/* 
   METAL IA - STYLE SYSTEM (PREMIUM INDUSTRIEL SUISSE)
   Inspirations: Apple Event, Porsche, Autodesk, Swiss Architecture
   Blanc / Acier / Noir profond / Bleu technique subtil
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-dark: #070709;
    --bg-deep: #020204; /* Noir d'encre absolu */
    --bg-surface: #07070a; /* Surface gris-noir intermédiaire */
    --bg-card: rgba(15, 15, 22, 0.65); /* Niveau de card flottante anthracite */
    --bg-card-hover: rgba(22, 22, 32, 0.8); /* Survol de carte légèrement éclairci */
    --bg-interactive: rgba(255, 255, 255, 0.02);
    
    --text-white: #ffffff;
    --text-silver: #f4f4f5;
    --text-gray: #a1a1aa;
    --text-muted: #71717a;
    
    /* Acier / Verre */
    --steel-border: rgba(255, 255, 255, 0.09); /* Ligne translucide nette */
    --steel-border-hover: rgba(255, 255, 255, 0.2);
    --steel-glow: rgba(255, 255, 255, 0.02);
    
    /* Bleu Technique (Lueur de précision alpine) */
    --accent-blue: #0070f3;
    --accent-blue-rgb: 0, 112, 243;
    --accent-blue-light: #38bdf8;
    --accent-glow: rgba(0, 112, 243, 0.15);
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-deep);
    color: var(--text-white);
    font-family: var(--font-family);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
    background: var(--bg-deep);
}

/* Typography Selection */
::selection {
    background: rgba(var(--accent-blue-rgb), 0.3);
    color: var(--text-white);
}

/* Structure & Layout Utilities */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 4rem;
}

@media (max-width: 768px) {
    .section-container {
        padding: 0 1.5rem;
    }
}

.text-gradient {
    background: linear-gradient(180deg, #ffffff 30%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ──────────────────────────────────────────────────────────
   1. NAVIGATION PREMIUM
   ────────────────────────────────────────────────────────── */
.premium-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(2, 2, 3, 0.3);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--steel-border);
    transition: var(--transition-smooth);
}

.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media (max-width: 768px) {
    .nav-inner {
        padding: 1rem 1.5rem;
    }
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-white);
}

.nav-brand-title {
    font-weight: 700;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
    color: var(--text-white);
    text-transform: uppercase;
}

.nav-brand-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

@media (max-width: 992px) {
    .nav-links {
        display: none; /* Simplification mobile */
    }
}

.nav-links a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-white);
}

.nav-cta {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--steel-border);
    padding: 0.6rem 1.2rem;
    border-radius: 100px;
    color: var(--text-white) !important;
    backdrop-filter: blur(10px);
    transition: var(--transition-fast) !important;
}

.nav-cta:hover {
    background: var(--text-white) !important;
    color: var(--bg-deep) !important;
    border-color: var(--text-white);
}

/* ──────────────────────────────────────────────────────────
   2. HERO SECTION FULLSCREEN VIDÉO
   ────────────────────────────────────────────────────────── */
.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    pointer-events: none;
}

/* Fallback Image if Video fails or on low-power devices */
.hero-poster-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('metal_ia_hero_bg.png');
    background-size: cover;
    background-position: center;
    z-index: 0;
}

/* Cinema Lighting Overlays */
.hero-overlay-dark {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background: linear-gradient(
        to right,
        rgba(2, 2, 3, 0.95) 0%,
        rgba(2, 2, 3, 0.7) 45%,
        rgba(2, 2, 3, 0.3) 100%
    );
}

/* Mobile responsive overlay adjust & section height fix */
@media (max-width: 992px) {
    .hero-section {
        height: auto;
        min-height: 100dvh;
        overflow: visible;
        display: block;
        padding-top: 110px; /* Safe padding so fixed navbar never covers text */
        padding-bottom: 80px;
    }
    .hero-overlay-dark {
        background: linear-gradient(
            to bottom,
            rgba(2, 2, 3, 0.9) 0%,
            rgba(2, 2, 3, 0.8) 50%,
            rgba(2, 2, 3, 0.95) 100%
        );
    }
    .hero-scroll-down {
        display: none !important; /* Hide mouse scroll down on mobile */
    }
}

.hero-grid {
    position: relative;
    z-index: 10;
    width: 100%;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 4rem;
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
}

/* Left Content */
.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

@media (max-width: 992px) {
    .hero-content {
        align-items: center;
    }
}

.hero-presenter {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--text-gray);
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.hero-presenter::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--text-muted);
}

.hero-title {
    font-size: clamp(3.2rem, 6.5vw, 6.2rem);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin-bottom: 1rem;
}

.hero-title span {
    display: block;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    font-weight: 400;
    color: var(--text-silver);
    line-height: 1.3;
    margin-bottom: 1.8rem;
    max-width: 600px;
}

.hero-taglines {
    font-size: 0.95rem;
    color: var(--text-gray);
    font-weight: 500;
    letter-spacing: 0.05em;
    margin-bottom: 3rem;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

@media (max-width: 992px) {
    .hero-taglines {
        justify-content: center;
        margin-bottom: 2rem;
    }
}

.hero-taglines span {
    display: inline-flex;
    align-items: center;
}

.hero-taglines span:not(:last-child)::after {
    content: '·';
    margin-left: 0.75rem;
    color: var(--accent-blue);
    font-weight: bold;
}

/* Badges Premium */
.hero-badges-wrapper {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

@media (max-width: 992px) {
    .hero-badges-wrapper {
        justify-content: center;
        margin-bottom: 2.5rem;
    }
}

.premium-badge {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--steel-border);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-silver);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.premium-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-blue-light);
    box-shadow: 0 0 8px var(--accent-blue-light);
}

.premium-badge.location::before {
    display: none;
}

/* Button CTA Group */
.hero-ctas {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

@media (max-width: 576px) {
    .hero-ctas {
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }
}

.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.1rem 2.4rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 100px;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    overflow: hidden;
}

@media (max-width: 576px) {
    .btn {
        width: 100%;
    }
}

.btn-primary {
    background: var(--text-white);
    color: var(--bg-deep);
    border: 1px solid var(--text-white);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-white);
    border: 1px solid var(--steel-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--steel-border-hover);
    transform: translateY(-2px);
}

/* Right Content: Widgets UI Flottants */
.hero-visual-area {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (max-width: 992px) {
    .hero-visual-area {
        height: auto;
        margin-top: 3rem;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        width: 100%;
        align-items: stretch;
        justify-content: center;
    }

    .glass-widget {
        position: relative !important;
        top: auto !important;
        left: auto !important;
        right: auto !important;
        bottom: auto !important;
        width: 100% !important;
        margin: 0 !important;
        animation: none !important; /* Stop absolute keyframe animations */
        transform: none !important;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.45) !important;
    }
}

/* Floating Glass Widgets */
.glass-widget {
    position: absolute;
    background: rgba(16, 16, 22, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(25px) saturate(190%);
    -webkit-backdrop-filter: blur(25px) saturate(190%);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.5),
        0 1px 0 rgba(255, 255, 255, 0.12) inset;
    z-index: 5;
    pointer-events: auto;
    transition: var(--transition-smooth);
}

.glass-widget:hover {
    border-color: rgba(56, 189, 248, 0.35);
    background: rgba(22, 22, 30, 0.85);
    transform: scale(1.03) translateY(-5px);
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.65), 
        0 0 30px rgba(var(--accent-blue-rgb), 0.12),
        0 1px 0 rgba(255, 255, 255, 0.2) inset;
}

/* Widget Header */
.widget-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
    font-weight: 700;
}

.widget-status {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent-blue-light);
}

.widget-status::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-blue-light);
    box-shadow: 0 0 6px var(--accent-blue-light);
}

.widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.4rem;
}

.widget-desc {
    font-size: 0.8rem;
    color: var(--text-gray);
    line-height: 1.4;
}

/* Specific Positions and Float Keyframe Links */
.widget-facturation {
    top: 5%;
    left: 5%;
    width: 280px;
    animation: float-slow-1 10s ease-in-out infinite;
}

.widget-planning {
    top: 55%;
    right: 5%;
    width: 290px;
    animation: float-slow-2 12s ease-in-out infinite;
}

.widget-projection {
    top: 50%;
    left: -5%;
    width: 270px;
    animation: float-slow-3 11s ease-in-out infinite;
}

.widget-devis {
    top: 15%;
    right: -10%;
    width: 260px;
    animation: float-slow-4 9s ease-in-out infinite;
}

@media (max-width: 1200px) {
    .widget-devis { right: 0; }
    .widget-projection { left: 0; }
}


@media (max-width: 576px) {
    .hero-visual-area {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 2rem;
    }
    .glass-widget {
        display: block;
    }
}

/* Mini Gantt Technical inside widget */
.widget-gantt {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 0.6rem;
}

.gantt-bar {
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.gantt-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: var(--gantt-left, 0);
    width: var(--gantt-width, 30%);
    height: 100%;
    background: var(--accent-blue-light);
}

.widget-progress-circle {
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 2px solid var(--accent-blue-light);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

/* Premium Unified Checklist style for Hero glass-widgets */
.widget-checklist {
    margin-top: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 0.68rem;
}

.widget-checklist-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.72rem;
    color: var(--text-gray);
    line-height: 1.3;
}

.widget-checklist-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.25);
    color: var(--accent-blue-light);
    font-size: 0.55rem;
    font-weight: 800;
    flex-shrink: 0;
    box-shadow: 0 0 6px rgba(56, 189, 248, 0.2);
}

/* Animations for floating */
@keyframes float-slow-1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-16px) rotate(1deg); }
}
@keyframes float-slow-2 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(14px) rotate(-1deg); }
}
@keyframes float-slow-3 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-18px) rotate(-1.5deg); }
}
@keyframes float-slow-4 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(12px) rotate(1deg); }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Hero Scroll Down Indicator */
.hero-scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-gray);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-weight: 600;
    opacity: 0.8;
    transition: var(--transition-fast);
}

.hero-scroll-down:hover {
    opacity: 1;
    color: var(--text-white);
}

.scroll-mouse {
    width: 20px;
    height: 32px;
    border: 2px solid var(--text-muted);
    border-radius: 20px;
    position: relative;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--text-gray);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel-anim 1.8s ease-in-out infinite;
}

@keyframes scroll-wheel-anim {
    0% { top: 6px; opacity: 1; }
    50% { top: 16px; opacity: 0; }
    100% { top: 6px; opacity: 0; }
}

/* ──────────────────────────────────────────────────────────
   3. TRANSITION HERO (CINEMATIC CONTINUITY)
   ────────────────────────────────────────────────────────── */
.cinematic-transition-mask {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    z-index: 8;
    background: linear-gradient(to bottom, transparent, var(--bg-deep));
    pointer-events: none;
}

/* ──────────────────────────────────────────────────────────
   4. SECTION 2 - STORYTELLING ET VIDÉO IMMERSIVE
   ────────────────────────────────────────────────────────── */
.immersive-video-section {
    padding: 210px 0;
    position: relative;
    background: var(--bg-deep);
    z-index: 10;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
}

.split-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
    gap: 6rem;
}

@media (max-width: 992px) {
    .split-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
}

.story-content {
    display: flex;
    flex-direction: column;
}

.story-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--accent-blue-light);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.story-title {
    font-size: clamp(2.2rem, 4vw, 3.8rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
    color: var(--text-white);
}

.story-text {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    color: var(--text-gray);
    line-height: 1.6;
    font-weight: 400;
}

.story-quote {
    margin-top: 2.5rem;
    padding-left: 2rem;
    border-left: 2px solid var(--accent-blue);
    font-style: italic;
    color: var(--text-silver);
    font-size: 1.1rem;
    line-height: 1.5;
}

/* Immersive Video Player Container */
.player-container {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--steel-border);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6);
    aspect-ratio: 16 / 9;
    transition: var(--transition-smooth);
}

.player-container:hover {
    border-color: var(--steel-border-hover);
    box-shadow: 0 40px 90px rgba(var(--accent-blue-rgb), 0.08);
}

.player-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Custom Player Overlays */
.player-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(2, 2, 3, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
    transition: var(--transition-fast);
}

.player-container.is-playing .player-overlay {
    opacity: 0;
    pointer-events: none;
}

.play-btn-premium {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.play-btn-premium svg {
    width: 24px;
    height: 24px;
    fill: var(--text-white);
    transform: translateX(2px);
    transition: var(--transition-fast);
}

.play-btn-premium:hover {
    background: var(--text-white);
    transform: scale(1.1);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.4);
}

.play-btn-premium:hover svg {
    fill: var(--bg-deep);
}

/* Fullscreen control overlay */
.player-fullscreen-trigger {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 5;
    background: rgba(10, 10, 12, 0.6);
    border: 1px solid var(--steel-border);
    backdrop-filter: blur(10px);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-fast);
    opacity: 0;
}

.player-container:hover .player-fullscreen-trigger {
    opacity: 1;
}

.player-fullscreen-trigger:hover {
    background: var(--text-white);
    color: var(--bg-deep);
    border-color: var(--text-white);
}

/* ──────────────────────────────────────────────────────────
   5. SECTION 3 - CAS CONCRETS (INTERACTIVE GRIDS)
   ────────────────────────────────────────────────────────── */
.concrete-cases-section {
    padding: 210px 0;
    background: var(--bg-deep);
    position: relative;
    z-index: 10;
}

.section-head {
    margin-bottom: 5rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.section-head .story-label {
    margin-bottom: 1rem;
}

.section-title-line {
    display: flex;
    align-items: center;
    gap: 2rem;
    width: 100%;
}

@media (max-width: 768px) {
    .section-title-line {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

.sec-title {
    font-size: clamp(2.2rem, 3.5vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-white);
    white-space: normal;
}

.sec-divider-line {
    flex-grow: 1;
    height: 1px;
    background: linear-gradient(to right, var(--steel-border), transparent);
}

/* Tech Grid */
.concrete-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

@media (max-width: 992px) {
    .concrete-grid {
        grid-template-columns: 1fr;
    }
}

/* Hologram Panel */
.hologram-panel {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 2.8rem 2.5rem;
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    cursor: default;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.45),
        0 1px 0 rgba(255, 255, 255, 0.1) inset,
        0 0 1px rgba(255, 255, 255, 0.15) inset;
}

/* Panel mouse radial glow effect */
.hologram-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle 300px at var(--mouse-x, -1000px) var(--mouse-y, -1000px),
        rgba(255, 255, 255, 0.06) 0%,
        transparent 60%
    );
    pointer-events: none;
    z-index: 1;
}

.hologram-panel::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--accent-blue-light), transparent);
    opacity: 0.2;
    transition: var(--transition-smooth);
}

.hologram-panel:hover {
    background: var(--bg-card-hover);
    border-color: rgba(56, 189, 248, 0.35);
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.6), 
        0 0 40px rgba(0, 112, 243, 0.08),
        0 1px 0 rgba(255, 255, 255, 0.2) inset;
    transform: translateY(-6px);
}

.hologram-panel:hover::after {
    opacity: 0.95;
    background: linear-gradient(to right, transparent, var(--accent-blue-light), transparent);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.panel-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--steel-border);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--accent-blue-light);
    transition: var(--transition-fast);
}

.hologram-panel:hover .panel-icon-wrap {
    background: rgba(var(--accent-blue-rgb), 0.1);
    border-color: rgba(var(--accent-blue-rgb), 0.3);
    color: var(--text-white);
    transform: scale(1.05);
}

.panel-icon-wrap svg {
    width: 22px;
    height: 22px;
}

.panel-category-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-white);
}

/* Panel Use Cases List */
.usecase-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.usecase-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.02);
    transition: var(--transition-fast);
}

.hologram-panel:hover .usecase-item:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.06);
    transform: translateX(4px);
}

.usecase-indicator {
    margin-top: 0.3rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: var(--transition-fast);
}

.usecase-item:hover .usecase-indicator {
    background: var(--accent-blue-light);
    box-shadow: 0 0 8px var(--accent-blue-light);
}

.usecase-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-silver);
    margin-bottom: 0.2rem;
}

.usecase-content p {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.45;
}

/* ──────────────────────────────────────────────────────────
   5.5 SECTION MANIFESTE - CINÉMATIQUE
   ────────────────────────────────────────────────────────── */
.manifesto-section {
    padding: 230px 0;
    background: var(--bg-deep);
    text-align: center;
    position: relative;
    z-index: 10;
    overflow: hidden;
    border-top: 1px solid rgba(255, 255, 255, 0.01);
}

.manifesto-huge-text {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.05em;
    color: var(--text-white);
}

.manifesto-huge-text span {
    display: block;
}

.manifesto-huge-text .highlight-manifesto {
    color: var(--text-gray);
    background: linear-gradient(180deg, var(--text-white) 20%, var(--text-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.9;
}

@media (max-width: 992px) {
    .manifesto-huge-text {
        font-size: 3.8rem;
    }
}

@media (max-width: 576px) {
    .manifesto-huge-text {
        font-size: 2.6rem;
        letter-spacing: -0.03em;
    }
}

/* ──────────────────────────────────────────────────────────
   6. SECTION 4 - POUR QUI ? (MONUMENTAL BLOCS)
   ────────────────────────────────────────────────────────── */
.audiences-section {
    padding: 210px 0;
    background: var(--bg-deep);
    position: relative;
    z-index: 10;
}

.audience-blocks {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.audience-block-horizontal {
    position: relative;
    border-top: 1px solid var(--steel-border);
    padding: 4rem 3rem;
    display: grid;
    grid-template-columns: 0.5fr 1fr 1.5fr;
    align-items: center;
    gap: 3rem;
    overflow: hidden;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.01) 0%, transparent 100%);
    transition: var(--transition-smooth);
}

.audience-block-horizontal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: var(--accent-blue-light);
    box-shadow: 0 0 15px var(--accent-blue-light);
    transition: var(--transition-smooth);
}

.audience-block-horizontal:hover {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.005) 100%);
}

.audience-block-horizontal:hover::before {
    width: 100%;
}

@media (max-width: 992px) {
    .audience-block-horizontal {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 3rem 1.5rem;
    }
}

.audience-num {
    font-size: 4rem;
    font-weight: 800;
    font-family: var(--font-family);
    color: rgba(255, 255, 255, 0.03);
    letter-spacing: -0.05em;
    line-height: 1;
    transition: var(--transition-smooth);
}

.audience-block-horizontal:hover .audience-num {
    color: rgba(var(--accent-blue-rgb), 0.1);
    transform: scale(1.1);
}

.audience-segment-details h3 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.audience-punchline {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--accent-blue-light);
    letter-spacing: 0.02em;
}

.audience-desc-text {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ──────────────────────────────────────────────────────────
   7. SECTION 5 - EXPÉRIENCE LIVE (TIMELINE ACCÉLÉRÉE)
   ────────────────────────────────────────────────────────── */
.experience-live-section {
    padding: 210px 0;
    background: var(--bg-deep);
    position: relative;
    z-index: 10;
}

.timeline-outer {
    max-width: 900px;
    margin: 4rem auto 0;
    position: relative;
    padding: 2rem 0;
}

/* Timeline Vertical Line */
.timeline-track {
    position: absolute;
    left: 40px;
    top: 0;
    width: 2px;
    height: 100%;
    background: rgba(255, 255, 255, 0.05);
}

.timeline-progress-bar {
    position: absolute;
    left: 40px;
    top: 0;
    width: 2px;
    height: 0%; /* Driven by JS on Scroll */
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-blue-light));
    box-shadow: 0 0 10px rgba(var(--accent-blue-rgb), 0.5);
    transition: height 0.1s ease-out;
}

.timeline-step {
    position: relative;
    display: flex;
    gap: 3.5rem;
    margin-bottom: 5rem;
    opacity: 0.3;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.timeline-step.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .timeline-step {
        gap: 1.5rem;
    }
}

.timeline-node {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(10, 10, 12, 0.8);
    border: 1px solid var(--steel-border);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    position: relative;
    z-index: 5;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    transition: var(--transition-smooth);
}

.timeline-step.active .timeline-node {
    border-color: var(--accent-blue-light);
    box-shadow: 0 0 25px rgba(var(--accent-blue-rgb), 0.2);
    transform: scale(1.05);
}

.timeline-step-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.timeline-step-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.timeline-step-content p {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.5;
    max-width: 650px;
}

/* ──────────────────────────────────────────────────────────
   8. SECTION 6 - PARTENAIRES & ÉCOSYSTÈME
   ────────────────────────────────────────────────────────── */
.ecosystem-section {
    padding: 80px 0;
    background: var(--bg-deep);
    border-top: 1px solid rgba(255,255,255,0.02);
    position: relative;
    z-index: 10;
}

.ecosystem-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.ecosystem-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 3.5rem;
}

.logo-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 5rem;
}

@media (max-width: 768px) {
    .logo-grid {
        gap: 3rem;
    }
}

.partner-logo-item {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0.5;
    transition: var(--transition-fast);
    cursor: default;
}

.partner-logo-item:hover {
    opacity: 0.95;
    color: var(--text-white);
}

/* ──────────────────────────────────────────────────────────
   9. SECTION 7 - FORMULAIRE D'INSCRIPTION ULTRA-PREMIUM
   ────────────────────────────────────────────────────────── */
.registration-section {
    padding: 210px 0;
    background: var(--bg-deep);
    position: relative;
    z-index: 10;
    overflow: hidden;
}

/* Glowing backlights behind register */
.reg-backlight {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(var(--accent-blue-rgb), 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.reg-card {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
    background: rgba(16, 16, 22, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-radius: 24px;
    padding: 4.5rem 4rem;
    box-shadow: 
        0 50px 100px rgba(0, 0, 0, 0.6),
        0 1px 0 rgba(255, 255, 255, 0.12) inset;
}

@media (max-width: 768px) {
    .reg-card {
        padding: 2.5rem 1.5rem;
    }
}

.reg-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.reg-title {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-white);
    margin-bottom: 0.8rem;
}

.reg-subtitle {
    font-size: 1rem;
    color: var(--text-gray);
}

/* Forms Fields with Floating Labels */
.reg-form {
    display: flex;
    flex-direction: column;
    gap: 2.2rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 2.2rem;
    }
}

.input-group {
    position: relative;
    width: 100%;
}

.input-group input {
    width: 100%;
    padding: 0.8rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--steel-border);
    color: var(--text-white);
    font-family: var(--font-family);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-fast);
}

.input-group input:focus {
    border-color: var(--accent-blue-light);
}

.input-group label {
    position: absolute;
    left: 0;
    top: 0.8rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    pointer-events: none;
    transition: var(--transition-fast);
}

/* Floating Label logic when input is focused or filled */
.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label {
    top: -1.1rem;
    font-size: 0.75rem;
    color: var(--accent-blue-light);
    letter-spacing: 0.05em;
    font-weight: 600;
}

.input-group .input-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 1px;
    width: 0%;
    background: var(--accent-blue-light);
    box-shadow: 0 0 8px var(--accent-blue-light);
    transition: var(--transition-smooth);
}

.input-group input:focus ~ .input-bar {
    width: 100%;
}

/* Submit Area */
.form-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 1.5rem;
    gap: 1.5rem;
}

.reg-terms {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.4;
    max-width: 480px;
}

.btn-submit-premium {
    width: 100%;
    max-width: 320px;
    background: var(--text-white);
    color: var(--bg-deep);
    border: 1px solid var(--text-white);
    font-size: 1rem;
    font-weight: 700;
    padding: 1.2rem 2rem;
    border-radius: 100px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 30px rgba(255,255,255,0.1);
}

.btn-submit-premium:hover {
    background: var(--accent-blue);
    color: var(--text-white);
    border-color: var(--accent-blue);
    box-shadow: 0 10px 40px rgba(var(--accent-blue-rgb), 0.35);
    transform: translateY(-2px);
}

.btn-submit-premium svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    transition: var(--transition-fast);
}

.btn-submit-premium:hover svg {
    transform: translateX(4px);
}

/* ──────────────────────────────────────────────────────────
   9.5 PREMIUM PROFILING CUSTOMIZATION
   ────────────────────────────────────────────────────────── */
.reg-profile-customization {
    margin: 3.5rem 0;
    padding: 2.8rem;
    background: rgba(20, 20, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        inset 0 1px 0 rgba(255, 255, 255, 0.08), 
        0 20px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 2.8rem;
    animation: fadeIn 0.8s ease forwards;
}

.profile-custom-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.profile-custom-icon {
    font-size: 1.25rem;
    color: var(--accent-blue-light);
    filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.3));
    margin-top: 0.15rem;
}

.profile-custom-header-text {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.profile-custom-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-silver);
    letter-spacing: -0.01em;
}

.profile-custom-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.profile-question-group {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.profile-question-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-silver);
    letter-spacing: 0.01em;
}

.profile-options-grid {
    display: grid;
    gap: 1rem;
}

.profile-options-grid.grid-4-cols {
    grid-template-columns: repeat(4, 1fr);
}

.profile-options-grid.grid-3-cols {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 992px) {
    .profile-options-grid.grid-4-cols {
        grid-template-columns: repeat(2, 1fr);
    }
    .profile-options-grid.grid-3-cols {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .profile-options-grid.grid-4-cols,
    .profile-options-grid.grid-3-cols {
        grid-template-columns: 1fr;
    }
    .reg-profile-customization {
        padding: 1.5rem 1.2rem;
        margin: 2rem 0;
        gap: 1.8rem;
    }
    .profile-custom-header {
        gap: 0.75rem;
    }
}

.profile-option {
    cursor: pointer;
    position: relative;
    display: block;
}

.profile-option input[type="radio"],
.profile-option input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.profile-option-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0.95rem 1.4rem;
    font-size: 0.85rem;
    font-weight: 550;
    color: var(--text-gray);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
    height: 100%;
}

.profile-option:hover .profile-option-btn {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.16);
    color: var(--text-white);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(-1px);
}

/* Bullet indicator */
.profile-option-btn::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-blue-light);
    box-shadow: 0 0 8px var(--accent-blue-light);
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    margin-right: 0;
    flex-shrink: 0;
}

.profile-option input[type="radio"]:checked + .profile-option-btn,
.profile-option input[type="checkbox"]:checked + .profile-option-btn {
    background: rgba(0, 112, 243, 0.18);
    border-color: #0070f3;
    color: var(--text-white);
    box-shadow: 
        0 0 25px rgba(0, 112, 243, 0.35), 
        0 0 5px rgba(56, 189, 248, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.profile-option input[type="radio"]:checked + .profile-option-btn::before,
.profile-option input[type="checkbox"]:checked + .profile-option-btn::before {
    opacity: 1;
    transform: scale(1);
    width: 6px;
    margin-right: 0.65rem;
}

/* Form Submission Feedback */
.form-success-message {
    display: none;
    text-align: center;
    animation: fadeIn 0.6s ease forwards;
}

.success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 1.5rem;
    font-size: 1.75rem;
}

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

/* ──────────────────────────────────────────────────────────
   10. FOOTER EVENT & COMMUTATEUR D'ÉDITIONS
   ────────────────────────────────────────────────────────── */
.premium-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--steel-border);
    padding: 5rem 0 3rem;
    position: relative;
    z-index: 10;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

.footer-brand-info h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    max-width: 480px;
}

.footer-branding-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    color: var(--text-white);
}

.footer-branding-arrow span.arrow {
    color: var(--accent-blue-light);
}

.footer-branding-arrow span.action {
    color: var(--accent-blue-light);
}

/* Scalable Edition Selector */
.footer-edition-selector h5 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 700;
}

.edition-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.edition-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-gray);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.edition-item:hover {
    color: var(--text-white);
}

.edition-item.active {
    color: var(--text-white);
    font-weight: 600;
}

.edition-item.active::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-blue-light);
}

.edition-item.upcoming {
    opacity: 0.5;
    cursor: not-allowed;
}

.edition-item.upcoming:hover {
    color: var(--text-gray);
}

.edition-badge {
    font-size: 0.6rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--steel-border);
    color: var(--text-muted);
}

/* Legal Footer Bottom */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.02);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

@media (max-width: 576px) {
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--text-white);
}

/* ──────────────────────────────────────────────────────────
   11. SCROLL REVEAL ANIMATIONS
   ────────────────────────────────────────────────────────── */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ──────────────────────────────────────────────────────────
   12. GLOWING DIVIDERS & PREMIUM PROFILE LABELS
   ────────────────────────────────────────────────────────── */

/* Glowing alpine-blue precision divider */
.glowing-divider {
    height: 1px;
    width: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 112, 243, 0.05) 20%, 
        rgba(56, 189, 248, 0.25) 50%, 
        rgba(0, 112, 243, 0.05) 80%, 
        transparent 100%
    );
    position: relative;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.1);
}

/* Subtle profiling question subtitle instruction */
.profile-question-help {
    font-size: 0.75rem;
    color: var(--accent-blue-light);
    font-weight: 500;
    margin-top: -0.6rem;
    margin-bottom: 0.2rem;
    opacity: 0.85;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.profile-question-help::before {
    content: '•';
    color: var(--accent-blue-light);
}

/* ──────────────────────────────────────────────────────────
   13. PREMIUM MINIMALIST CREDENTIALS BLOCK (SWISS BEPLUS / COGITAVEN)
   ────────────────────────────────────────────────────────── */
.credentials-block {
    margin-top: 10rem;
    padding-top: 6rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    position: relative;
    width: 100%;
}

.credentials-heading {
    margin-bottom: 5rem;
}

.alliance-title {
    display: inline-block;
    color: #D7E3F2;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.9;
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid rgba(120, 180, 255, 0.18);
    box-shadow: 0 0 30px rgba(80, 160, 255, 0.08);
    transition: var(--transition-smooth);
}

.credentials-inner {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 6rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.credential-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition-smooth);
}

.cred-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 2.2rem;
    font-weight: 500;
}

.cred-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
}

.cred-logo-icon {
    width: 75px;
    height: 75px;
    color: var(--text-silver);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.45;
    transition: var(--transition-smooth);
}

.cred-logo-icon svg,
.cred-logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.credential-item:hover .cred-logo-icon {
    opacity: 0.95;
    color: var(--text-white);
    transform: scale(1.05);
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.08));
}

/* Swiss Beplus specific glow on hover */
.credential-item:first-child:hover .cred-logo-icon {
    color: var(--text-white);
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.12));
}

/* Cogitaven specific glow on hover */
.credential-item:last-child:hover .cred-logo-icon {
    color: var(--accent-blue-light);
    filter: drop-shadow(0 0 25px rgba(56, 189, 248, 0.25));
}

/* Force le logo Cogitaven en blanc par défaut sur fond sombre */
.credential-item:last-child .cred-logo-icon img {
    filter: brightness(0) invert(1);
    transition: var(--transition-smooth);
}

/* Accentue l'effet de luminescence du logo Cogitaven blanc au survol */
.credential-item:last-child:hover .cred-logo-icon img {
    filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(56, 189, 248, 0.6));
}

.cred-brand-name {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.01em;
    font-family: var(--font-family);
}

.cred-desc {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.55;
    max-width: 340px;
    font-weight: 400;
}

.credential-vertical-line {
    width: 1px;
    background: linear-gradient(to bottom, 
        transparent 0%, 
        rgba(255, 255, 255, 0.08) 20%, 
        rgba(255, 255, 255, 0.08) 80%, 
        transparent 100%
    );
    align-self: stretch;
}

/* Responsiveness */
@media (max-width: 768px) {
    .credentials-block {
        margin-top: 6rem;
        padding-top: 4rem;
    }
    
    .credentials-inner {
        flex-direction: column;
        gap: 4rem;
        padding: 0 1rem;
    }
    
    .credential-vertical-line {
        width: 100%;
        height: 1px;
        background: linear-gradient(to right, 
            transparent 0%, 
            rgba(255, 255, 255, 0.08) 20%, 
            rgba(255, 255, 255, 0.08) 80%, 
            transparent 100%
        );
        margin: 1rem 0;
    }
    
    .cred-label {
        margin-bottom: 1.5rem;
    }
    
    .cred-logo-icon {
        width: 65px;
        height: 65px;
    }
    
    .alliance-title {
        font-size: 13px;
        letter-spacing: 0.12em;
        padding: 8px 14px;
        white-space: normal;
        line-height: 1.4;
    }
}

/* ==========================================================================
   BREADCRUMB / BACK TO COGITAVEN SYSTEM
   ========================================================================== */
.nav-brand-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-back-to-parent {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-back-to-parent:hover {
    color: var(--text-silver);
}

.nav-back-to-parent .back-arrow {
    transition: transform 0.3s ease;
}

.nav-back-to-parent:hover .back-arrow {
    transform: translateX(-3px);
}

.nav-brand-separator {
    color: rgba(255, 255, 255, 0.15);
    font-size: 0.85rem;
    font-weight: 300;
    pointer-events: none;
}