/* =============================================
   COOLDREAM - CSS OPTIMIZADO Y UNIFICADO
   ============================================= */

/* =============================================
   1. VARIABLES CSS Y CONFIGURACIÓN BASE
   ============================================= */
:root {
    /* Colores */
    --primary: #00D4FF;
    --secondary: #0080FF;
    --accent: #00FFFF;
    --dark: #000000;
    --dark-card: #0a0a0a;
    --dark-hover: #1a1a1a;
    --white: #FFFFFF;
    --gray: #666666;
    --border: rgba(255, 255, 255, 0.1);
    --glow: rgba(0, 212, 255, 0.15);
    
    /* Gradientes */
    --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
    --gradient-text: linear-gradient(135deg, var(--white) 0%, var(--gray) 100%);
    
    /* Sombras */
    --shadow-primary: 0 10px 20px rgba(0, 212, 255, 0.3);
    --shadow-card: 0 25px 50px -12px rgba(0, 212, 255, 0.25);
    
    /* Transiciones */
    --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
}

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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--dark-card);
}

html::-webkit-scrollbar {
    width: 8px;
}

html::-webkit-scrollbar-track {
    background: var(--dark-card);
}

html::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--white);
    overflow-x: hidden;
    line-height: 1.6;
}

/* =============================================
   2. LOADER
   ============================================= */
.loader {
    --delay: 70ms;
    position: fixed;
    inset: 0;
    background: var(--dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader span {
    letter-spacing: -5rem;
    transform: translateY(4rem);
    animation: hideAndSeek 1s alternate infinite cubic-bezier(0.86, 0, 0.07, 1);
}

.loader .l { animation-delay: calc(var(--delay) * 0); }
.loader .o { animation-delay: calc(var(--delay) * 1); }
.loader .a { animation-delay: calc(var(--delay) * 2); }
.loader .d { animation-delay: calc(var(--delay) * 3); }
.loader .ispan { animation-delay: calc(var(--delay) * 4); }
.loader .n { animation-delay: calc(var(--delay) * 5); }
.loader .g { animation-delay: calc(var(--delay) * 6); }

.letter {
    width: fit-content;
    height: 3rem;
}

.i {
    margin-inline: 5px;
}

@keyframes hideAndSeek {
    to { transform: translateY(0); }
}

/* =============================================
   3. NAVEGACIÓN
   ============================================= */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 1000;
    transition: var(--transition-fast);
}

nav.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-img {
    height: 60px;
    width: auto;
    transition: var(--transition-fast);
}

nav.scrolled .logo-img {
    height: 40px;
}

.logo:hover .logo-img {
    filter: brightness(1.2);
    transform: scale(1.05);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 3rem;
    align-items: center;
}

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
}

nav ul a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-fast);
}

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

nav ul a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-fast);
}

/* =============================================
   4. HERO SECTION
   ============================================= */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark);
    overflow: hidden;
}

.video-background {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.7;
}

.video-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
        transparent 50%,
        rgba(0,0,0,0.2) 70%,
        rgba(0,0,0,0.6) 85%,
        rgba(0,0,0,0.9) 95%,
        black 100%);
    pointer-events: none;
}

.bg-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 1.5s ease;
    object-fit: cover;
}

.bg-video.active {
    opacity: 1;
}

.hero-center {
    text-align: center;
    z-index: 10;
    animation: fadeInUp 1s ease forwards;
}

.hero-logo {
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-tagline {
    font-size: 1.1rem;
    font-weight: 400;
    opacity: 0.6;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Bottom Marquee */
.bottom-marquee {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2.5rem 0;
    overflow: hidden;
    z-index: 10;
}

.bottom-marquee::before {
    content: '';
    position: absolute;
    inset: 0 0 -100px 0;
    background: linear-gradient(to top, 
        rgba(0,0,0,0.95) 0%, 
        rgba(0,0,0,0.8) 30%,
        rgba(0,0,0,0.5) 60%,
        transparent 100%);
    backdrop-filter: blur(20px);
    pointer-events: none;
    z-index: -1;
}

.bottom-marquee::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right,
        rgba(0,0,0,0.8) 0%,
        transparent 10%,
        transparent 90%,
        rgba(0,0,0,0.8) 100%);
    pointer-events: none;
    z-index: 1;
}

.marquee-track {
    display: flex;
    user-select: none;
    touch-action: pan-y;
    will-change: transform;
    cursor: grab;
    gap: 0;
}

.marquee-track[style*="cursor: grabbing"] {
    cursor: grabbing !important;
}

.marquee-content {
    display: flex;
    align-items: center;
    white-space: nowrap;
    padding-right: 50px;
    flex-shrink: 0;
}

.marquee-item {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition-fast);
    padding: 0 var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transform-origin: center;
    flex-shrink: 0;
}

.marquee-item:hover {
    color: var(--primary);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.marquee-separator {
    color: var(--gray);
    opacity: 0.3;
    font-size: 1.5rem;
    margin: 0 var(--spacing-sm);
}

/* =============================================
   5. SECCIONES PRINCIPALES
   ============================================= */
.music-section,
.tour-section,
.contact-section {
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
}

.music-section {
    background: var(--dark);
}

.tour-section {
    background: linear-gradient(180deg, transparent 0%, rgba(0, 128, 255, 0.02) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    font-weight: 400;
}

/* =============================================
   6. VIDEO CAROUSEL
   ============================================= */
.video-carousel {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
}

.carousel-wrapper {
    position: relative;
    padding: 0 80px;
}

.carousel-container {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
    padding: var(--spacing-md) 0 3rem;
    scroll-snap-type: x mandatory;
    cursor: grab;
    user-select: none;
    overscroll-behavior-x: contain;
}

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

.carousel-container.dragging {
    cursor: grabbing !important;
    scroll-behavior: auto;
}

/* Video Cards con animaciones integradas */
.video-card {
    min-width: 380px;
    background: linear-gradient(180deg, var(--dark-card) 0%, var(--dark-hover) 100%);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-bounce);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    scroll-snap-align: center;
}

.video-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 150%;
    height: 100%;
    background: radial-gradient(ellipse at center top, var(--glow) 0%, transparent 50%);
    transform: translateX(-50%) translateY(-100%);
    transition: transform var(--transition-smooth);
    pointer-events: none;
    z-index: 2;
}

.video-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 70%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, transparent 100%);
    pointer-events: none;
    z-index: 1;
}

.video-card:hover {
    transform: translateY(-10px) scale(1.05);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-card);
    animation: float 3s ease-in-out infinite;
}

.video-card:hover::before {
    transform: translateX(-50%) translateY(-40%);
}

@keyframes float {
    0%, 100% { transform: translateY(-10px) scale(1.05); }
    50% { transform: translateY(-20px) scale(1.05); }
}

.video-card.active {
    transform: scale(1.02);
    z-index: 10;
}

.video-card.prev,
.video-card.next {
    transform: scale(0.95);
    opacity: 0.7;
}

.video-card.prev { transform: scale(0.95) translateX(20px); }
.video-card.next { transform: scale(0.95) translateX(-20px); }

.video-card:first-child { margin-left: var(--spacing-lg); }
.video-card:last-child { margin-right: var(--spacing-lg); }

/* Video Content */
.video-thumbnail {
    width: 100%;
    height: 220px;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.video-thumbnail::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.7) 100%);
    pointer-events: none;
    z-index: 1;
}

.video-thumbnail iframe {
    width: 100%;
    height: 100%;
    border: none;
    transition: transform var(--transition-fast);
}

.video-card:hover .video-thumbnail iframe {
    transform: scale(1.05);
}

.video-info {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.video-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.video-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: var(--spacing-sm);
}

.video-links {
    display: flex;
    gap: 0.75rem;
    margin-top: var(--spacing-sm);
}

.video-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--white);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    touch-action: manipulation;
}

.video-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.video-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: currentColor;
}

.video-link:hover::before {
    width: 300px;
    height: 300px;
}

.video-link.youtube:hover {
    color: #FF0000;
    background: rgba(255, 0, 0, 0.1);
}

.video-link.spotify:hover {
    color: #1DB954;
    background: rgba(29, 185, 84, 0.1);
}

.video-link svg {
    width: 18px;
    height: 18px;
}

/* Carousel Controls */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 100;
    opacity: 0;
}

.video-carousel:hover .carousel-arrow {
    opacity: 1;
}

.carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-50%) scale(1.1);
}

.carousel-arrow.prev { left: 20px; }
.carousel-arrow.next { right: 20px; }

.carousel-arrow svg {
    width: 24px;
    height: 24px;
    fill: var(--white);
}

.carousel-arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.carousel-arrow:disabled:hover {
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.05);
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: var(--spacing-md);
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: var(--transition-fast);
}

.indicator.active {
    width: 32px;
    border-radius: 4px;
    background: var(--primary);
}

/* =============================================
   7. TOUR SECTION
   ============================================= */
.tour-container {
    max-width: 900px;
    margin: 0 auto;
}

.concerts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.concert-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.concert-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform var(--transition-fast);
}

.concert-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(8px);
}

.concert-item:hover::before {
    transform: scaleY(1);
}

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

.concert-date .day {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
}

.concert-date .month {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--gray);
    margin-top: 0.25rem;
}

.concert-date .year {
    display: block;
    font-size: 0.75rem;
    color: var(--gray);
    opacity: 0.6;
    margin-top: 0.25rem;
}

.concert-info {
    flex: 1;
}

.concert-venue {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.concert-location {
    color: var(--gray);
    font-size: 0.95rem;
}

.concert-status {
    text-align: right;
}

.ticket-link {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.ticket-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ticket-link:hover::before {
    width: 300px;
    height: 300px;
}

.ticket-link.available {
    background: var(--gradient);
    color: var(--dark);
    border: 2px solid transparent;
}

.ticket-link.available:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-primary);
}

.ticket-link.sold-out {
    background: transparent;
    color: var(--gray);
    border: 2px solid var(--border);
    cursor: not-allowed;
    opacity: 0.6;
}

.ticket-link.soon {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.ticket-link.soon:hover {
    background: rgba(0, 212, 255, 0.1);
}

.no-concerts {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.no-concerts p {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: var(--spacing-xs);
}

/* =============================================
   8. CONTACT & FOOTER
   ============================================= */
.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: 3rem;
}

.social-link {
    width: 56px;
    height: 56px;
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition-fast);
    background: rgba(255, 255, 255, 0.02);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    transition: left var(--transition-fast);
}

.social-link:hover {
    background: var(--primary);
    color: var(--dark);
    transform: translateY(-5px) rotate(10deg);
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
}

.social-link:hover::before {
    left: 0;
}

.social-link svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    position: relative;
    z-index: 1;
}

footer {
    padding: 3rem var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--gray);
    font-size: 0.875rem;
}

/* =============================================
   9. ANIMACIONES GLOBALES
   ============================================= */

/* Glitch Effect */
.glitch {
    position: relative;
    color: var(--white);
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    animation: glitch1 0.3s infinite;
    color: var(--primary);
    z-index: -1;
}

.glitch::after {
    animation: glitch2 0.3s infinite;
    color: var(--secondary);
    z-index: -2;
}

@keyframes glitch1 {
    0%, 100% { clip-path: inset(0 0 0 0); }
    25% { clip-path: inset(0 100% 0 0); transform: translate(-2px); }
    50% { clip-path: inset(0 0 0 100%); transform: translate(2px); }
    75% { clip-path: inset(100% 0 0 0); transform: translate(-2px); }
}

@keyframes glitch2 {
    0%, 100% { clip-path: inset(0 0 0 0); }
    25% { clip-path: inset(100% 0 0 0); transform: translate(2px); }
    50% { clip-path: inset(0 0 100% 0); transform: translate(-2px); }
    75% { clip-path: inset(0 100% 0 0); transform: translate(2px); }
}

/* Animaciones de entrada */
.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-smooth);
}

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

/* Text reveal */
.text-reveal {
    position: relative;
    overflow: hidden;
}

.text-reveal::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark);
    transform: translateX(-100%);
    animation: reveal 1s ease forwards;
}

@keyframes reveal {
    to { transform: translateX(100%); }
}

/* =============================================
   10. RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 6rem;
    }
    
    .carousel-wrapper {
        padding: 0 60px;
    }
    
    .video-card {
        min-width: 320px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 4rem;
    }
    
    /* Loader responsive */
    .loader span {
        letter-spacing: -3rem;
    }
    
    .letter {
        height: 2rem;
    }
    
    @keyframes hideAndSeek {
        0% { transform: translateY(3rem); }
        100% { transform: translateY(0rem); }
    }
    
    /* Navegación móvil */
    nav {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    nav.scrolled {
        padding: 0.75rem var(--spacing-lg);
    }
    
    .logo-img {
        height: 45px;
    }
    
    nav.scrolled .logo-img {
        height: 35px;
    }
    
    /* Menú móvil */
    nav ul {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(0, 0, 0, 0.85);
        backdrop-filter: blur(20px);
        padding: 0;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: var(--transition-fast);
        border-bottom: 1px solid transparent;
    }
    
    nav ul.active {
        max-height: 300px;
        opacity: 1;
        padding: var(--spacing-sm) 0;
        border-bottom-color: var(--border);
    }
    
    nav ul li {
        width: 100%;
        text-align: center;
        opacity: 0;
        transform: translateY(-10px);
        transition: var(--transition-fast);
    }
    
    nav ul.active li {
        opacity: 1;
        transform: translateY(0);
    }
    
    nav ul.active li:nth-child(1) { transition-delay: 0.05s; }
    nav ul.active li:nth-child(2) { transition-delay: 0.1s; }
    nav ul.active li:nth-child(3) { transition-delay: 0.15s; }
    
    nav ul a {
        display: block;
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }
    
    nav ul a::after {
        display: none;
    }
    
    /* Botón hamburguesa */
    .menu-toggle {
        display: flex;
        width: 32px;
        height: 32px;
        padding: 4px;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 1001;
    }
    
    .menu-toggle span {
        position: absolute;
        width: 20px;
        height: 2px;
        background: var(--white);
        transition: var(--transition-fast);
        transform-origin: center;
    }
    
    .menu-toggle span:nth-child(1) { transform: translateY(-6px); }
    .menu-toggle span:nth-child(3) { transform: translateY(6px); }
    
    .menu-toggle.active span:nth-child(1) { transform: rotate(45deg); }
    .menu-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
    .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg); }
    
    /* Hero responsive */
    .hero-logo {
        font-size: 3.5rem;
    }
    
    .marquee-item {
        font-size: 1.5rem;
        padding: var(--spacing-xs) 1.5rem;
    }
    
    .bottom-marquee {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    /* Carousel móvil */
    .carousel-wrapper {
        padding: 0 40px;
    }
    
    .carousel-arrow {
        width: 40px;
        height: 40px;
        opacity: 1;
    }
    
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    
    .video-card {
        min-width: 280px;
    }
    
    .video-card:first-child { margin-left: var(--spacing-lg); }
    .video-card:last-child { margin-right: var(--spacing-lg); }
    
    /* Conciertos móvil */
    .concert-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .concert-date {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-xs);
    }
    
    .concert-date .day {
        font-size: 1.5rem;
    }
    
    .concert-date .month,
    .concert-date .year {
        display: inline-block;
        margin: 0;
    }
    
    .concert-status {
        text-align: center;
        margin-top: var(--spacing-sm);
    }
    
    /* Social links móvil */
    .social-links {
        gap: var(--spacing-sm);
    }
    
    .social-link {
        width: 48px;
        height: 48px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
    }
    
    /* Loader pequeño */
    .loader span {
        letter-spacing: -2rem;
    }
    
    .letter {
        height: 1.5rem;
    }
    
    .i {
        margin-inline: 3px;
    }
    
    /* Nav pequeña */
    nav {
        padding: 0.75rem 1.5rem;
    }
    
    .logo-img {
        height: 40px;
    }
    
    nav.scrolled .logo-img {
        height: 30px;
    }
    
    /* Hero pequeño */
    .hero-logo {
        font-size: 2.5rem;
    }
    
    .marquee-item {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Carousel pequeño */
    .carousel-wrapper {
        padding: 0;
    }
    
    .carousel-arrow {
        display: none;
    }
    
    .video-card {
        min-width: calc(100vw - 4rem);
    }
}

/* Touch optimizations */
@media (hover: none) and (pointer: coarse) {
    .video-link:active {
        border-color: var(--primary);
        color: var(--primary);
    }
    
    .video-link.youtube:active {
        background: rgba(255, 0, 0, 0.2);
    }
    
    .video-link.spotify:active {
        background: rgba(29, 185, 84, 0.2);
    }
    
    /* Desactivar animaciones hover en móvil */
    .video-card:hover {
        animation: none;
    }
}

/* Reducir animaciones para rendimiento */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* =============================================
   11. UTILIDADES
   ============================================= */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Ripple effect (agregado por JS) */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Performance optimizations */
.carousel-container,
.marquee-track {
    will-change: transform;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.marquee-track,
.marquee-item {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Prevenir zoom en iOS */
@media (max-width: 768px) {
    input, select, textarea, button {
        font-size: 16px !important;
    }
}

/* Focus visible para accesibilidad */
.carousel-arrow:focus-visible,
.indicator:focus-visible,
.marquee-item:focus-visible,
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Firefox fixes */
@-moz-document url-prefix() {
    .carousel-container {
        scrollbar-width: none;
    }
}