/**
 * Enhanced Scrollytelling Styles
 * Animations sophistiquées et orchestrées
 */

/* ============================================
   PROGRESS BAR - Élégante et Fluide
   ============================================ */

.scrolly-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background:
        linear-gradient(180deg,
            rgba(255, 255, 255, 0.98) 0%,
            rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.04),
        0 8px 24px rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.scrolly-progress-bar {
    height: 3px;
    background: linear-gradient(90deg,
            rgba(0, 0, 0, 0.04) 0%,
            rgba(0, 0, 0, 0.06) 100%);
    position: relative;
    overflow: hidden;
}

.scrolly-progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.3),
            transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.scrolly-progress-fill {
    height: 100%;
    width: 0%;
    transition: width 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 0 10px currentColor;
}

.scrolly-progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 20px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
}

.scrolly-chapters-nav {
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.scrolly-chapters-nav button {
    background: none;
    border: none;
    padding: 8px 16px;
    font-size: 0.85em;
    font-weight: 500;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    position: relative;
}

.scrolly-chapters-nav button:hover {
    color: var(--color-primary);
    background: rgba(32, 135, 145, 0.05);
}

.scrolly-chapters-nav button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: 600;
}

.scrolly-chapters-nav button::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.scrolly-chapters-nav button.active::before {
    transform: scaleX(1);
}

/* Ajuster la position du contenu pour compenser le sticky header */
.container {
    padding-top: 80px;
}

/* ============================================
   ORCHESTRATED REVEAL ANIMATIONS (Optimized)
   ============================================ */

.js-enabled [data-scroll-fade] {
    opacity: 0;
    transform: translateY(30px);
    /* Removed scale for performance */
    transition:
        opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-enabled [data-scroll-fade].fade-in-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Sections with atmospheric entrance */
.js-enabled .content-section {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
        transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-enabled .content-section.scrolly-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Cards with staggered reveal */
.js-enabled .card {
    opacity: 0;
    transform: translateY(30px) translateX(-10px);
    transition:
        opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-enabled .card.scrolly-visible {
    opacity: 1;
    transform: translateY(0) translateX(0);
}

/* Stagger delays */
.js-enabled .card:nth-child(1) {
    transition-delay: 0.05s;
}

.js-enabled .card:nth-child(2) {
    transition-delay: 0.1s;
}

.js-enabled .card:nth-child(3) {
    transition-delay: 0.15s;
}

.js-enabled .card:nth-child(4) {
    transition-delay: 0.2s;
}

.js-enabled .card:nth-child(5) {
    transition-delay: 0.25s;
}

.js-enabled .card:nth-child(6) {
    transition-delay: 0.3s;
}

/* ============================================
   STATISTICS - Optimized Entrance
   ============================================ */

.js-enabled .stat-box {
    opacity: 0;
    transform: scale(0.85) translateY(30px);
    /* Removed rotateX 3D for performance */
    transition: all 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.js-enabled .stat-box.stat-reveal {
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* Stats stagger with increasing delay */
.js-enabled .stat-box:nth-child(1) {
    transition-delay: 0.1s;
}

.js-enabled .stat-box:nth-child(2) {
    transition-delay: 0.2s;
}

.js-enabled .stat-box:nth-child(3) {
    transition-delay: 0.3s;
}

.js-enabled .stat-box:nth-child(4) {
    transition-delay: 0.4s;
}

/* Animated counters */
[data-counter] {
    display: inline-block;
    font-variant-numeric: tabular-nums;
}

.stat-box .number {
    position: relative;
}

.stat-box .number::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.3);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s ease 0.3s;
}

.stat-box.stat-reveal .number::after {
    transform: scaleX(1);
}

/* ============================================
   DELTA SECTION ANIMATIONS
   ============================================ */

.js-enabled .delta-section {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease;
}

.js-enabled .delta-section.delta-reveal,
.js-enabled .delta-section.scrolly-visible {
    opacity: 1;
    transform: translateX(0);
}

.js-enabled .delta-section:nth-child(even) {
    transform: translateX(20px);
}

/* ============================================
   STICKY ELEMENTS
   ============================================ */

[data-scroll-sticky] {
    transition: all 0.3s ease;
}

[data-scroll-sticky].is-sticky {
    position: sticky;
    top: 120px;
    z-index: 10;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transform: scale(1.02);
}

/* ============================================
   PARALLAX EFFECTS (Disabled for performance)
   ============================================ */

.parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    opacity: 0.1;
    /* will-change removed: excessive GPU memory usage */
}

/* ============================================
   HOVER EFFECTS ENHANCED
   ============================================ */

.card {
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(32, 135, 145, 0.05),
            transparent);
    transition: left 0.5s ease;
}

.card:hover::before {
    left: 100%;
}

/* ============================================
   COMPARISON BOXES ANIMATIONS
   ============================================ */

.comparison-box {
    transform: perspective(1000px) rotateY(0deg);
    transition: all 0.4s ease;
}

.comparison-box:hover {
    transform: perspective(1000px) rotateY(2deg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.comparison-box.definition:hover {
    transform: perspective(1000px) rotateY(-2deg);
}

/* ============================================
   TIMELINE ANIMATIONS
   ============================================ */

.js-enabled .timeline-item {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease;
}

.js-enabled .timeline-item.scrolly-visible {
    opacity: 1;
    transform: translateX(0);
}

.js-enabled .timeline-item::before {
    transform: scale(0);
    transition: transform 0.3s ease 0.2s;
}

.js-enabled .timeline-item.scrolly-visible::before {
    transform: scale(1);
}

/* ============================================
   QUIZ REVEAL ANIMATION
   ============================================ */

.js-enabled #quiz-container {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.5s ease;
}

.js-enabled #quiz-container.quiz-reveal {
    opacity: 1;
    transform: scale(1);
}

/* ============================================
   SOLUTIONS SECTION
   ============================================ */

/* ============================================
   SOLUTIONS SECTION
   ============================================ */

.js-enabled .solution-box li {
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.4s ease;
}

.js-enabled .solution-box.scrolly-visible li {
    opacity: 1;
    transform: translateX(0);
}

.solution-box.scrolly-visible li:nth-child(1) {
    transition-delay: 0.1s;
}

.solution-box.scrolly-visible li:nth-child(2) {
    transition-delay: 0.2s;
}

.solution-box.scrolly-visible li:nth-child(3) {
    transition-delay: 0.3s;
}

.solution-box.scrolly-visible li:nth-child(4) {
    transition-delay: 0.4s;
}

.solution-box.scrolly-visible li:nth-child(5) {
    transition-delay: 0.5s;
}

/* ============================================
   MOBILE OPTIMIZATIONS
   ============================================ */

@media (max-width: 768px) {
    .scrolly-chapters-nav {
        padding: 6px 0;
    }

    .scrolly-chapters-nav button {
        padding: 6px 12px;
        font-size: 0.75em;
    }

    .container {
        padding-top: 70px;
    }

    [data-scroll-sticky].is-sticky {
        position: relative;
        top: auto;
        transform: none;
    }

    /* Réduire les animations sur mobile pour performance */
    [data-scroll-fade],
    .content-section,
    .card {
        transition-duration: 0.3s;
    }
}

/* ============================================
   REDUCED MOTION & PERFORMANCE
   ============================================ */

@media (prefers-reduced-motion: reduce) {

    [data-scroll-fade],
    .content-section,
    .card,
    .stat-box,
    .delta-section,
    .timeline-item,
    #quiz-container,
    .solution-box li {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* Mobile performance optimizations */
@media (max-width: 768px) {

    /* Disable expensive effects on mobile */
    .card::before,
    .stat-box::before,
    .stat-box .number::after {
        display: none;
    }

    /* Simplify hover effects */
    .card:hover,
    .stat-box:hover {
        transform: none;
    }

    /* Reduce animation complexity */
    .js-enabled .stat-box {
        transform: translateY(20px);
    }

    .js-enabled .stat-box.stat-reveal {
        transform: translateY(0);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {

    .scrolly-progress-container,
    .scrolly-chapters-nav {
        display: none;
    }

    .container {
        padding-top: 0;
    }
}