/**
 * =============================================================================
 * DEMO PAGE - BRAIN TECHNOLOGY
 * Mind-Blowing Interactive Experience with Cutting-Edge Animations
 * =============================================================================
 */

/* Désactiver l'effet de cercle/ripple sur TOUS les clics */
* {
    -webkit-tap-highlight-color: transparent !important;
    -webkit-touch-callout: none !important;
}

button, input, a, [role="button"], [tabindex] {
    -webkit-tap-highlight-color: transparent !important;
    -webkit-touch-callout: none !important;
}

button:focus, button:active, button:hover,
input:focus, input:active, input:hover,
a:focus, a:active, a:hover {
    -webkit-tap-highlight-color: transparent !important;
}

/* Focus ring personnalisé en gris clair pour la page demo */
button:focus, 
input:focus, 
a:focus,
.control-btn:focus,
.btn:focus,
[role="button"]:focus,
[tabindex]:focus {
    outline: 2px solid rgba(200, 200, 200, 0.6) !important;
    outline-offset: 2px !important;
    -webkit-tap-highlight-color: transparent !important;
}

button::-moz-focus-inner {
    border: 0 !important;
}

/* Police Söhne */
@font-face {
    font-family: 'Söhne';
    src: url('../fonts/Sohne-Regular.woff2') format('woff2'),
         url('../fonts/Sohne-Regular.woff') format('woff');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Söhne';
    src: url('../fonts/Sohne-Medium.woff2') format('woff2'),
         url('../fonts/Sohne-Medium.woff') format('woff');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Söhne';
    src: url('../fonts/Sohne-SemiBold.woff2') format('woff2'),
         url('../fonts/Sohne-SemiBold.woff') format('woff');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

/* =============================================================================
   CSS CUSTOM PROPERTIES & FOUNDATION
   ============================================================================= */

:root {
    /* Brand Colors */
    --primary-blue: #3b82f6;
    --primary-indigo: #6366f1;
    --primary-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-violet: #7c3aed;
    --success-green: #10b981;
    --warning-orange: #f59e0b;
    --error-red: #ef4444;
    
    /* Neutral Palette */
    --neutral-900: #0f172a;
    --neutral-800: #1e293b;
    --neutral-700: #334155;
    --neutral-600: #475569;
    --neutral-500: #64748b;
    --neutral-400: #94a3b8;
    --neutral-300: #cbd5e1;
    --neutral-200: #e2e8f0;
    --neutral-100: #f1f5f9;
    --neutral-50: #f8fafc;
    --white: #ffffff;
    
    /* Glass & Blur Effects */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --blur-strong: blur(20px);
    --blur-medium: blur(12px);
    --blur-light: blur(8px);
    
    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Typography Scale */
    --font-family-primary: 'Söhne', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;
    
    /* Animation Timings */
    --duration-fast: 0.15s;
    --duration-normal: 0.3s;
    --duration-slow: 0.5s;
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-indigo) 50%, var(--primary-purple) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    --gradient-dark: linear-gradient(135deg, var(--neutral-900) 0%, var(--neutral-800) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* =============================================================================
   BASE STYLES & RESET
   ============================================================================= */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--neutral-100);
    background: var(--neutral-900);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =============================================================================
   DEMO MAIN CONTAINER
   ============================================================================= */

.demo-main {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.8) 0%, rgba(12, 20, 37, 0.7) 50%, rgba(30, 41, 59, 0.8) 100%);
    display: flex;
    flex-direction: column;
}

/* =============================================================================
   ANIMATED BACKGROUND CANVAS
   ============================================================================= */

#demo-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    opacity: 0.6;
    background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
}

/* =============================================================================
   FLOATING PARTICLES BACKGROUND
   ============================================================================= */

.floating-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-indigo);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 20s infinite linear;
}

.particle:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { top: 20%; left: 80%; animation-delay: -5s; }
.particle:nth-child(3) { top: 60%; left: 20%; animation-delay: -10s; }
.particle:nth-child(4) { top: 80%; left: 70%; animation-delay: -15s; }
.particle:nth-child(5) { top: 40%; left: 90%; animation-delay: -2s; }
.particle:nth-child(6) { top: 90%; left: 30%; animation-delay: -8s; }
.particle:nth-child(7) { top: 30%; left: 60%; animation-delay: -12s; }
.particle:nth-child(8) { top: 70%; left: 10%; animation-delay: -18s; }

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

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-2xl) 0;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: var(--blur-medium);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-200);
    animation: fadeInUp 0.8s var(--ease-smooth) both;
}

.badge-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-indigo);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    color: var(--white);
    animation: fadeInUp 0.8s var(--ease-smooth) 0.2s both;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.gradient-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    animation: expandLine 1s var(--ease-smooth) 1s both;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--neutral-300);
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
    animation: fadeInUp 0.8s var(--ease-smooth) 0.4s both;
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.8s var(--ease-smooth) 0.6s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary-indigo);
    display: block;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    animation: fadeInUp 0.8s var(--ease-smooth) 0.8s both;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--duration-normal) var(--ease-smooth);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-glow);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--duration-slow) var(--ease-smooth);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--neutral-200);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--blur-medium);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--primary-indigo);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    border-radius: 12px;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-smooth);
    z-index: -1;
}

.btn-primary:hover .btn-glow {
    opacity: 0.3;
}

.hero-visual {
    z-index: 2;
    animation: fadeInUp 0.8s var(--ease-smooth) 1s both;
}

/* =============================================================================
   BRAIN TECHNOLOGY LOGO ANIMATION
   ============================================================================= */

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 400px;
    position: relative;
}

.logo-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 400px;
    height: 300px;
}

/* Logo Text */
.logo-text {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    position: relative;
    z-index: 10;
}

.logo-letter {
    font-size: 4rem;
    font-weight: 900;
    color: var(--white);
    text-shadow: 0 0 20px rgba(99, 102, 241, 0.8);
    animation: letterGlow 3s ease-in-out infinite;
    position: relative;
    transition: all 0.3s ease;
}

.logo-letter:hover {
    transform: scale(1.1) translateY(-5px);
    text-shadow: 0 0 30px rgba(99, 102, 241, 1);
}

.logo-letter[data-letter="B"] { animation-delay: 0s; }
.logo-letter[data-letter="R"] { animation-delay: 0.1s; }
.logo-letter[data-letter="A"] { animation-delay: 0.2s; }
.logo-letter[data-letter="I"] { animation-delay: 0.3s; }
.logo-letter[data-letter="N"] { animation-delay: 0.4s; }

/* Logo Subtitle */
.logo-subtitle {
    display: flex;
    gap: 4px;
    position: relative;
    z-index: 10;
}

.subtitle-letter {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--neutral-300);
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.6);
    animation: subtitleGlow 4s ease-in-out infinite;
    transition: all 0.3s ease;
}

.subtitle-letter:hover {
    color: var(--white);
    text-shadow: 0 0 15px rgba(99, 102, 241, 0.8);
}

.subtitle-letter[data-letter="T"] { animation-delay: 0s; }
.subtitle-letter[data-letter="E"] { animation-delay: 0.1s; }
.subtitle-letter[data-letter="C"] { animation-delay: 0.2s; }
.subtitle-letter[data-letter="H"] { animation-delay: 0.3s; }
.subtitle-letter[data-letter="N"] { animation-delay: 0.4s; }
.subtitle-letter[data-letter="O"] { animation-delay: 0.5s; }
.subtitle-letter[data-letter="L"] { animation-delay: 0.6s; }
.subtitle-letter[data-letter="O"] { animation-delay: 0.7s; }
.subtitle-letter[data-letter="G"] { animation-delay: 0.8s; }
.subtitle-letter[data-letter="Y"] { animation-delay: 0.9s; }

/* Logo Glow Effects */
.logo-glow {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.logo-glow-1 {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: glowPulse 4s ease-in-out infinite;
}

.logo-glow-2 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: glowPulse 4s ease-in-out infinite 1s;
}

.logo-glow-3 {
    width: 400px;
    height: 400px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: glowPulse 4s ease-in-out infinite 2s;
}

/* Logo Particles */
.logo-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.logo-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary-indigo);
    border-radius: 50%;
    animation: logoParticleFloat 6s ease-in-out infinite;
    animation-delay: var(--delay);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.8));
}

.logo-particle:nth-child(1) { top: 10%; left: 20%; }
.logo-particle:nth-child(2) { top: 20%; right: 25%; }
.logo-particle:nth-child(3) { bottom: 30%; left: 15%; }
.logo-particle:nth-child(4) { top: 60%; right: 20%; }
.logo-particle:nth-child(5) { bottom: 20%; left: 30%; }
.logo-particle:nth-child(6) { top: 15%; right: 40%; }
.logo-particle:nth-child(7) { bottom: 40%; right: 10%; }
.logo-particle:nth-child(8) { top: 40%; left: 10%; }

/* Energy Rings */
.energy-ring {
    position: absolute;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.energy-ring-1 {
    width: 150px;
    height: 150px;
    animation: energyRingRotate 8s linear infinite;
}

.energy-ring-2 {
    width: 200px;
    height: 200px;
    animation: energyRingRotate 8s linear infinite reverse;
}

.energy-ring-3 {
    width: 250px;
    height: 250px;
    animation: energyRingRotate 12s linear infinite;
}

/* Circuit Lines */
.circuit-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.circuit-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.6), transparent);
    height: 2px;
    animation: circuitFlow 3s ease-in-out infinite;
}

.circuit-line-1 {
    width: 100px;
    top: 20%;
    left: -100px;
    animation-delay: 0s;
}

.circuit-line-2 {
    width: 80px;
    top: 60%;
    right: -80px;
    animation-delay: 0.5s;
}

.circuit-line-3 {
    width: 120px;
    bottom: 30%;
    left: -120px;
    animation-delay: 1s;
}

.circuit-line-4 {
    width: 90px;
    bottom: 60%;
    right: -90px;
    animation-delay: 1.5s;
}

/* =============================================================================
   LOGO IMAGE STYLING - BRAIN TECHNOLOGY
   ============================================================================= */

.logo-image-wrapper {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: logoFloat 3s ease-in-out infinite;
}

.brain-logo-image {
    width: 120px;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.5));
    transition: all 0.3s var(--ease-smooth);
    animation: logoGlow 2s ease-in-out infinite alternate;
}

.brain-logo-image:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.8));
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes logoGlow {
    0% { filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.5)); }
    100% { filter: drop-shadow(0 0 35px rgba(99, 102, 241, 0.8)); }
}

/* =============================================================================
   DEMO SECTION
   ============================================================================= */

.demo-section {
    padding: var(--space-5xl) 0;
    position: relative;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.demo-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.demo-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--white);
}

.demo-subtitle {
    font-size: var(--font-size-lg);
    color: var(--neutral-300);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* =============================================================================
   DEMO INTERFACE
   ============================================================================= */

.demo-interface {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: var(--blur-strong);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-2xl);
    box-shadow: var(--shadow-2xl);
    min-height: 600px;
}

.demo-sidebar {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: var(--space-xl);
    position: relative;
    
    /* Contour lumineux orange */
    box-shadow: 
        0 0 20px rgba(255, 140, 0, 0.3),
        0 0 40px rgba(255, 140, 0, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.3);
}

.demo-sidebar::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 16px;
    background: linear-gradient(135deg,
        rgba(255, 140, 0, 0.6) 0%,
        rgba(255, 69, 0, 0.4) 25%,
        transparent 50%,
        transparent 75%,
        rgba(255, 140, 0, 0.6) 100%
    );
    background-size: 400% 400%;
    animation: glowingBorderDemo 6s ease-in-out infinite;
    z-index: -1;
}

.sidebar-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

/* Logo Sidebar */
.sidebar-logo {
    margin-bottom: var(--space-sm);
}

.sidebar-logo-img {
    height: 45px;
    width: auto;
    filter: drop-shadow(0 4px 12px rgba(255, 140, 0, 0.4));
    transition: all 0.3s var(--ease-smooth);
}

.sidebar-logo-img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 6px 16px rgba(255, 140, 0, 0.6));
}

.sidebar-title-group {
    text-align: center;
}

.sidebar-title-group h3 {
    margin-bottom: var(--space-xs);
}

.sidebar-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--white);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--success-green);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.control-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.control-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.slider-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.slider {
    flex: 1;
    height: 4px;
    background: var(--neutral-700);
    border-radius: 2px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-indigo);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.slider-value {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-indigo);
    min-width: 30px;
}

.toggle-container {
    display: flex;
    align-items: center;
}

.toggle {
    display: none;
}

.toggle-label {
    position: relative;
    width: 50px;
    height: 24px;
    background: var(--neutral-700);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.toggle-label::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--white);
    border-radius: 50%;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.toggle:checked + .toggle-label {
    background: var(--primary-indigo);
}

.toggle:checked + .toggle-label::before {
    transform: translateX(26px);
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.control-btn {
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: var(--white);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-smooth);
    font-weight: 500;
}

.control-btn:hover,
.control-btn.active {
    background: linear-gradient(135deg, 
        rgba(255, 140, 0, 0.8) 0%, 
        rgba(255, 69, 0, 0.6) 100%);
    color: var(--white);
    border-color: rgba(255, 140, 0, 0.8);
    box-shadow: 0 4px 12px rgba(255, 140, 0, 0.3);
}

/* =============================================================================
   DEMO WORKSPACE
   ============================================================================= */

.demo-main-area {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
}

.demo-workspace {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.workspace-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

.workspace-tabs {
    display: flex;
    gap: var(--space-sm);
}

.tab-btn {
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--neutral-400);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--primary-indigo);
    color: var(--white);
    border-color: var(--primary-indigo);
}

.workspace-controls {
    display: flex;
    gap: var(--space-sm);
}

.workspace-controls .control-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.workspace-content {
    flex: 1;
    padding: var(--space-xl);
    position: relative;
}

.tab-content {
    display: none;
    height: 100%;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s var(--ease-smooth);
}

/* =============================================================================
   PROCESSING VISUALIZATION
   ============================================================================= */

.processing-visualization {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.data-flow {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    width: 100%;
    max-width: 800px;
}

.data-node {
    flex: 1;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-xl);
    text-align: center;
    position: relative;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.data-node:hover {
    border-color: var(--primary-indigo);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.node-icon {
    width: 48px;
    height: 48px;
    background: var(--glass-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    color: var(--primary-indigo);
}

.node-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--space-xs);
}

.node-status {
    font-size: var(--font-size-xs);
    color: var(--neutral-400);
}

.input-node .node-status {
    color: var(--accent-cyan);
    animation: pulse 2s infinite;
}

.processing-node .node-status {
    color: var(--warning-orange);
    animation: pulse 2s infinite 1s;
}

.output-node .node-status {
    color: var(--success-green);
}

.flow-line {
    flex: 0 0 100px;
    height: 2px;
    background: var(--neutral-600);
    position: relative;
    overflow: hidden;
}

.flow-particle {
    position: absolute;
    top: 0;
    left: 0;
    width: 20px;
    height: 2px;
    background: var(--primary-indigo);
    border-radius: 1px;
    animation: flowMove 3s infinite linear;
}

/* =============================================================================
   ANALYSIS DASHBOARD
   ============================================================================= */

.analysis-dashboard {
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.chart-container {
    flex: 1;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.metric-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.metric-card:hover {
    border-color: var(--primary-indigo);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.metric-icon {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    color: var(--primary-indigo);
}

.metric-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-xs);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
}

/* =============================================================================
   AUTOMATION WORKFLOW
   ============================================================================= */

.automation-workflow {
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.workflow-step {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-lg);
    transition: all var(--duration-normal) var(--ease-smooth);
}

.workflow-step:hover {
    border-color: var(--primary-indigo);
    transform: translateX(8px);
}

.workflow-step.active {
    border-color: var(--success-green);
    background: rgba(16, 185, 129, 0.1);
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--primary-indigo);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--white);
    font-size: var(--font-size-sm);
}

.workflow-step.active .step-number {
    background: var(--success-green);
}

.step-content {
    flex: 1;
}

.step-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--space-xs);
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
}

.step-status {
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 6px;
    background: var(--neutral-700);
    color: var(--neutral-300);
}

.workflow-step.active .step-status {
    background: var(--success-green);
    color: var(--white);
}

/* =============================================================================
   FEATURES SECTION
   ============================================================================= */

.features-section {
    padding: var(--space-5xl) 0;
    /* Background supprimé pour uniformité */
}

.features-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.features-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-2xl);
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: var(--blur-medium);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--space-2xl);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-smooth);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glass);
    border-radius: 16px;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-smooth);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    border-color: var(--primary-indigo);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--glass-bg);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--primary-indigo);
    position: relative;
    z-index: 1;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.feature-card:hover .feature-icon {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.feature-card p {
    font-size: var(--font-size-base);
    color: var(--neutral-300);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

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

.cta-section {
    padding: var(--space-5xl) 0;
    position: relative;
    /* Background supprimé pour uniformité */
}

/* .cta-section::before supprimé pour uniformité */

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--white);
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--neutral-300);
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
}

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

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

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

@keyframes expandLine {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
    }
    50% {
        transform: translateY(-40px) rotate(180deg);
    }
    75% {
        transform: translateY(-20px) rotate(270deg);
    }
}

@keyframes neuronPulse {
    0%, 100% {
        opacity: 0.6;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.5);
    }
}

@keyframes dataFlow {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0);
    }
}

@keyframes flowMove {
    0% {
        left: -20px;
    }
    100% {
        left: 100%;
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

@keyframes neuralPulse {
    0%, 100% {
        opacity: 0.3;
        stroke-width: 2;
    }
    50% {
        opacity: 0.8;
        stroke-width: 3;
    }
}

@keyframes letterGlow {
    0%, 100% {
        text-shadow: 0 0 20px rgba(99, 102, 241, 0.8);
        transform: scale(1);
    }
    50% {
        text-shadow: 0 0 30px rgba(99, 102, 241, 1);
        transform: scale(1.05);
    }
}

@keyframes subtitleGlow {
    0%, 100% {
        text-shadow: 0 0 10px rgba(99, 102, 241, 0.6);
        opacity: 0.8;
    }
    50% {
        text-shadow: 0 0 15px rgba(99, 102, 241, 0.8);
        opacity: 1;
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes glowingBorderDemo {
    0% { 
        background-position: 0% 50%; 
    }
    50% { 
        background-position: 100% 50%; 
    }
    100% { 
        background-position: 0% 50%; 
    }
}

@keyframes logoParticleFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.6;
    }
    25% {
        transform: translateY(-30px) scale(1.3);
        opacity: 1;
    }
    50% {
        transform: translateY(-60px) scale(1);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-30px) scale(1.2);
        opacity: 0.9;
    }
}

@keyframes energyRingRotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes circuitFlow {
    0% {
        transform: translateX(0);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateX(200px);
        opacity: 0;
    }
}

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

@media (max-width: 1200px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }
    
    .hero-visual {
        order: -1;
    }
    
    .demo-interface {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .demo-sidebar {
        order: 2;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --space-5xl: 4rem;
        --space-4xl: 3rem;
        --space-3xl: 2rem;
    }
    
    .section-container {
        padding: 0 var(--space-lg);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .data-flow {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .flow-line {
        width: 2px;
        height: 50px;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-actions {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-container,
    .section-container {
        padding: 0 var(--space-md);
    }
    
    .logo-wrapper {
        width: 300px;
        height: 225px;
    }
    
    .logo-letter {
        font-size: 2.5rem;
    }
    
    .subtitle-letter {
        font-size: 0.9rem;
    }
    
    .demo-interface {
        padding: var(--space-lg);
    }
}

/* =============================================================================
   ACCESSIBILITY & PERFORMANCE
   ============================================================================= */

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-indigo);
    outline-offset: 2px;
    border-radius: 4px;
}

@media (prefers-contrast: high) {
    :root {
        --glass-bg: rgba(255, 255, 255, 0.1);
        --glass-border: rgba(255, 255, 255, 0.2);
        --neutral-300: #e2e8f0;
        --neutral-400: #cbd5e1;
    }
}

@media print {
    .demo-main {
        background: white;
        color: black;
    }
    
    .hero-section,
    .demo-section,
    .features-section,
    .cta-section {
        break-inside: avoid;
    }
}