/* ===================================
   CONGRESO VIRTUOSA 2026
   Premium Landing Page Styles
   =================================== */

/* Color Palette */
:root {
    --primary-royal: #13103F;
    --dark-bg: #151431;
    --white-contrast: #fefefe;
    --soft-neutral: #6b6a7a;
    --secondary-text: #3d3b4f;
    
    /* Blue accent colors matching logo */
    --accent-blue: #13103f;  /* Royal blue from logo */
    --accent-sky: #4A90E2;   /* Sky blue accent */
    --accent-light-blue: #6BA3E8;  /* Light blue for highlights */
    --warm-cream: #f5f3f0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #13103F 0%, #1a1654 100%);
    --gradient-blue: linear-gradient(135deg, #2B5B9E 0%, #4A90E2 100%);
    --gradient-soft: linear-gradient(135deg, #f5f3f0 0%, #ffffff 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.6) 100%);
    
    /* Shadows */
    --shadow-soft: 0 10px 40px rgba(19, 16, 63, 0.08);
    --shadow-medium: 0 15px 50px rgba(19, 16, 63, 0.12);
    --shadow-strong: 0 20px 60px rgba(19, 16, 63, 0.18);
    --glow-soft: 0 0 30px rgba(43, 91, 158, 0.15);
    --glow-blue: 0 0 30px rgba(74, 144, 226, 0.25);
}

/* Elegant Event Dates Cards */
.event-dates {
    background: var(--white-contrast);
}

.date-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    align-items: stretch;
}

.date-card {
    position: relative;
    background: linear-gradient(135deg, #ffffff 0%, #f9f7f3 100%);
    border: 2px solid var(--accent-blue);
    border-radius: 22px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.date-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(43, 91, 158, 0.25), 0 0 40px rgba(43, 91, 158, 0.15);
    border-color: var(--primary-royal);
}

.date-card::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 70%;
    height: 140%;
    background: radial-gradient(circle, rgba(212,175,55,0.18) 0%, transparent 70%);
    transform: rotate(25deg);
}

.date-icon {
    width: 74px;
    height: 74px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-contrast);
    font-size: 1.6rem;
    box-shadow: 0 10px 26px rgba(19, 16, 63, 0.18);
    transition: all 0.3s ease;
}

.date-card:hover .date-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 35px rgba(19, 16, 63, 0.3);
}

.date-label {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--primary-royal);
    margin-bottom: 8px;
    font-weight: 700;
}

.date-time {
    font-size: 1.3rem;
    color: var(--secondary-text);
    font-weight: 600;
    letter-spacing: 0.6px;
    transition: color 0.3s ease;
}

.date-card:hover .date-time {
    color: var(--accent-blue);
}

/* Inline CTA Styling */
.cta-inline {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 50px;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .date-cards {
        grid-template-columns: 1fr;
    }
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    /* Subtle, premium background blending brand and accent tones */
    background:
        radial-gradient(1200px 800px at -10% -10%, rgba(43, 91, 158, 0.06), transparent 60%),
        radial-gradient(1000px 700px at 110% 10%, rgba(200, 182, 212, 0.07), transparent 65%),
        radial-gradient(900px 600px at 50% 120%, rgba(232, 180, 184, 0.06), transparent 60%),
        linear-gradient(180deg, #fefefe 0%, #f5f3f0 100%);
}

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.8;
    color: var(--secondary-text);
    background: transparent;
    overflow-x: hidden;
    letter-spacing: 0.3px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    color: var(--primary-royal);
    font-weight: 600;
    line-height: 1.3;
}

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

/* ===================================
   HEADER
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 5px 30px rgba(19, 16, 63, 0.1);
    border-bottom: 1px solid rgba(175, 174, 189, 0.2);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
}

.header-logo img {
    height: 80px;
    width: auto;
    transition: transform 0.3s ease;
    background: transparent;
    mix-blend-mode: multiply;
}

.header-logo img:hover {
    transform: scale(1.05);
}

.header-nav {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    color: var(--white-contrast);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    letter-spacing: 0.5px;
    position: relative;
    transition: all 0.3s ease;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header.scrolled .nav-link {
    color: var(--primary-royal);
    text-shadow: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Elegant Language Switcher */
.language-switcher {
    display: flex;
    gap: 10px;
    background: transparent;
    padding: 6px;
    border-radius: 36px;
    align-items: center;
}

.header.scrolled .language-switcher {
    background: transparent;
}

.lang-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    width: 50px;
    height: 50px;
    background: var(--white-contrast);
    border: 2px solid rgba(19, 16, 63, 0.15);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--primary-royal);
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
    position: relative;
    overflow: hidden;
}

.lang-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(43, 91, 158, 0.15), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.header.scrolled .lang-btn {
    color: var(--primary-royal);
}

.lang-btn.active {
    background: var(--accent-blue);
    color: var(--primary-royal);
    border-color: var(--accent-blue);
    border-width: 3px;
    box-shadow: 0 8px 24px rgba(43, 91, 158, 0.45), var(--glow-soft);
    transform: scale(1.05);
}

.lang-btn.active::before {
    opacity: 1;
}

.lang-btn:hover:not(.active) {
    transform: translateY(-2px) scale(1.1);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
    border-color: var(--accent-blue);
}

.lang-btn:hover::before {
    opacity: 0.5;
}

.header.scrolled .lang-btn:hover:not(.active) {
    transform: translateY(-2px) scale(1.1);
}

.flag-icon {
    width: 28px;
    height: 28px;
    transition: all 0.3s ease;
    border-radius: 4px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.lang-btn:hover .flag-icon {
    transform: scale(1.1);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

.lang-btn.active .flag-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(43, 91, 158, 0.4);
}

.mobile-lang-btn .flag-icon {
    width: 32px;
    height: 32px;
}

.header-cta {
    padding: 12px 28px;
    background: var(--accent-blue);
    color: var(--white-contrast);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(43, 91, 158, 0.3);
}

.header-cta:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(43, 91, 158, 0.4);
    filter: brightness(1.05);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--white-contrast);
    cursor: pointer;
}

.header.scrolled .mobile-menu-toggle {
    color: var(--primary-royal);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: var(--white-contrast);
    box-shadow: -10px 0 40px rgba(19, 16, 63, 0.15);
    z-index: 2000;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

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

.mobile-menu-content {
    padding: 40px 30px;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--primary-royal);
    cursor: pointer;
    margin-bottom: 40px;
    transition: transform 0.3s ease;
}

.mobile-menu-close:hover {
    transform: rotate(90deg);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.mobile-nav-link {
    color: var(--primary-royal);
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(175, 174, 189, 0.2);
    transition: all 0.3s ease;
}

.mobile-nav-link:hover {
    color: var(--accent-blue);
    padding-left: 15px;
}

.mobile-lang-switcher {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.mobile-lang-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    padding: 0;
    background: var(--warm-cream);
    border: 3px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--primary-royal);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mobile-lang-btn:hover {
    transform: scale(1.1);
    border-color: var(--accent-blue);
    box-shadow: 0 6px 18px rgba(43, 91, 158, 0.3);
}

.mobile-lang-btn.active {
    background: var(--accent-blue);
    color: var(--white-contrast);
    border-color: var(--accent-blue);
    border-width: 4px;
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(43, 91, 158, 0.4);
}

/* Music Control */
.music-control {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 60px;
    height: 60px;
    background: var(--primary-royal);
    color: var(--white-contrast);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    z-index: 999;
    box-shadow: 0 8px 25px rgba(19, 16, 63, 0.3);
    transition: all 0.3s ease;
}

.music-control:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(19, 16, 63, 0.4);
}

.music-control.muted {
    background: var(--soft-neutral);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 150px 0 100px;
    text-align: center;
}

.hero-inner {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--white-contrast);
    margin-bottom: 25px;
    text-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
    letter-spacing: -1px;
    position: relative;
}

.hero-title::after {
    content: '';
    display: block;
    width: 160px;
    height: 3px;
    margin: 14px auto 0;
    border-radius: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--accent-blue) 15%, var(--accent-blue) 85%, transparent 100%);
    box-shadow: 0 0 20px rgba(43, 91, 158, 0.35);
}

.hero-free-badge {
    margin: 25px 0;
    display: flex;
    justify-content: center;
}

.hero-free-badge span {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    color: var(--white-contrast);
    font-size: 1.4rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 12px 35px;
    border-radius: 50px;
    border: 3px solid var(--white-contrast);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.4), 0 10px 40px rgba(0, 0, 0, 0.3);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    animation: pulse-badge 3s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 30px rgba(255, 255, 255, 0.4), 0 10px 40px rgba(0, 0, 0, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 45px rgba(255, 255, 255, 0.6), 0 15px 50px rgba(0, 0, 0, 0.4);
    }
}

.hero-subtitle {
    font-size: 2.8rem;
    font-weight: 400;
    color: var(--white-contrast);
    margin-bottom: 30px;
    text-shadow: 0 3px 20px rgba(0, 0, 0, 0.4);
    font-style: italic;
}

.hero-tagline {
    font-size: 1.4rem;
    color: var(--white-contrast);
    margin-bottom: 20px;
    font-weight: 300;
    letter-spacing: 1px;
    opacity: 0.95;
}

.hero-support {
    font-size: 1.2rem;
    color: var(--soft-neutral);
    margin-bottom: 40px;
    font-weight: 300;
    font-style: italic;
}

.hero-emotional {
    margin: 50px 0;
    padding: 40px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.hero-emotional p {
    font-size: 1.5rem;
    font-style: italic;
    color: var(--white-contrast);
    line-height: 1.9;
    font-family: 'Playfair Display', serif;
    font-weight: 400;
}

.hero-ctas {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 50px;
}

.btn-primary,
.btn-secondary {
    padding: 18px 45px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--white-contrast);
    box-shadow: 0 10px 35px rgba(43, 91, 158, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 45px rgba(43, 91, 158, 0.5);
    filter: brightness(1.05);
}

.btn-secondary {
    background: transparent;
    color: #2B5B9E;
    border: 2px solid #2B5B9E;
}

.btn-secondary:hover {
    background: #2B5B9E;
    color: var(--white-contrast);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 45px rgba(43, 91, 158, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--white-contrast);
    opacity: 0.8;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-15px);
    }
    60% {
        transform: translateX(-50%) translateY(-8px);
    }
}

/* ===================================
   SECTION STYLES
   =================================== */

section {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(43, 91, 158, 0.03) 0%, transparent 70%);
    pointer-events: none;
    animation: float-glow 20s ease-in-out infinite;
}

@keyframes float-glow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 30px) scale(1.1); }
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-title {
    font-size: 3rem;
    color: var(--primary-royal);
    margin-bottom: 25px;
    font-weight: 600;
    line-height: 1.3;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--accent-blue);
    transition: width 0.6s ease;
}

.section-header:hover .section-title::after {
    width: 120px;
}

.section-divider {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
    margin: 25px auto;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--secondary-text);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.9;
    font-style: italic;
}

/* ===================================
   ABOUT EVENT SECTION
   =================================== */

.about-event {
    background: var(--gradient-soft);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 70px;
    align-items: center;
}

.about-text p {
    font-size: 1.15rem;
    line-height: 2;
    margin-bottom: 30px;
    color: var(--secondary-text);
}

.about-image {
    position: relative;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow-strong);
}

.about-image img {
    width: 100%;
    height: auto;
    transition: transform 0.6s ease;
}

.about-image:hover img {
    transform: scale(1.08);
}

.about-video {
    position: relative;
    border-radius: 15px;
    overflow: visible !important;
    box-shadow: var(--shadow-strong);
    background: #000;
}

.about-video video {
    width: 100% !important;
    max-width: 100% !important;
    display: block !important;
    object-fit: contain;
    transition: transform 0.3s ease;
    margin: 0 auto;
    border-radius: 15px;
    background: #000;
    position: relative;
    z-index: 1;
}

.about-video video::-webkit-media-controls {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.about-video video::-webkit-media-controls-enclosure {
    display: flex !important;
    opacity: 1 !important;
}

.about-video video:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 4px;
}

.about-video:hover video {
    transform: none;
}

/* Custom Video Controls Styling */
.about-video video::-webkit-media-controls-panel {
    background: linear-gradient(to top, rgba(19, 16, 63, 0.9), transparent);
}

.about-video video::-webkit-media-controls-play-button,
.about-video video::-webkit-media-controls-mute-button {
    background-color: var(--accent-blue);
    border-radius: 50%;
}

.about-video video::-webkit-media-controls-timeline {
    background-color: rgba(43, 91, 158, 0.3);
    border-radius: 5px;
}

.about-video video::-webkit-media-controls-current-time-display,
.about-video video::-webkit-media-controls-time-remaining-display {
    color: var(--white-contrast);
}

.image-glow,
.video-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(43, 91, 158, 0.15) 0%, transparent 70%);
    animation: rotate-glow 25s linear infinite;
    z-index: 0;
    pointer-events: none;
}

@keyframes rotate-glow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===================================
   WHY MATTERS SECTION
   =================================== */

.why-matters {
    background: var(--white-contrast);
}

.matters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.matter-card {
    background: var(--white-contrast);
    padding: 45px 35px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(175, 174, 189, 0.15);
}

.matter-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-strong), 0 0 30px rgba(43, 91, 158, 0.2);
    border-color: var(--accent-blue);
    background: linear-gradient(135deg, #ffffff 0%, #fefdfb 100%);
}

.matter-icon {
    width: 88px;
    height: 88px;
    margin: 0 auto 30px;
    background: var(--white-contrast);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-royal);
    font-size: 2.2rem;
    box-shadow: 0 10px 26px rgba(19, 16, 63, 0.12);
    position: relative;
    border: 2px solid var(--accent-blue);
}

.matter-icon::after {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    border-radius: 50%;
    background: radial-gradient(closest-side, rgba(43, 91, 158, 0.25), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.matter-card:hover .matter-icon::after {
    opacity: 1;
}

.matter-icon::before {
    content: '';
    position: absolute;
    inset: 6px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(43, 91, 158, 0.12), transparent 60%);
    pointer-events: none;
}

.matter-icon i {
    font-size: 2rem;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,0.15));
}

.matter-card:hover .matter-icon {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(19, 16, 63, 0.18);
}

.matter-card h3 {
    font-size: 1.4rem;
    margin-bottom: 18px;
    color: var(--primary-royal);
}

.matter-card p {
    color: var(--secondary-text);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* ===================================
   SPECIAL GUEST SECTION
   =================================== */

.special-guest {
    background: var(--gradient-soft);
}

.guest-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 80px;
    align-items: center;
}

.guest-image-wrapper {
    position: relative;
}

.guest-circle {
    position: relative;
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    aspect-ratio: 1;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 25px 70px rgba(19, 16, 63, 0.25);
    border: 8px solid var(--white-contrast);
    background: var(--white-contrast);
}

.guest-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.guest-circle:hover img {
    transform: scale(1.1);
}

.circle-glow {
    position: absolute;
    top: -20%;
    left: -20%;
    width: 140%;
    height: 140%;
    background: radial-gradient(circle, rgba(43, 91, 158, 0.2) 0%, transparent 60%);
    animation: pulse-glow 4s ease-in-out infinite;
    z-index: -1;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 1; }
}

.guest-name {
    font-size: 3rem;
    color: var(--primary-royal);
    margin-bottom: 35px;
    font-weight: 600;
}

.bio-content p {
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 28px;
    color: var(--secondary-text);
}

.bio-highlight {
    background: linear-gradient(135deg, rgba(43, 91, 158, 0.08) 0%, rgba(200, 182, 212, 0.08) 100%);
    padding: 35px;
    border-radius: 18px;
    margin: 35px 0;
    border-left: 5px solid var(--accent-blue);
    box-shadow: var(--shadow-soft);
}

.bio-highlight p {
    margin-bottom: 0;
}

.bio-closing {
    font-style: italic;
    font-size: 1.25rem;
    color: var(--primary-royal);
    margin-top: 35px;
    font-weight: 500;
}

/* ===================================
   EVENT REPRESENTATION SECTION
   =================================== */

.event-representation {
    background: var(--white-contrast);
}

.representation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.rep-card {
    position: relative;
    border-radius: 25px;
    overflow: hidden;
    aspect-ratio: 1/1;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
}

.rep-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.rep-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(19, 16, 63, 0.9) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    display: flex;
    align-items: flex-end;
    padding: 40px;
}

.rep-card:hover .rep-overlay {
    opacity: 1;
}

.rep-card:hover img {
    transform: scale(1.1);
}

.rep-card video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.rep-card:hover video {
    transform: scale(1.1);
}

.rep-content h3 {
    color: var(--white-contrast);
    font-size: 2rem;
    margin-bottom: 12px;
}

.rep-content p {
    color: var(--soft-neutral);
    font-size: 1.1rem;
}

.representation-values {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    padding: 50px 0;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 35px;
    background: var(--warm-cream);
    border-radius: 50px;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, var(--warm-cream) 0%, #ffffff 100%);
}

.value-item i {
    color: var(--accent-blue);
    font-size: 1.5rem;
}

.value-item span {
    color: var(--primary-royal);
    font-weight: 600;
    font-size: 1.05rem;
}

/* ===================================
   EVENT DETAILS SECTION
   =================================== */

.event-details {
    background: var(--gradient-soft);
}

.details-frame {
    background: var(--white-contrast);
    border-radius: 30px;
    padding: 60px;
    box-shadow: var(--shadow-strong);
    border: 3px solid var(--accent-blue);
    position: relative;
    overflow: hidden;
}

.details-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-lavender), var(--accent-rose));
}

.details-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.detail-item {
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.detail-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-contrast);
    font-size: 1.8rem;
    flex-shrink: 0;
    box-shadow: 0 8px 25px rgba(19, 16, 63, 0.2);
}

.detail-info h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-royal);
}

.detail-info p {
    color: var(--secondary-text);
    line-height: 1.8;
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.detail-atmosphere {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    background: var(--warm-cream);
    border-radius: 20px;
    margin-top: 30px;
}

.detail-atmosphere p {
    font-size: 1.2rem;
    color: var(--primary-royal);
    font-style: italic;
    line-height: 1.9;
}

.map-container {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    margin-top: 40px;
}

.map-container iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* ===================================
   PREVIOUS EVENTS GALLERY
   =================================== */

.previous-events {
    background: var(--white-contrast);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
}

.gallery-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-strong), 0 0 25px rgba(43, 91, 158, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.gallery-item:hover img {
    transform: scale(1.15);
}

/* ===================================
   REGISTRATION FORM
   =================================== */

.registration {
    background: var(--gradient-soft);
}

.registration-form-wrapper {
    max-width: 750px;
    margin: 0 auto;
    background: var(--white-contrast);
    padding: 60px;
    border-radius: 30px;
    box-shadow: var(--shadow-strong);
    border: 2px solid var(--accent-blue);
}

.registration-form {
    position: relative;
}

.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-royal);
    font-size: 1.05rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 22px;
    border: 2px solid var(--soft-neutral);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Montserrat', sans-serif;
    transition: all 0.3s ease;
    background: var(--white-contrast);
    color: var(--secondary-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(43, 91, 158, 0.1);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #dc3545;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.submit-btn {
    width: 100%;
    padding: 20px;
    background: var(--gradient-primary);
    color: var(--white-contrast);
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: 0 10px 35px rgba(19, 16, 63, 0.3);
    letter-spacing: 0.5px;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 45px rgba(19, 16, 63, 0.4);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-message {
    margin-top: 25px;
    padding: 18px;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* ===================================
   FINAL CTA SECTION
   =================================== */

.final-cta {
    padding: 150px 0;
    background: url('images/congresopost.jpeg') center/cover fixed;
    position: relative;
    text-align: center;
}

.cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(19, 16, 63, 0.92) 0%, rgba(21, 20, 49, 0.88) 100%);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 3.2rem;
    color: var(--white-contrast);
    margin-bottom: 30px;
    line-height: 1.4;
    font-weight: 600;
}

.cta-content p {
    font-size: 1.4rem;
    color: var(--white-contrast);
    margin-bottom: 50px;
    line-height: 1.9;
    font-style: italic;
}

.cta-btn-large {
    display: inline-block;
    padding: 24px 65px;
    background: var(--accent-blue);
    color: var(--white-contrast);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
    transition: all 0.4s ease;
    box-shadow: 0 15px 45px rgba(43, 91, 158, 0.4);
}

.cta-btn-large:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 55px rgba(43, 91, 158, 0.5);
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background: var(--dark-bg);
    color: var(--soft-neutral);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand img {
    height: 70px;
    width: auto;
    margin-bottom: 25px;
}

.footer-brand h3 {
    color: var(--white-contrast);
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--soft-neutral);
    font-style: italic;
    font-size: 1.1rem;
}

.footer-info h4,
.footer-social h4 {
    color: var(--white-contrast);
    margin-bottom: 25px;
    font-size: 1.3rem;
}

.footer-info p {
    margin-bottom: 12px;
    line-height: 1.9;
}

.footer-info i {
    margin-right: 12px;
    color: var(--accent-blue);
}

.footer-info a {
    color: var(--white-contrast);
    text-decoration: none;
}

.footer-info a:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

.social-links {
    display: flex;
    gap: 18px;
}

.social-links a {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-contrast);
    font-size: 1.3rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-blue);
    color: var(--primary-royal);
    transform: scale(1.05);
    box-shadow: 0 8px 28px rgba(43, 91, 158, 0.35), var(--glow-soft);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--soft-neutral);
    font-size: 0.95rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
    .header-logo img {
        height: 70px;
    }
    .header-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 2.2rem;
    }
    
    .about-content,
    .guest-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .representation-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-logo img {
        height: 60px;
    }
    .container {
        padding: 0 20px;
    }
    
    section {
        padding: 80px 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.8rem;
    }
    
    .hero-emotional p {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .matters-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .registration-form-wrapper,
    .details-frame {
        padding: 40px 25px;
    }
    
    .cta-content h2 {
        font-size: 2.2rem;
    }
    
    .music-control {
        width: 50px;
        height: 50px;
        bottom: 20px;
        left: 20px;
    }
}

@media (max-width: 480px) {
    .header-logo img {
        height: 50px;
    }
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .guest-name {
        font-size: 2.2rem;
    }
}