/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */
:root {
    --color-bg: #FAFAF8;
    --color-bg-alt: #F0EDE8;
    --color-bg-dark: #1A1A1A;
    --color-text: #1A1A1A;
    --color-text-light: #555555;
    --color-text-inverse: #FAFAF8;
    --color-accent: #2D5A3D;
    --color-accent-light: #3A7550;
    --color-accent-warm: #C4956A;
    --color-accent-warm-light: #D4A87D;
    --color-border: #E0DCD6;
    --color-border-light: #EDEAE5;
    --font-heading: 'DM Serif Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 1140px;
    --header-height: 72px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.15rem; font-family: var(--font-body); font-weight: 600; }

p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

.lead {
    font-size: 1.15rem;
    line-height: 1.8;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

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

.section-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.section-dark p {
    color: rgba(250, 250, 248, 0.75);
}

.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-warm { color: var(--color-accent-warm); }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
}

.btn-primary:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 90, 61, 0.25);
}

.btn-warm {
    background-color: var(--color-accent-warm);
    color: white;
}

.btn-warm:hover {
    background-color: var(--color-accent-warm-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 149, 106, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-text-inverse);
    border: 2px solid rgba(250, 250, 248, 0.4);
}

.btn-outline-light:hover {
    border-color: var(--color-text-inverse);
    background: rgba(250, 250, 248, 0.1);
}

.btn-link {
    background: none;
    padding: 0;
    color: var(--color-accent);
    font-weight: 600;
    border-bottom: 2px solid transparent;
}

.btn-link:hover {
    border-bottom-color: var(--color-accent);
}

.btn-arrow::after {
    content: '→';
    transition: transform var(--transition);
}

.btn-arrow:hover::after {
    transform: translateX(4px);
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    background: rgba(250, 250, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

.header.scrolled {
    border-bottom-color: var(--color-border-light);
    box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

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

.nav { display: flex; align-items: center; gap: 0; }

.nav a {
    display: block;
    padding: 8px 18px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: 6px;
    transition: all var(--transition);
    position: relative;
}

.nav a:hover,
.nav a.active {
    color: var(--color-text);
}

.nav a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 18px;
    right: 18px;
    height: 2px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    cursor: pointer;
}

.nav-dropdown-toggle::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    vertical-align: middle;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    transition: transform var(--transition);
}

.nav-dropdown:hover .nav-dropdown-toggle::after {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 260px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition);
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-menu a {
    padding: 10px 20px;
    font-size: 0.85rem;
    border-radius: 0;
}

.nav-dropdown-menu a:hover {
    background-color: var(--color-bg-alt);
}

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

.nav-cta a {
    background-color: var(--color-accent);
    color: white !important;
    border-radius: 6px;
    padding: 8px 20px;
}

.nav-cta a:hover {
    background-color: var(--color-accent-light);
}

.nav-cta a.active::after {
    display: none;
}

/* Mobile menu button */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    margin: 6px 0;
    transition: all var(--transition);
    border-radius: 2px;
}

.menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}
.menu-toggle.open span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* ========================================
   HERO
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26, 26, 26, 0.78) 0%,
        rgba(26, 26, 26, 0.55) 50%,
        rgba(45, 90, 61, 0.35) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
    padding: 60px 0;
}

.hero h1 {
    color: white;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    color: rgba(255,255,255,0.85);
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 40px;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ========================================
   PAGE HEADER (for inner pages)
   ======================================== */
.page-header {
    padding: 140px 0 60px;
    background-color: var(--color-bg-alt);
    text-align: center;
}

.page-header .overline {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.page-header h1 {
    color: var(--color-text);
    margin-bottom: 16px;
}

.page-header p {
    max-width: 620px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* ========================================
   OFFRES PREVIEW (3 colonnes)
   ======================================== */
.offers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.offer-card {
    background: white;
    border-radius: 12px;
    padding: 40px 32px;
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.offer-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    border-color: var(--color-accent);
}

.offer-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

.offer-card-icon svg {
    width: 28px;
    height: 28px;
    stroke: white;
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.offer-card-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.offer-card h3 {
    margin-bottom: 12px;
}

.offer-card p {
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* ========================================
   POSITIONNEMENT
   ======================================== */
.positioning-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.positioning-image {
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.positioning-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.positioning-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.05);
}

blockquote {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    padding-left: 24px;
    border-left: 3px solid var(--color-accent);
    margin-bottom: 1.5rem;
    font-style: italic;
}

blockquote strong {
    font-style: normal;
}

/* ========================================
   STATS BAR
   ======================================== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    padding: 60px 0;
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    color: var(--color-accent);
    display: block;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.4;
}

.stats-bar-dark .stat-number {
    color: var(--color-accent-warm);
}

.stats-bar-dark .stat-label {
    color: rgba(250, 250, 248, 0.65);
}

/* ========================================
   OFFRE DETAIL PAGES
   ======================================== */
.offre-hero {
    padding: 60px 0 40px;
    text-align: center;
    max-width: 760px;
    margin: 0 auto;
}

.offre-hero .tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    background: rgba(45, 90, 61, 0.08);
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.problem-block {
    max-width: 760px;
    margin: 0 auto;
    padding: 48px;
    background: var(--color-bg-alt);
    border-radius: 12px;
    border-left: 4px solid var(--color-accent-warm);
}

.problem-block p {
    font-size: 1.05rem;
    color: var(--color-text);
    line-height: 1.8;
}

.niveau-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.niveau-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    border: 1px solid var(--color-border-light);
    position: relative;
}

.niveau-card.featured {
    border-color: var(--color-accent);
    box-shadow: 0 4px 24px rgba(45, 90, 61, 0.08);
}

.niveau-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.niveau-badge-1 {
    background: rgba(45, 90, 61, 0.1);
    color: var(--color-accent);
}

.niveau-badge-2 {
    background: rgba(196, 149, 106, 0.15);
    color: #9A7550;
}

.niveau-card h3 {
    margin-bottom: 8px;
}

.niveau-price {
    font-size: 0.9rem;
    color: var(--color-accent-warm);
    font-weight: 600;
    margin-bottom: 20px;
}

.niveau-card ul {
    list-style: none;
    margin-bottom: 20px;
}

.niveau-card ul li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    font-size: 0.92rem;
    color: var(--color-text-light);
}

.niveau-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    opacity: 0.4;
}

.niveau-card .note {
    font-style: italic;
    font-size: 0.9rem;
    padding: 16px;
    background: var(--color-bg-alt);
    border-radius: 8px;
    margin-top: 16px;
}

.benefits-list {
    max-width: 760px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    align-items: flex-start;
}

.benefit-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(45, 90, 61, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.benefit-icon svg {
    width: 16px;
    height: 16px;
    stroke: var(--color-accent);
    fill: none;
    stroke-width: 2;
}

.target-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.target-item {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 16px 20px;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--color-border-light);
    font-size: 0.92rem;
}

.target-item .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
}

/* ========================================
   QUI SUIS-JE
   ======================================== */
.about-intro {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    align-items: start;
}

.about-photo {
    width: 300px;
    height: 380px;
    border-radius: 12px;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.about-photo-placeholder {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.85rem;
}

.about-photo-placeholder svg {
    width: 64px;
    height: 64px;
    stroke: var(--color-border);
    fill: none;
    stroke-width: 1;
    margin-bottom: 12px;
}

.timeline {
    margin-top: 48px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid var(--color-border-light);
    position: relative;
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-period {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
}

.timeline-org {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

.timeline-content h4 {
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.92rem;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.principle-card {
    padding: 32px 24px;
    background: white;
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
    text-align: center;
}

.principle-card h4 {
    margin-bottom: 8px;
    color: var(--color-accent);
}

.principle-card p {
    font-size: 0.88rem;
    margin-bottom: 0;
}

/* ========================================
   CONTACT
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    margin-bottom: 24px;
}

.contact-detail {
    display: flex;
    gap: 16px;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.contact-detail:last-child {
    border-bottom: none;
}

.contact-detail-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(45, 90, 61, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-detail-icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-accent);
    fill: none;
    stroke-width: 1.5;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.92rem;
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.08);
}

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

.form-success {
    display: none;
    text-align: center;
    padding: 40px;
}

.form-success.show {
    display: block;
}

.form-success svg {
    width: 48px;
    height: 48px;
    stroke: var(--color-accent);
    fill: none;
    stroke-width: 1.5;
    margin-bottom: 16px;
}

/* ========================================
   LEGAL SECTIONS
   ======================================== */
.legal-section {
    padding: 80px 0;
}

.legal-content {
    max-width: 760px;
    margin: 0 auto;
}

.legal-content h2 {
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-accent);
}

.legal-content h4 {
    margin-top: 28px;
    margin-bottom: 8px;
    color: var(--color-text);
}

.legal-content p {
    font-size: 0.92rem;
    line-height: 1.8;
}

.legal-content ul li {
    font-size: 0.92rem;
    line-height: 1.8;
}

/* ========================================
   CTA SECTIONS
   ======================================== */
.cta-section {
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    margin-bottom: 12px;
}

.cta-section p {
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto 32px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: 48px 0 32px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.3rem;
}

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

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.85rem;
    color: rgba(250, 250, 248, 0.6);
    transition: color var(--transition);
}

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

.footer-copy {
    width: 100%;
    text-align: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(250, 250, 248, 0.1);
    font-size: 0.8rem;
    color: rgba(250, 250, 248, 0.4);
}

/* ========================================
   PHOTO CREDITS
   ======================================== */
.photo-credit {
    position: absolute;
    bottom: 8px;
    right: 12px;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.5);
    z-index: 2;
    font-family: var(--font-body);
    letter-spacing: 0.02em;
}

.positioning-image .photo-credit {
    color: rgba(0, 0, 0, 0.4);
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }

/* ========================================
   SECTION DIVIDER
   ======================================== */
.section-header {
    max-width: 620px;
    margin: 0 auto 48px;
    text-align: center;
}

.section-header .overline {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.section-header h2 {
    margin-bottom: 16px;
}

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 900;
    border: none;
    box-shadow: 0 4px 12px rgba(45, 90, 61, 0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(45, 90, 61, 0.4);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    stroke: white;
    fill: none;
    stroke-width: 2;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .offers-grid { grid-template-columns: repeat(2, 1fr); }
    .positioning-grid { gap: 40px; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .niveau-grid { grid-template-columns: 1fr; }
    .about-intro { grid-template-columns: 1fr; }
    .about-photo { margin: 0 auto; }
    .timeline-item { grid-template-columns: 150px 1fr; gap: 20px; }
}

@media (max-width: 768px) {
    .section { padding: 64px 0; }

    .nav { 
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: 32px 24px;
        gap: 4px;
        overflow-y: auto;
    }

    .nav.open { display: flex; }

    .nav a {
        font-size: 1.1rem;
        padding: 14px 16px;
    }

    .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        background: transparent;
    }

    .nav-dropdown-menu a {
        font-size: 0.95rem;
    }

    .nav-cta { margin-left: 0; margin-top: 16px; }
    .nav-cta a { display: block; text-align: center; }

    .menu-toggle { display: block; }

    .offers-grid { grid-template-columns: 1fr; }
    .positioning-grid { grid-template-columns: 1fr; }
    .positioning-image { order: -1; }
    .positioning-image img { height: 250px; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; text-align: center; }
    .footer-links { flex-wrap: wrap; justify-content: center; }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .hero-content { padding: 40px 0; }
    .hero-cta-group { flex-direction: column; }
    .hero-cta-group .btn { text-align: center; justify-content: center; }

    .problem-block { padding: 32px 24px; }

    .page-header { padding: 110px 0 40px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .section { padding: 48px 0; }
    .target-list { grid-template-columns: 1fr; }
    .principles-grid { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .fade-up {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .offer-card,
    .btn,
    .back-to-top,
    .nav-dropdown-menu,
    .header {
        transition: none;
    }
}