-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.agenda-table th, .agenda-table td {
    padding: 1.2rem;
    border-bottom: 1px solid var(--glass-border);
}

.agenda-table th {
    background-color: var(--clr-primary-navy);
    color: var(--clr-white);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.agenda-table td.time {
    font-weight: 700;
    color: var(--clr-accent-sky);
    white-space: nowrap;
    width: 100px;
}

.agenda-table tr.receso {
    background-color: rgba(14, 165, 233, 0.05);
    font-style: italic;
    color: var(--clr-text-muted);
}

.agenda-table tbody tr:last-child td {
    border-bottom: none;
}

/* ==========================================================================
   Colombia Flag Bar
   ========================================================================== */
.colombia-flag-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    z-index: 1001;
    background: linear-gradient(to right, #FFCD00 0%, #FFCD00 50%, #003087 50%, #003087 75%, #C8102E 75%, #C8102E 100%);
}

/* ==========================================================================
   Animations (Fade in up)
   ========================================================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 992px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--glass-bg);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 2rem 0;
        box-shadow: var(--glass-shadow);
        border-bottom: 1px solid var(--glass-border);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
    
    .mobile-cta-item {
        display: block !important;
        margin-top: 1.5rem;
        width: 100%;
        text-align: center;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }
    
    .seminario-content {
        padding: 2rem 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
}

/* ==========================================================================
   Custom Video Player
   ========================================================================== */
.custom-video-container {
    position: relative;
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    background-color: #000;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(10, 25, 47, 0.95), transparent);
    padding: 20px 15px 10px;
    display: flex;
    align-items: center;
    gap: 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.custom-video-container:hover .video-controls,
.custom-video-container.paused .video-controls {
    opacity: 1;
}

.control-btn {
    background: none;
    border: none;
    color: var(--clr-white);
    font-size: 1.1rem;
    cursor: pointer;
    transition: color 0.2s ease;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
}

.control-btn:hover {
    color: var(--clr-accent-sky);
}

.progress-bar-container {
    flex-grow: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: var(--clr-accent-sky);
    border-radius: 3px;
    width: 0%;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    right: -5px;
    top: -4px;
    width: 14px;
    height: 14px;
    background: var(--clr-white);
    border-radius: 50%;
    box-shadow: 0 0 5px rgba(0,0,0,0.5);
    opacity: 0;
    transition: opacity 0.2s;
}

.progress-bar-container:hover .progress-bar::after {
    opacity: 1;
}

.time-display {
    color: var(--clr-white);
    font-size: 0.85rem;
    font-family: monospace;
    min-width: 80px;
    text-align: center;
}

.volume-slider {
    width: 80px;
    cursor: pointer;
    accent-color: var(--clr-accent-sky);
    height: 4px;
}

/* ==========================================================================
   Cool Text Animations
   ========================================================================== */
@keyframes blurInExpand {
    0% { filter: blur(10px); opacity: 0; transform: scale(0.95) translateY(20px); }
    100% { filter: blur(0); opacity: 1; transform: scale(1) translateY(0); }
}

.blur-in-expand {
    opacity: 0;
    animation: blurInExpand 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes textShineSweep {
    0% { background-position: 200% center; }
    100% { background-position: -200% center; }
}

.text-gradient-shine {
    background: linear-gradient(
        120deg,
        var(--clr-primary-navy) 20%,
        var(--clr-accent-sky) 40%,
        #00ffff 50%,
        var(--clr-accent-sky) 60%,
        var(--clr-primary-navy) 80%
    );
    background-size: 200% auto;
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    animation: textShineSweep 4s linear infinite;
    display: inline-block;
}