==========================================*
 * ETHNOS Immersive Editorial Animation System
 * Cinematic but restrained - Premium continental media experience
 * Version: 3.0 - Immersive Edition
 */

/* ============================================
   1. GLOBAL MOTION SYSTEM & RESET
   ============================================ */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

/* GPU acceleration for animated elements */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* ============================================
   2. PAGE LOAD EXPERIENCE (CINEMATIC ENTRANCE)
   ============================================ */

body {
    opacity: 0;
    animation: bodyEnter 0.8s cubic-bezier(0.2, 0.6, 0.2, 1) forwards;
    animation-delay: 0.1s;
}

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

/* ============================================
   3. STAGGERED REVEAL SYSTEM (Section Rhythm)
   ============================================ */

.reveal-item {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.2, 0.6, 0.2, 1);
}

.reveal-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays for children */
.reveal-item[data-delay="1"] { transition-delay: 80ms; }
.reveal-item[data-delay="2"] { transition-delay: 160ms; }
.reveal-item[data-delay="3"] { transition-delay: 240ms; }
.reveal-item[data-delay="4"] { transition-delay: 320ms; }
.reveal-item[data-delay="5"] { transition-delay: 400ms; }
.reveal-item[data-delay="6"] { transition-delay: 480ms; }

/* ============================================
   4. HERO IMMERSIVE ENTRY (Cinematic Sequence)
   ============================================ */

.hero-image-immersive {
    opacity: 0;
    transform: scale(1.05);
    transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: 0ms;
}

.hero-image-immersive.visible {
    opacity: 1;
    transform: scale(1);
}

.hero-title-immersive {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.9s cubic-bezier(0.2, 0.6, 0.2, 1);
    transition-delay: 200ms;
}

.hero-title-immersive.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-subtitle-immersive {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.2, 0.6, 0.2, 1);
    transition-delay: 400ms;
}

.hero-subtitle-immersive.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-buttons-immersive {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.7s cubic-bezier(0.2, 0.6, 0.2, 1);
    transition-delay: 600ms;
}

.hero-buttons-immersive.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   5. INTELLIGENT SCROLL EXPERIENCE
   ============================================ */

/* Section line expansion */
.section-line {
    width: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, #A24B2A, transparent);
    transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    margin: 60px auto;
}

.section-line.visible {
    width: 100%;
}

/* Clip-path title reveal */
.title-clip-reveal {
    clip-path: inset(0 100% 0 0);
    transition: clip-path 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.title-clip-reveal.visible {
    clip-path: inset(0 0 0 0);
}

/* Subtle vertical parallax for images */
.parallax-image {
    will-change: transform;
    transition: transform 0.1s linear;
    transform: translateY(calc(var(--scroll-progress, 0) * 20px));
}

/* ============================================
   6. ARTICLE READING IMMERSION
   ============================================ */

/* Reading progress bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(to right, #A24B2A, #B38A3D);
    width: 0%;
    z-index: 10000;
    transition: width 0.1s linear;
    box-shadow: 0 0 10px rgba(162, 75, 42, 0.3);
}

/* Section highlight on scroll */
.section-highlight {
    opacity: 0.7;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.section-highlight.active {
    opacity: 1;
    transform: translateX(10px);
}

/* Pull quote cinematic fade */
.pull-quote-immersive {
    opacity: 0;
    transform: translateX(-30px) scale(0.98);
    transition: all 0.9s cubic-bezier(0.16, 1, 0.3, 1);
    border-left: 3px solid #A24B2A;
    padding-left: 24px;
    margin: 40px 0;
}

.pull-quote-immersive.visible {
    opacity: 1;
    transform: translateX(0) scale(1);
}

/* Animated link underline */
.link-animated {
    position: relative;
    text-decoration: none;
    color: #A24B2A;
}

.link-animated::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: #A24B2A;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.link-animated:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ============================================
   7. CARD INTERACTION UPGRADE (Layered Depth)
   ============================================ */

.card-immersive {
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-style: preserve-3d;
}

.card-immersive:hover {
    transform: translateY(-8px);
}

.card-immersive .card-image {
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-immersive:hover .card-image {
    transform: scale(1.03);
}

.card-immersive .card-title {
    transition: transform 0.3s ease;
}

.card-immersive:hover .card-title {
    transform: translateY(-3px);
}

.card-immersive .card-underline {
    width: 0;
    height: 1px;
    background: #A24B2A;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-immersive:hover .card-underline {
    width: 100%;
}

/* ============================================
   8. IMMERSIVE MENU INTERACTION
   ============================================ */

.nav-immersive {
    position: relative;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-immersive::before {
    content: '';
    position: absolute;
    inset: -8px -16px;
    background: rgba(162, 75, 42, 0.05);
    border-radius: 4px;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.3s ease;
    z-index: -1;
}

.nav-immersive:hover::before {
    opacity: 1;
    transform: scale(1);
}

.nav-immersive::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 1px;
    background: #A24B2A;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform: translateX(-50%);
}

.nav-immersive:hover::after,
.nav-immersive.active::after {
    width: 100%;
}

/* Mobile slide-in panel - Enhanced */
.mobile-panel {
    transform: translateX(100%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-panel.open {
    transform: translateX(0);
    opacity: 1;
}

/* Improved mobile menu backdrop */
.mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 49;
}

.mobile-menu-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   9. PAGE TRANSITION SYSTEM
   ============================================ */

.page-fade-out {
    animation: pageFadeOut 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.page-fade-in {
    animation: pageFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pageFadeOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-10px); }
}

@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   10. MICROINTERACTIONS SYSTEM
   ============================================ */

/* Button micro-compression */
.btn-micro {
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.btn-micro:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(162, 75, 42, 0.2);
}

.btn-micro:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 10px rgba(162, 75, 42, 0.1);
}

/* Input border animation */
.input-animated {
    position: relative;
    border: 1px solid rgba(0,0,0,0.15);
    transition: border-color 0.3s ease;
}

.input-animated::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #A24B2A;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform: translateX(-50%);
}

.input-animated:focus-within::after {
    width: 100%;
}

.input-animated:focus-within {
    border-color: #A24B2A;
}

/* Social icon rotation */
.social-icon {
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.social-icon:hover {
    transform: rotate(5deg) scale(1.1);
    color: #A24B2A;
}

/* Footer link underline */
.footer-link {
    position: relative;
    display: inline-block;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.3s ease;
}

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

/* ============================================
   11. IMMERSIVE EDITION MODE
   ============================================ */

.reading-mode {
    background: #FAF8F5;
    transition: background 0.6s ease;
}

.reading-mode .article-text {
    font-size: 1.05em;
    line-height: 1.9;
    transition: all 0.4s ease;
}

.reading-mode .article-container {
    max-width: 680px;
    transition: max-width 0.4s ease;
}

/* Mode toggle button */
.mode-toggle {
    position: fixed;
    bottom: 100px;
    right: 40px;
    width: 48px;
    height: 48px;
    background: #1B1B1B;
    color: #F5F1EA;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 999;
}

.mode-toggle.visible {
    opacity: 1;
    visibility: visible;
}

.mode-toggle:hover {
    transform: scale(1.1);
    background: #A24B2A;
}

/* ============================================
   12. CURSOR INTELLIGENCE (Desktop Only)
   ============================================ */

@media (pointer: fine) {
    .custom-cursor {
        width: 8px;
        height: 8px;
        background: #A24B2A;
        border-radius: 50%;
        position: fixed;
        pointer-events: none;
        z-index: 10000;
        transition: width 0.3s ease, height 0.3s ease, background 0.3s ease, border 0.3s ease;
        transform: translate(-50%, -50%);
        mix-blend-mode: difference;
    }
    
    .custom-cursor.link-hover {
        width: 40px;
        height: 40px;
        background: transparent;
        border: 1px solid #A24B2A;
        mix-blend-mode: normal;
    }
    
    .custom-cursor.image-hover {
        width: 60px;
        height: 60px;
        background: rgba(162, 75, 42, 0.1);
        mix-blend-mode: normal;
    }
    
    /* Hide default cursor on interactive elements */
    a, button, .card-immersive, .cursor-pointer {
        cursor: none;
    }
}

/* ============================================
   13. SCROLL TO TOP (Enhanced)
   ============================================ */

.scroll-top-enhanced {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 44px;
    height: 44px;
    background: #1B1B1B;
    color: #F5F1EA;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
}

.scroll-top-enhanced.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.scroll-top-enhanced:hover {
    background: #A24B2A;
    transform: translateY(-2px);
}

/* ============================================
   14. REDUCED MOTION RESPECT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    body {
        opacity: 1 !important;
        animation: none !important;
    }
    
    .reveal-item,
    .hero-image-immersive,
    .hero-title-immersive,
    .hero-subtitle-immersive,
    .hero-buttons-immersive,
    .title-clip-reveal,
    .pull-quote-immersive {
        opacity: 1 !important;
        transform: none !important;
        clip-path: none !important;
    }
    
    .parallax-image {
        transform: none !important;
    }
}

/* ============================================
   15. PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* Content visibility for off-screen sections */
.content-visibility {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

/* Contain paint for animated sections */
.contain-paint {
    contain: paint;
}

/* Prevent layout shifts */
.aspect-stable {
    aspect-ratio: attr(data-ratio);
}

/* Touch target optimization */
.touch-target {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   16. TYPOGRAPHY REFINEMENTS
   ============================================ */

/* Letter spacing on load */
.letter-space-reveal {
    letter-spacing: -0.5px;
    transition: letter-spacing 1.4s cubic-bezier(0.2, 0.6, 0.2, 1);
}

.letter-space-reveal.visible {
    letter-spacing: 0.3px;
}

/* Word highlight animation */
.word-highlight {
    background: linear-gradient(to right, transparent 50%, rgba(162, 75, 42, 0.1) 50%);
    background-size: 200% 100%;
    background-position: 100% 0;
    transition: background-position 0.6s ease;
}

.word-highlight:hover {
    background-position: 0 0;
}

/* ============================================
   17. FILTER INTERACTIONS (Columnas/Articulos)
   ============================================ */

.filter-btn-animated {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.filter-btn-animated::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #A24B2A;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.filter-btn-animated:hover::before,
.filter-btn-animated.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* Active state animation */
.filter-btn-animated.active {
    color: #A24B2A;
    font-weight: 500;
}

/* ============================================
   18. EDITION COVER INTERACTION
   ============================================ */

.edition-cover-wrap {
    overflow: hidden;
    position: relative;
}

.edition-cover-wrap::after {
    content: 'Ver edición';
    position: absolute;
    inset: 0;
    background: rgba(162, 75, 42, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.edition-cover-wrap:hover::after {
    opacity: 1;
}

.edition-cover-img {
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.edition-cover-wrap:hover .edition-cover-img {
    transform: scale(1.05);
}