/*
Theme Name: DigitalFlow Agency
Description: Un thème moderne pour agence digitale avec mode sombre/clair, formulaire de contact avancé et design épuré.
Author: DigitalFlow Team
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.8.2
Requires PHP: 8.0
License: GPL v2 or later
Text Domain: digitalflow
Domain Path: /languages/
*/

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

:root {
    --primary-blue: #2563eb;
    --light-blue: #3b82f6;
    --soft-blue: #60a5fa;
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Variables pour le mode sombre */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-400);
    --border-color: var(--gray-200);
    --card-bg: var(--white);
    --header-bg: rgba(255, 255, 255, 0.95);
    --mockup-bg: var(--gray-50);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #334155;
    --card-bg: #1e293b;
    --header-bg: rgba(15, 23, 42, 0.95);
    --mockup-bg: #1e293b;
    --blue-50: #1e3a8a;
    --blue-100: #1e40af;
    --gray-50: #1e293b;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 1001;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.theme-toggle .icon {
    font-size: 18px;
    transition: transform 0.3s ease;
}

/* Header épuré */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: var(--header-bg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-blue);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.cta-nav {
    background: var(--primary-blue);
    color: var(--white);
    padding: 0.75rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-nav:hover {
    background: var(--light-blue);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Hero épuré */
.hero {
    padding: 150px 0 100px;
    background: var(--bg-primary);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.hero-content .subtitle {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
    font-weight: 500;
}

.hero-content .description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-mockup {
    background: var(--mockup-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    max-width: 400px;
}

.hero-mockup:hover {
    transform: translateY(-10px);
}

.mockup-header {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 2rem;
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
}

.mockup-dot:first-child { background: #ff5f57; }
.mockup-dot:nth-child(2) { background: #ffbd2e; }
.mockup-dot:nth-child(3) { background: #28ca42; }

.mockup-content {
    color: var(--primary-blue);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Sections avec espacement généreux */
.section {
    padding: 120px 0;
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Expertises avec alternance */
.expertise-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8rem;
    align-items: center;
    margin-bottom: 120px;
}

.expertise-block:nth-child(even) {
    direction: rtl;
}

.expertise-block:nth-child(even) > * {
    direction: ltr;
}

.expertise-badge {
    display: inline-block;
    background: var(--blue-50);
    color: var(--primary-blue);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid var(--blue-100);
}

.expertise-title {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.expertise-description {
    font-size: 1.3rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
    line-height: 1.5;
    font-weight: 500;
}

.expertise-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.expertise-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--blue-200);
}

.feature-item::before {
    content: "✓";
    background: var(--primary-blue);
    color: var(--white);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
    flex-shrink: 0;
}

.expertise-quote {
    font-style: italic;
    color: var(--text-secondary);
    border-left: 4px solid var(--primary-blue);
    padding-left: 2rem;
    font-size: 1.2rem;
    line-height: 1.6;
    background: var(--blue-50);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-blue);
}

.expertise-visual {
    height: 500px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--blue-50) 0%, var(--blue-100) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.visual-placeholder {
    color: var(--primary-blue);
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Section What We Do épurée */
.what-header {
    text-align: center;
    margin-bottom: 8rem;
}

.what-header h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.what-header p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Cases d'étude */
.case-study {
    max-width: 1100px;
    margin: 0 auto;
    background: transparent;
}

.case-header {
    background: none;
    color: var(--text-primary);
    padding: 0 0 6rem 0;
    text-align: left;
    position: relative;
    overflow: visible;
}

.case-client {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.case-category {
    background: none;
    color: var(--primary-blue);
    padding: 0;
    border-radius: 0;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
    backdrop-filter: none;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.case-date {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
}

.case-content {
    padding: 0;
}

.case-challenge {
    margin-bottom: 8rem;
}

.case-section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: block;
}

.case-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 3rem;
    max-width: 800px;
}

.case-solution {
    margin-bottom: 8rem;
}

.case-gallery {
    margin: 8rem 0;
}

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

.gallery-main {
    grid-column: span 2;
    aspect-ratio: 16/9;
    border-radius: 0;
    overflow: hidden;
    margin-bottom: 4rem;
}

.gallery-item {
    aspect-ratio: 4/3;
    border-radius: 0;
    overflow: hidden;
    transition: opacity 0.3s ease;
}

.gallery-item:hover {
    opacity: 0.8;
    transform: none;
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: none;
}

.case-cta {
    text-align: center;
    padding: 6rem 0;
    background: none;
    border-radius: 0;
    margin-top: 6rem;
}

.case-cta h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: none;
    color: var(--text-primary);
    padding: 0;
    border-radius: 0;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--text-primary);
    letter-spacing: 0.5px;
}

.case-link:hover {
    background: none;
    transform: none;
    box-shadow: none;
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

/* Section Méthode */
.method-section {
    background: var(--bg-primary);
    padding: 120px 0;
    overflow: hidden;
}

.method-header {
    text-align: center;
    margin-bottom: 8rem;
}

.method-header h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.method-header .subtitle {
    font-size: 1.4rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
    font-weight: 600;
}

.method-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Étapes de la méthode */
.method-steps {
    position: relative;
}

.method-timeline {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--soft-blue) 100%);
    transform: translateX(-50%);
    border-radius: 2px;
}

.method-step {
    display: grid;
    grid-template-columns: 1fr 100px 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 8rem;
    position: relative;
}

.method-step:nth-child(even) {
    direction: rtl;
}

.method-step:nth-child(even) > * {
    direction: ltr;
}

.method-step:nth-child(even) .step-content {
    text-align: right;
}

.method-step:nth-child(odd) .step-content {
    text-align: left;
}

.step-number {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    position: relative;
    z-index: 2;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
}

.step-number:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.4);
}

.step-content {
    padding: 2rem;
}

.step-badge {
    display: inline-block;
    background: var(--blue-50);
    color: var(--primary-blue);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid var(--blue-100);
}

.step-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.2;
}

.step-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.step-features {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.step-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.75rem 0;
}

.step-feature::before {
    content: "→";
    background: var(--primary-blue);
    color: var(--white);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: bold;
    flex-shrink: 0;
}

.step-visual {
    height: 300px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--blue-50) 0%, var(--blue-100) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.step-visual:hover {
    transform: translateY(-10px);
}

.visual-icon {
    font-size: 4rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.visual-content {
    text-align: center;
    color: var(--primary-blue);
    font-weight: 600;
}

/* Statistiques de la méthode */
.method-stats {
    background: var(--bg-secondary);
    padding: 6rem 0;
    margin-top: 6rem;
    border-radius: 20px;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-item {
    position: relative;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Testimonials */
.testimonials {
    background: var(--bg-primary);
    text-align: center;
}

.testimonials h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--text-primary);
}

.testimonial-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 4rem;
    border-radius: 20px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.testimonial-quote {
    font-size: 1.5rem;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 3rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    font-size: 1.2rem;
}

.author-info h4 {
    font-weight: 600;
    color: var(--text-primary);
}

.author-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* CTA Section */
.cta-section {
    background: var(--bg-primary);
    color: var(--text-primary);
    text-align: center;
    padding: 120px 0 140px;
}

.cta-section h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -1px;
    color: var(--text-primary);
}

.cta-section > .container > p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    line-height: 1.6;
}

/* Formulaire de contact modernisé */
.contact-form-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.contact-form {
    background: transparent;
    padding: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.form-group.col-6 {
    grid-column: span 6;
}

.form-group.col-4 {
    grid-column: span 4;
}

.form-group.col-12 {
    grid-column: span 12;
}

.form-group.col-8 {
    grid-column: span 8;
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

.form-input,
.form-select,
.form-textarea {
    padding: 1.25rem 0;
    border: none;
    border-bottom: 2px solid var(--gray-200);
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-bottom-color: var(--primary-blue);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    padding-top: 1rem;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0 center;
    background-size: 20px;
    padding-right: 30px;
}

[data-theme="dark"] .form-select {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23cbd5e1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
}

/* Sélection d'urgence */
.urgency-section {
    grid-column: span 12;
    margin: 2rem 0;
}

.urgency-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
    letter-spacing: 0.3px;
}

.urgency-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.urgency-option {
    position: relative;
}

.urgency-radio {
    position: absolute;
    opacity: 0;
}

.urgency-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    text-align: center;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.urgency-label::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: transparent;
    transition: all 0.3s ease;
}

.urgency-radio:checked + .urgency-label {
    background: var(--blue-50);
    color: var(--primary-blue);
    font-weight: 600;
    transform: translateY(-4px);
}

.urgency-radio:checked + .urgency-label::before {
    background: var(--primary-blue);
}

.urgency-label:hover {
    transform: translateY(-2px);
    background: var(--card-bg);
}

.urgency-emoji {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.urgency-text {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.urgency-desc {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Bouton de soumission */
.submit-section {
    text-align: center;
    margin-top: 4rem;
}

.submit-button {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    color: var(--white);
    padding: 1.5rem 4rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 200px;
}

.submit-button::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 0.5s;
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.4);
}

.submit-button:hover::before {
    left: 100%;
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Messages */
.success-message,
.error-message {
    padding: 1.5rem 2rem;
    border-radius: 16px;
    margin-top: 2rem;
    text-align: center;
    font-weight: 500;
    display: none;
    backdrop-filter: blur(10px);
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 6rem 0 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--bg-primary);
}

.footer-brand p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--bg-primary);
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    display: block;
    margin-bottom: 0.75rem;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--bg-primary);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-700);
    text-align: center;
    color: var(--text-muted);
}

/* Mobile hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-secondary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ========================================
   STYLES SPÉCIFIQUES AU BLOG
======================================== */

/* Header blog */
.blog-header {
    background: var(--bg-primary);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.blog-nav {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.blog-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.blog-nav a:hover {
    color: var(--primary-blue);
}

.blog-nav a.active {
    color: var(--primary-blue);
    font-weight: 600;
}

/* Container blog */
.blog-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 8rem;
    margin-top: 6rem;
    margin-bottom: 8rem;
}

/* Article principal */
.article-main {
    max-width: 800px;
}

.article-header {
    margin-bottom: 6rem;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.article-category {
    background: var(--blue-50);
    color: var(--primary-blue);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

.article-date {
    font-weight: 500;
}

.article-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
}

.article-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.article-subtitle {
    font-size: 1.4rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 4rem;
}

.article-stats {
    display: flex;
    gap: 3rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 4rem;
}

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

.article-stats .stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: block;
}

.article-stats .stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Hero image */
.article-hero {
    margin-bottom: 6rem;
}

.hero-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: 0;
}

.image-caption {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 1rem;
    text-align: center;
}

/* Contenu article */
.article-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.article-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin: 4rem 0 2rem 0;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.article-content h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 3rem 0 1.5rem 0;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: 2rem;
}

.article-content ul, .article-content ol {
    margin: 2rem 0;
    padding-left: 2rem;
}

.article-content li {
    margin-bottom: 0.75rem;
}

/* Citation */
.article-quote {
    background: var(--bg-secondary);
    padding: 3rem;
    margin: 4rem 0;
    border-left: 4px solid var(--primary-blue);
    font-size: 1.3rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.6;
}

.quote-author {
    font-size: 1rem;
    font-style: normal;
    font-weight: 600;
    color: var(--primary-blue);
    margin-top: 1rem;
}

/* Image dans article */
.article-image {
    margin: 4rem 0;
}

.article-image img {
    width: 100%;
    border-radius: 0;
}

/* CTA dans article */
.article-cta {
    background: var(--bg-secondary);
    padding: 4rem;
    margin: 6rem 0;
    text-align: center;
}

.cta-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.cta-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: var(--primary-blue);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

/* Tags */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 4rem 0;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.tag:hover {
    background: var(--blue-50);
    color: var(--primary-blue);
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 8rem;
    height: fit-content;
}

.sidebar-section {
    margin-bottom: 4rem;
}

.sidebar-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

/* Auteur box */
.author-box {
    background: var(--bg-secondary);
    padding: 2rem;
    text-align: center;
}

.author-box-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem auto;
}

.author-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.author-role {
    font-size: 0.9rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 1rem;
}

.author-bio {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Articles liés */
.related-articles {
    margin-top: 3rem;
}

.related-item {
    display: block;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.related-item:hover {
    transform: translateX(0.5rem);
}

.related-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.related-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Sommaire */
.table-of-contents {
    background: var(--bg-secondary);
    padding: 2rem;
}

.toc-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.toc-list {
    list-style: none;
    padding: 0;
}

.toc-item {
    margin-bottom: 0.75rem;
}

.toc-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.toc-link:hover {
    color: var(--primary-blue);
}

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

@media (max-width: 1024px) {
    .method-step {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .method-step:nth-child(even) {
        direction: ltr;
    }

    .method-step:nth-child(even) .step-content,
    .method-step:nth-child(odd) .step-content {
        text-align: center;
    }

    .method-timeline {
        display: none;
    }

    .step-visual {
        height: 250px;
        order: -1;
    }

    .form-group.col-6 {
        grid-column: span 12;
    }
    
    .form-group.col-4 {
        grid-column: span 6;
    }
    
    .form-group.col-8 {
        grid-column: span 12;
    }
    
    .urgency-selector {
        grid-template-columns: 1fr;
    }

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

    .gallery-main {
        grid-column: span 1;
    }

    .blog-container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .sidebar {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        position: static;
    }
}

@media (max-width: 768px) {
    .method-header h2 {
        font-size: 2.2rem;
    }

    .step-title {
        font-size: 1.8rem;
    }

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

    .stat-number {
        font-size: 2.5rem;
    }

    .theme-toggle {
        right: 10px;
        top: 90px;
        padding: 10px 12px;
        font-size: 12px;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .expertise-block {
        grid-template-columns: 1fr;
        gap: 4rem;
        margin-bottom: 80px;
    }

    .expertise-block:nth-child(even) {
        direction: ltr;
    }

    .expertise-title {
        font-size: 2rem;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .what-header h2 {
        font-size: 2rem;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .testimonial-card {
        padding: 2rem;
    }

    .contact-form-container {
        padding: 0 1rem;
    }

    .form-grid {
        gap: 1.5rem;
    }

    .form-group.col-6,
    .form-group.col-4,
    .form-group.col-8 {
        grid-column: span 12;
    }

    .urgency-selector {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .urgency-label {
        padding: 1.5rem 1rem;
    }

    .submit-button {
        padding: 1.25rem 3rem;
        width: 100%;
        max-width: 300px;
    }

    .case-header {
        padding: 2rem;
    }

    .case-client {
        font-size: 2rem;
    }

    .case-content {
        padding: 2rem;
    }

    .case-section-title {
        font-size: 1.5rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .gallery-main {
        grid-column: span 1;
        margin-bottom: 1rem;
    }

    /* Blog responsive */
    .blog-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border-color);
        gap: 1.5rem;
    }

    .blog-nav.active {
        display: flex;
    }

    .blog-container {
        padding: 0 1rem;
        margin-top: 3rem;
    }

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

    .article-subtitle {
        font-size: 1.2rem;
    }

    .article-content h2 {
        font-size: 1.8rem;
    }

    .article-stats {
        gap: 1.5rem;
    }

    .header-container {
        padding: 0 1rem;
    }

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

    .article-cta {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .theme-toggle {
        padding: 8px 10px;
        font-size: 11px;
    }

    .cta-section {
        padding: 80px 0 100px;
    }

    .form-grid {
        gap: 1rem;
    }

    .urgency-label {
        padding: 1.25rem 0.75rem;
    }

    .urgency-emoji {
        font-size: 1.5rem;
    }

    .submit-button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    .case-header {
        padding: 1.5rem;
    }

    .case-client {
        font-size: 1.8rem;
    }

    .case-content {
        padding: 1.5rem;
    }
}