/* ============================================
   Bertrand MARQUETTE - Consultant SEO Nice
   Modern Professional Website
   ============================================ */

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

:root {
    --primary: #046bd2;
    --primary-dark: #0355a8;
    --primary-light: #e8f2fc;
    --accent: #0ea5e9;
    --dark: #0f172a;
    --heading: #1e293b;
    --text: #334155;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.04), 0 10px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.06), 0 20px 48px rgba(0,0,0,0.08);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.1), 0 30px 60px rgba(0,0,0,0.08);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    transition: all var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--heading);
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--primary);
}

.logo:hover {
    color: var(--heading);
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    padding: 8px 16px;
    border-radius: 8px;
    transition: all var(--transition);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-link.cta-nav {
    background: var(--primary);
    color: white;
    margin-left: 8px;
}

.nav-link.cta-nav:hover {
    background: var(--primary-dark);
    color: white;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--heading);
    border-radius: 2px;
    transition: all var(--transition);
}

.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(5px, -5px);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(4, 107, 210, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(14, 165, 233, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(4, 107, 210, 0.04) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    padding: 60px 0;
}

.hero-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 24px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--heading);
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(4, 107, 210, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    box-shadow: 0 6px 20px rgba(4, 107, 210, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--heading);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.05rem;
    border-radius: 12px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 500;
}

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

.hero-image-wrapper {
    position: relative;
    width: 380px;
    height: 380px;
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 2;
}

.hero-image-decoration {
    position: absolute;
    inset: -12px;
    border-radius: 28px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    opacity: 0.15;
    z-index: 1;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    color: var(--text-light);
    border: 2px solid var(--border);
    transition: all var(--transition);
    animation: bounce 2s infinite;
}

.hero-scroll a:hover {
    color: var(--primary);
    border-color: var(--primary);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* --- Sections --- */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--heading);
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* --- About --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.about-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition);
}

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

.about-main {
    grid-column: 1 / -1;
}

.about-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 14px;
    margin-bottom: 20px;
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 12px;
}

.about-card p {
    color: var(--text);
    margin-bottom: 8px;
}

.about-card p:last-child {
    margin-bottom: 0;
}

/* --- Expertise --- */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.expertise-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity var(--transition);
}

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

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

.expertise-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 16px;
    margin-bottom: 24px;
}

.expertise-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 12px;
}

.expertise-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* --- Services --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: all var(--transition);
    position: relative;
}

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

.service-card.featured {
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(4, 107, 210, 0.1);
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.service-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-light);
    letter-spacing: -0.04em;
    margin-bottom: 16px;
    line-height: 1;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-list {
    list-style: none;
}

.service-list li {
    position: relative;
    padding-left: 24px;
    font-size: 0.9rem;
    color: var(--text);
    margin-bottom: 8px;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
}

/* --- Méthode --- */
.method-grid {
    max-width: 700px;
    margin: 0 auto;
}

.method-step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition);
}

.method-step:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.method-number {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    border-radius: 16px;
}

.method-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 8px;
}

.method-content p {
    color: var(--text-light);
    line-height: 1.7;
}

.method-connector {
    width: 2px;
    height: 32px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    margin: 0 auto;
    border-radius: 2px;
    opacity: 0.3;
}

/* --- Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 24px;
}

.contact-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 12px;
}

.contact-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 4px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.contact-card a {
    color: var(--primary);
    font-weight: 500;
}

.contact-socials {
    margin-top: 16px;
}

.contact-socials h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 12px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-alt);
    color: var(--text);
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid var(--border);
}

.social-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.contact-form-wrapper {
    position: relative;
}

.contact-form-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: left;
    box-shadow: var(--shadow-md);
}

.contact-form-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--heading);
    margin-bottom: 8px;
}

.contact-form-card > p {
    color: var(--text-light);
    margin-bottom: 28px;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--heading);
    margin-bottom: 8px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper svg {
    position: absolute;
    left: 14px;
    color: var(--text-light);
    pointer-events: none;
    z-index: 1;
}

.input-wrapper input,
.input-wrapper select {
    width: 100%;
    padding: 13px 14px 13px 44px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--heading);
    background: var(--bg-alt);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    transition: all var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.input-wrapper select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.input-wrapper input:focus,
.input-wrapper select:focus {
    border-color: var(--primary);
    background: var(--bg);
    box-shadow: 0 0 0 3px rgba(4, 107, 210, 0.1);
}

.input-wrapper input::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

.form-group textarea {
    width: 100%;
    padding: 13px 14px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--heading);
    background: var(--bg-alt);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    transition: all var(--transition);
    outline: none;
    resize: vertical;
    min-height: 120px;
}

.form-group textarea:focus {
    border-color: var(--primary);
    background: var(--bg);
    box-shadow: 0 0 0 3px rgba(4, 107, 210, 0.1);
}

.form-group textarea::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
}

.btn-submit .btn-loader {
    animation: spin 1s linear infinite;
    display: inline-flex;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.form-message {
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
}

.form-message.success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.form-message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.input-error {
    border-color: #ef4444 !important;
}

.input-error-text {
    font-size: 0.8rem;
    color: #ef4444;
    margin-top: 6px;
}

/* --- Footer --- */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding-top: 64px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    color: white;
    display: inline-block;
    margin-bottom: 16px;
}

.footer-brand .logo span {
    color: var(--accent);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 320px;
}

.footer-links h4 {
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    padding: 4px 0;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding: 24px 0;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    text-align: center;
}

/* --- Back to top --- */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
}

/* --- Scroll Animations --- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-content {
        gap: 40px;
    }

    .hero-image-wrapper {
        width: 320px;
        height: 320px;
    }

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

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

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        opacity: 0;
        transition: all var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav.open {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px 16px;
    }

    .nav-link.cta-nav {
        margin-left: 0;
        margin-top: 8px;
    }

    .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-image-wrapper {
        width: 240px;
        height: 240px;
    }

    .hero-scroll {
        display: none;
    }

    .section {
        padding: 64px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

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

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

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .method-step {
        flex-direction: column;
        gap: 16px;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
        align-items: center;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .btn-large {
        padding: 14px 28px;
    }
}