/* ============================================
   VARIABLES & THÈMES - DAVID MULTI-TALENTS
   ============================================ */

:root {
    --primary-blue: #2563EB;
    --primary-purple: #7C3AED;
    --accent-orange: #F97316;
    --accent-green: #10B981;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #E2E8F0;
    --border-color: #CBD5E1;

    --color-design: #FF6B9D;
    --color-community: #00BCD4;
    --color-drive: #FF9800;
    --color-tech: #2196F3;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

body.dark-theme {
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --border-color: #475569;
}

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

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-2xl) 0;
}

/* ============================================
   HEADER
   ============================================ */

.header-david {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo-david {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-avatar {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: white;
    font-size: 1.25rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.logo-text .name {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--primary-blue);
}

.logo-text .tagline {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.nav-main {
    flex: 1;
    margin: 0 var(--spacing-xl);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
    transition: width var(--transition-base);
}

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

.header-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.theme-toggle:hover {
    border-color: var(--primary-blue);
    background: var(--bg-secondary);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

.hero-david {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(124, 58, 237, 0.03) 100%);
    padding: calc(var(--spacing-2xl) * 1.5) 0;
    position: relative;
    overflow: hidden;
}

.hero-david::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-david::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.1s backwards;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.3s backwards;
}

.expertise-grid-hero {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.expertise-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.expertise-item:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.exp-icon {
    font-size: 2rem;
}

.exp-title {
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.5s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-text {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.profile-card {
    position: relative;
    height: 500px;
    perspective: 1000px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.card-content {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.card-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(135deg, var(--color-design), var(--color-community), var(--color-drive), var(--color-tech));
    animation: gradientFlow 8s ease infinite;
}

@keyframes gradientFlow {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.card-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
}

.card-info h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.card-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.skills-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.badge {
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
}

.badge.design {
    background: var(--color-design);
}

.badge.community {
    background: var(--color-community);
}

.badge.drive {
    background: var(--color-drive);
}

.badge.tech {
    background: var(--color-tech);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: white;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1.125rem;
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

/* ============================================
   EXPERTISE CARDS
   ============================================ */

.section-title {
    text-align: center;
    font-size: 2.75rem;
    font-weight: 900;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
    margin: var(--spacing-lg) auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
}

.expertise-full {
    background: var(--bg-secondary);
}

.expertise-cards-large {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.expertise-card-large {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.expertise-card-large:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.card-icon {
    font-size: 2.5rem;
}

.card-header h3 {
    font-size: 1.5rem;
    margin: 0;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.card-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.card-list li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-list li::before {
    content: '✓';
    color: var(--primary-blue);
    font-weight: 900;
    font-size: 1.1rem;
}

.card-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.c-stat {
    flex: 1;
    text-align: center;
}

.c-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-blue);
}

.c-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.card-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary-blue);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.card-link:hover {
    gap: var(--spacing-sm);
}

.design-card {
    border-top: 4px solid var(--color-design);
}

.community-card {
    border-top: 4px solid var(--color-community);
}

.driving-card {
    border-top: 4px solid var(--color-drive);
}

.tech-card {
    border-top: 4px solid var(--color-tech);
}

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

.timeline-section {
    background: var(--bg-primary);
}

.timeline {
    position: relative;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-blue), var(--primary-purple));
}

.timeline-item {
    margin-bottom: var(--spacing-2xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.timeline-item:nth-child(odd) .timeline-year {
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-year {
    order: 2;
}

.timeline-item:nth-child(even) .timeline-content {
    order: 1;
}

.timeline-year {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.timeline-year::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--bg-primary);
    border: 4px solid var(--primary-blue);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    right: -35px;
}

.timeline-item:nth-child(even) .timeline-year::after {
    left: -35px;
    right: auto;
}

.timeline-content {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-blue);
}

.timeline-content.multi {
    border-left-color: var(--primary-purple);
}

.timeline-content h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.timeline-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.timeline-tags span {
    display: inline-block;
    background: var(--bg-primary);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-blue);
}

/* ============================================
   SERVICES TABS
   ============================================ */

.services-section {
    background: var(--bg-secondary);
}

.services-tabs {
    margin-top: var(--spacing-2xl);
}

.tabs-header {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    font-weight: 700;
    cursor: pointer;
    position: relative;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.tab-btn.active {
    color: var(--primary-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
}

.tab-content {
    display: none;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-package {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
    position: relative;
}

.service-package:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.service-package.featured {
    border: 2px solid var(--primary-blue);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.02), rgba(124, 58, 237, 0.02));
}

.package-label {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: white;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
}

.package-level {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
}

.package-price {
    margin-bottom: var(--spacing-lg);
}

.price-num {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-blue);
}

.price-period {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.package-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.package-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.package-features li::before {
    content: '•';
    color: var(--primary-blue);
    font-weight: 900;
    font-size: 1.5rem;
}

/* ============================================
   TESTIMONIALS
   ============================================ */

.testimonials-multi {
    background: var(--bg-primary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.testimonial:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.testimonial-header {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
}

.avatar.design {
    background: linear-gradient(135deg, var(--color-design), rgba(255, 107, 157, 0.2));
}

.avatar.community {
    background: linear-gradient(135deg, var(--color-community), rgba(0, 188, 212, 0.2));
}

.avatar.drive {
    background: linear-gradient(135deg, var(--color-drive), rgba(255, 152, 0, 0.2));
}

.avatar.tech {
    background: linear-gradient(135deg, var(--color-tech), rgba(33, 150, 243, 0.2));
}

.testimonial-info strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.testimonial-info span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stars {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.testimonial p {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}

/* ============================================
   PROCESS
   ============================================ */

.process-multi {
    background: var(--bg-secondary);
}

.process-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
}

.process-col h3 {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.p-step {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.p-step:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.p-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.p-text {
    display: block;
    font-weight: 600;
}

.p-arrow {
    text-align: center;
    color: var(--primary-blue);
    font-weight: 900;
    margin: var(--spacing-sm) 0;
}

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

.cta-final {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: white;
    text-align: center;
    padding: var(--spacing-2xl) 0;
    border-radius: var(--radius-lg);
    margin: var(--spacing-2xl) 0;
}

.cta-final h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.cta-final p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */

.footer-david {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
    color: var(--accent-orange);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-col p {
    opacity: 0.9;
    line-height: 1.8;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--accent-orange);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

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

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ============================================
   STYLES DES PAGES DÉTAILLÉES
   ============================================ */

.page-hero {
    padding: calc(var(--spacing-2xl) * 1.4) 0;
}

.page-hero__content {
    max-width: 780px;
}

.hero-eyebrow {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
    padding: 0.35rem 0.8rem;
    border-radius: var(--radius-full);
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary-blue);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.8rem;
}

.page-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.page-hero p {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.page-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.page-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.section-pill {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
    padding: 0.3rem 0.7rem;
    border-radius: var(--radius-full);
    background: rgba(124, 58, 237, 0.12);
    color: var(--primary-purple);
    font-size: 0.85rem;
    font-weight: 700;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.feature-list {
    list-style: none;
    display: grid;
    gap: 0.7rem;
    margin-top: var(--spacing-md);
}

.feature-list li {
    padding-left: 1.2rem;
    position: relative;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-orange);
    font-weight: 700;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-md);
}

.metric-card {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(124, 58, 237, 0.08));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.metric-card strong {
    display: block;
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.metric-card span {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-md);
}

.process-step {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.process-step span {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-orange);
    font-weight: 800;
}

.testimonial-card {
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent-orange);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.testimonial-card p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.cta-banner {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.cta-banner h2,
.cta-banner p {
    color: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--spacing-lg);
}

.contact-form-david {
    display: grid;
    gap: var(--spacing-md);
}

.form-group {
    display: grid;
    gap: 0.4rem;
}

.form-group label {
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.8rem 0.95rem;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

@media (max-width: 768px) {
    .header-content {
        position: relative;
    }

    .nav-main {
        display: none;
        position: absolute;
        top: calc(100% + 0.75rem);
        left: 0;
        right: 0;
        margin: 0;
        padding: var(--spacing-md);
        background: var(--bg-primary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        z-index: 1100;
    }

    .nav-main.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .expertise-grid-hero {
        grid-template-columns: repeat(2, 1fr);
    }

    .profile-card {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .timeline-year {
        text-align: left;
    }

    .timeline-year::after {
        left: 20px;
        right: auto;
    }

    .tabs-header {
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
    }

    .tab-btn {
        border-bottom: 2px solid var(--border-color);
    }

    .process-columns {
        grid-template-columns: 1fr;
    }

    .page-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid,
    .process-grid,
    .metric-grid {
        grid-template-columns: 1fr 1fr;
    }

    .cta-final h2 {
        font-size: 1.75rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .expertise-grid-hero {
        grid-template-columns: repeat(2, 1fr);
    }

    .expertise-cards-large {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid,
    .process-grid,
    .metric-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}