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

/* Fonts */
body {
    font-family: 'Syne', sans-serif;
    overflow-x: hidden;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 80px;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

nav.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.logo {
    height: 30px;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 14px;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #FF640A;
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: #FF640A;
}

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

/* ============================= */
/* HAMBURGER MENU                */
/* ============================= */

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: #2E3688;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
    background-color: #FF640A;
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
    background-color: #FF640A;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    right: -100%;
    width: 250px;
    background: white;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 999;
    padding: 30px 0;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu a {
    display: block;
    padding: 15px 30px;
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.mobile-menu a:hover,
.mobile-menu a:active {
    background: rgba(255, 100, 10, 0.05);
    border-left-color: #FF640A;
    color: #FF640A;
}

/* Hero */
.hero {
    padding: 80px 80px;
}

.hero h1 {
    color: #FF640A;
    font-size: 3.4em;
    font-weight: 700;
    line-height: 1;
    max-width: 1100px;
}

.hero .subtitle {
    margin-top: 20px;
    font-size: 1.1em;
    font-weight: 400;
    color: #28367E;
}

/* ============================= */
/* BOUTON CTA HERO               */
/* ============================= */

.hero-cta-btn {
    display: inline-block;
    margin-top: 30px;
    font-family: 'Inter', sans-serif;
    font-size: 1em;
    font-weight: 500;
    padding: 16px 40px;
    line-height: 1;
    border-radius: 999px;
    color: #FF640A;
    border: 1.5px solid #2E3688;
    background: transparent;
    text-decoration: none;
    transition: all 0.25s ease;
}

.hero-cta-btn:hover {
    background-color: #FF640A;
    color: #ffffff;
    border-color: #FF640A;
}

.mockup {
    margin-top: 7.5%;
    display: flex;
    justify-content: center;
}

.mockup img {
    max-width: 25%;
    height: auto;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* Problem section */
.problem {
    padding: 80px 80px;
}

.problem h2 {
    color: #FF640A;
    font-size: 2.5em;
    font-weight: 700;
    line-height: 1.2;
}

.divider {
    width: 100%;
    height: 1px;
    background-color: #ddd;
    margin-top: 20px;
}

/* ============================= */
/* ENERGY STATUS (CENTRÉ)        */
/* ============================= */

.energy-status {
    width: 380px;
    padding: 16px;
    margin: 45px auto 0 auto;
    border-radius: 8px;
}

/* Pourcentage */
.energy-percent {
    font-family: 'Inter', sans-serif;
    font-size: 34px;
    font-weight: 600;
    line-height: 1;
    color: #2E3688;
    margin-bottom: 0px;
    margin-left: -8%;
}

.energy-percent::after {
    content: '%';
}

/* Texte */
.energy-text {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 300;
    line-height: 1.4;
    color: #000000;
}

/* ============================= */
/* RESULTAT                      */
/* ============================= */

.problem-result {
    margin-top: 60px;
    text-align: center;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 1.6em;
    color: #FF640A;
}

/* ============================= */
/* 490 + Explication (STRUCTURE) */
/* ============================= */

.englobe-problem {
    margin-top: 50px;
    display: grid;
    grid-template-columns: 36% 1fr;
    align-items: center;
    gap: 40px;
}

/* ----- BLOC 490€ ----- */
.somm-prob {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    font-family: 'Inter', sans-serif;
    color: #2E3688;
}

.somm-prob p {
    font-size: 4.7em;
    font-weight: 700;
    line-height: 1;
    text-align: left;
}

.somm-prob p::after {
    content: '€ \a / an';
    white-space: pre;
    font-size: 0.9em;
    font-weight: 400;
}

/* ----- TEXTE EXPLICATION ----- */
.explication-prob {
    font-family: 'Inter', sans-serif;
    align-items: center;
}

.explication-prob p {
    font-size: 16px;
    font-weight: 300;
    line-height: 1.4;
    color: #000000;
    margin-bottom: 8px;
}

.explication-prob a {
    font-size: 15px;
    font-weight: 500;
    color: #3b5bdb;
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
    display: inline-block;
    animation: wiggle 5s ease-in-out infinite;
}

@keyframes wiggle {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(5px);
    }
}

.explication-prob a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #3b5bdb;
    transition: width 0.3s ease;
}

.explication-prob a:hover {
    color: #2E3688;
}

.explication-prob a:hover::after {
    width: 100%;
}

/* ============================= */
/* SOLUTION SECTION              */
/* ============================= */

.solution {
    padding: 50px 80px 80px 80px;
}

.solution h2 {
    color: #FF640A;
    font-size: 2.5em;
    font-weight: 700;
    line-height: 1.2;
}

.problementier {
    height: 550px;
    width: 100%;
    margin-top: 5%;
    display: flex;
}

.problementier-inverse {
    margin-top: 8%;
}

.mockup-gauche {
    height: 100%;
    width: 55%;
    align-items: center;
    display: flex;
    justify-content: center;
}

.mockup-gauche img {
    max-height: 100%;
    width: auto;
}

.mockup-droite {
    height: 100%;
    width: 55%;
    align-items: center;
    display: flex;
    justify-content: center;
}

.mockup-droite img {
    max-height: 100%;
    width: auto;
}

.explication-droite {
    height: 100%;
    width: 45%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    padding: 40px;
}

.explication-gauche {
    height: 100%;
    width: 45%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    padding: 40px;
}

.feature-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.feature-icon {
    font-size: 1.5em;
    line-height: 1;
    margin-bottom: 6px;
}

.feature-item h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.1em;
    font-weight: 500;
    color: #000;
    line-height: 1.2;
}

.feature-item p {
    font-family: 'Inter', sans-serif;
    font-size: 0.9em;
    font-weight: 300;
    color: #333;
    line-height: 1.4;
}

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

/* Fade in au chargement */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
}

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

/* Fade in + montée */
.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

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

/* Animation au scroll */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Animation slide depuis la gauche */
.scroll-reveal-left {
    opacity: 0;
    transform: translateX(-80px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Animation slide depuis la droite */
.scroll-reveal-right {
    opacity: 0;
    transform: translateX(80px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Délais pour effet cascade */
.scroll-reveal[data-delay="0.2"].revealed {
    transition-delay: 0.2s;
}

.scroll-reveal[data-delay="0.4"].revealed {
    transition-delay: 0.4s;
}

.scroll-reveal[data-delay="0.6"].revealed {
    transition-delay: 0.6s;
}

/* Animation pulse subtile pour attirer l'attention */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

.energy-status.revealed {
    animation: pulse 2s ease-in-out 1;
}

/* ============================= */
/* PLATE-EVOLUTION SECTION       */
/* ============================= */

.plate-evolution {
    padding: 50px 80px 80px 80px;
}

.plate-evolution h2 {
    color: #FF640A;
    font-size: 2.5em;
    font-weight: 700;
    line-height: 1.2;
}

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

.timeline {
    position: relative;
    margin-top: 200px;
    padding: 60px 0 50px 0;
    min-height: 900px;
}

.timeline-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: calc(100% + 110px);
    top: -60px;
    background: linear-gradient(to bottom, 
        rgba(46, 54, 136, 0.15) 0%, 
        rgba(46, 54, 136, 1) 40%, 
        rgba(46, 54, 136, 1) 60%,
        rgba(46, 54, 136, 0.15) 100%
    );
    opacity: 0;
    transition: opacity 1s ease;
}

.timeline-line.revealed {
    opacity: 1;
}

.timeline-item {
    position: relative;
    width: 50%;
}

.timeline-item.left {
    padding-right: 60px;
    text-align: left;
}

.timeline-item.right {
    margin-left: 50%;
    padding-left: 60px;
    text-align: left;
}

.timeline-item:nth-child(2) {
    margin-top: 0;
}

.timeline-item:nth-child(3) {
    margin-top: 120px;
}

.timeline-item:nth-child(4) {
    margin-top: 120px;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background-color: #2E3688;
    border-radius: 50%;
    top: 40px;
    z-index: 2;
    border: 5px solid #E0DED2;
    box-sizing: content-box;
}

.timeline-item.left .timeline-dot {
    right: -13px;
}

.timeline-item.right .timeline-dot {
    left: -13px;
}

.timeline-card {
    background: white;
    border: 2px solid;
    border-radius: 16px;
    padding: 28px 32px;
    font-family: 'Inter', sans-serif;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.timeline-card.orange-border {
    border-color: #FF640A;
}

.timeline-card.blue-border {
    border-color: #2E3688;
}

.timeline-card h3 {
    font-size: 2em;
    font-weight: 700;
    color: #FF640A;
    margin: 0;
    line-height: 1;
}

.timeline-divider {
    width: 100%;
    height: 1px;
    background-color: #E5E5E5;
    margin: 0;
}

.timeline-card h4 {
    font-size: 1.3em;
    font-weight: 600;
    color: #FF640A;
    margin: 0;
    line-height: 1.3;
}

.timeline-features {
    font-size: 1em;
    font-weight: 300;
    color: #555;
    line-height: 1.7;
    margin: 0;
}

.timeline-description {
    font-size: 0.95em;
    font-weight: 300;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.timeline-link {
    display: inline-flex;
    align-items: center;
    margin-top: auto;
    padding-top: 8px;
    font-size: 0.95em;
    font-weight: 500;
    color: #2E3688;
    text-decoration: none;
    transition: all 0.3s ease;
    align-self: flex-end;
}

.timeline-link:hover {
    color: #FF640A;
    transform: translateX(3px);
}

/* Animation pour les cards de timeline */
.scroll-reveal-timeline {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-timeline-right {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-timeline.revealed,
.scroll-reveal-timeline-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-timeline[data-delay="0.2"].revealed,
.scroll-reveal-timeline-right[data-delay="0.2"].revealed {
    transition-delay: 0.2s;
}

.scroll-reveal-timeline[data-delay="0.4"].revealed,
.scroll-reveal-timeline-right[data-delay="0.4"].revealed {
    transition-delay: 0.4s;
}

/* ============================= */
/* FAQ SECTION                   */
/* ============================= */

.faq {
    padding: 50px 80px 80px 80px;
}

.faq h2 {
    color: #FF640A;
    font-size: 2.5em;
    font-weight: 700;
    line-height: 1.2;
}

.faq-container {
    margin-top: 60px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    border-bottom: 1px solid #E5E5E5;
    margin-bottom: 0;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    padding-left: 10px;
}

.faq-question h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.15em;
    font-weight: 600;
    color: #2E3688;
    margin: 0;
    line-height: 1.4;
    flex: 1;
    padding-right: 20px;
}

.faq-icon {
    font-size: 1.8em;
    color: #FF640A;
    font-weight: 300;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    width: 30px;
    text-align: center;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 28px;
}

.faq-answer p {
    font-family: 'Inter', sans-serif;
    font-size: 1em;
    font-weight: 300;
    color: #555;
    line-height: 1.7;
    margin: 0;
    padding-right: 50px;
}

/* Animation pour délais FAQ */
.scroll-reveal[data-delay="0.1"].revealed {
    transition-delay: 0.1s;
}

.scroll-reveal[data-delay="0.3"].revealed {
    transition-delay: 0.3s;
}

.scroll-reveal[data-delay="0.5"].revealed {
    transition-delay: 0.5s;
}

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

footer {
    background-color: rgba(46, 54, 136, 0.15);
    padding: 60px 80px 40px 80px;
    margin-top: 10px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 80px;
    margin-bottom: 60px;
}

.footer-column h4 {
    font-family: 'Inter', sans-serif;
    font-size: 0.85em;
    font-weight: 500;
    color: #FF640A;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    font-family: 'Inter', sans-serif;
    font-size: 1em;
    font-weight: 400;
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease, transform 0.2s ease;
    display: inline-block;
}

.footer-column a:hover {
    color: #FF640A;
    transform: translateX(3px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid #E0E0E0;
}

.footer-logo {
    height: 24px;
}

.footer-bottom p {
    font-family: 'Inter', sans-serif;
    font-size: 0.9em;
    font-weight: 400;
    color: #666;
    margin: 0;
}

/* ============================= */
/* MODALE RÉPARTITION            */
/* ============================= */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(46, 54, 136, 0.3);
    backdrop-filter: blur(3px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    background-color: white;
    margin: 3% auto;
    padding: 0;
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(46, 54, 136, 0.12);
    animation: slideDown 0.4s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-header {
    padding: 40px 60px 35px 40px;
    border-bottom: 1px solid #E5E5E5;
    position: relative;
    background: white;
}

.close {
    position: absolute;
    right: 25px;
    top: 25px;
    font-size: 28px;
    font-weight: 300;
    color: #2E3688;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close:hover {
    color: #FF640A;
    transform: rotate(90deg);
}

.modal-content h2 {
    font-family: 'Syne', sans-serif;
    font-size: 1.6em;
    font-weight: 700;
    color: #FF640A;
    margin: 0;
    line-height: 1.3;
    padding-right: 40px;
}

.modal-body {
    padding: 0 40px 40px 40px;
    overflow-y: auto;
    flex: 1;
}

.modal-body::-webkit-scrollbar {
    width: 6px;
}

.modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.modal-body::-webkit-scrollbar-thumb {
    background: #FF640A;
    border-radius: 10px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: #2E3688;
}

.expense-list {
    display: flex;
    flex-direction: column;
}

.expense-item {
    padding: 35px 0;
    border-bottom: 1px solid #E5E5E5;
}

.expense-item:first-child {
    padding-top: 40px;
}

.expense-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.expense-item h3 {
    font-family: 'Syne', sans-serif;
    font-size: 1.25em;
    font-weight: 600;
    color: #FF640A;
    margin: 0 0 12px 0;
    line-height: 1.2;
}

.expense-stats {
    display: flex;
    gap: 10px;
    align-items: baseline;
    margin-bottom: 12px;
}

.percentage {
    font-family: 'Inter', sans-serif;
    font-size: 1.05em;
    font-weight: 600;
    color: #2E3688;
    line-height: 1;
}

.amount {
    font-family: 'Inter', sans-serif;
    font-size: 1.05em;
    font-weight: 600;
    color: #2E3688;
    line-height: 1;
}

.expense-item p {
    font-family: 'Inter', sans-serif;
    font-size: 0.95em;
    font-weight: 300;
    color: #333;
    line-height: 1.6;
    margin: 0;
}

.modal-note {
    margin-top: 35px;
    padding: 20px 24px;
    background-color: rgba(46, 54, 136, 0.03);
    border-left: 3px solid #FF640A;
    border-radius: 6px;
}

.modal-note p {
    font-family: 'Inter', sans-serif;
    font-size: 0.88em;
    font-weight: 400;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* ============================= */
/* PRÉ-INSCRIPTION               */
/* ============================= */

.preinscri {
    height: 400px;
    width: 90%;
    margin: auto;
    display: flex;
}

.preinscrit-left {
    height: 100%;
    width: 50%;
}

.preinscrit-text {
    font-family: 'Inter', sans-serif;
    font-style: italic;
    font-weight: 300;
    font-size: 0.95em;
    margin-left: 4%;
    margin-top: 14px;
    max-width: 85%;
    line-height: 1.6;
    color: #000;
}

.preinscrit-title {
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 1.4em;
    margin-left: 4%;
    color: #2E3688;
}

.preinscrit-btn {
    display: inline-block;
    margin-left: 4%;
    margin-top: 18px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9em;
    font-weight: 500;
    padding: 14px 30px;
    line-height: 1;
    border-radius: 999px;
    color: #FF640A;
    border: 1.4px solid #2E3688;
    background: transparent;
    text-decoration: none;
    transition: all 0.25s ease;
}

.preinscrit-btn:hover {
    background-color: #FF640A;
    color: #ffffff;
    border-color: #FF640A;
}

.preinscrit-right {
    height: 100%;
    width: 50%;
    display: flex;
    align-items: flex-start;
}

.preinscrit-right img {
    height: 110%;
    width: auto;
    margin-top: -90px;
}

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

@media (max-width: 768px) {
    /* Masquage des br dans les titres et paragraphes */
    h1 br,
    h2 br,
    h3 br,
    p br {
        display: none;
    }

    /* Navigation */
    nav {
        padding: 20px 30px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    /* Hero */
    .hero {
        padding: 60px 30px;
    }

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

    .hero-cta-btn {
        font-size: 0.95em;
        padding: 14px 32px;
    }

    .mockup {
        margin-top: 60px;
    }

    .mockup img {
        max-width: 70%;
    }

    /* Problem - Superposition et centrage */
    .problem {
        padding: 60px 30px;
    }

    .problem h2 {
        font-size: 2em;
    }

    .energy-status-container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .energy-status {
        width: 100%;
        max-width: 380px;
        margin: 30px auto 0 auto;
    }

    .energy-percent {
        font-size: 32px;
        margin-left: 0;
    }

    .energy-text {
        font-size: 15px;
    }

    .problem-result {
        margin-top: 50px;
        font-size: 1.4em;
    }

    .englobe-problem {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .somm-prob p {
        font-size: 4em;
        text-align: center;
    }

    .explication-prob p {
        font-size: 15px;
    }

    /* Solution - Mockup en haut, texte en bas */
    .solution {
        padding: 50px 30px;
    }

    .solution h2 {
        font-size: 2em;
    }

    .problementier {
        height: auto;
        flex-direction: column;
        margin-top: 40px;
    }

    .mockup-gauche {
        width: 100%;
        height: auto;
        margin-bottom: 40px;
    }

    .mockup-gauche img {
        max-width: 70%;
        max-height: 500px;
    }

    .explication-droite {
        width: 100%;
        padding: 0;
        gap: 25px;
    }

    .feature-item h3 {
        font-size: 1.05em;
    }

    .feature-item p {
        font-size: 0.88em;
    }

    /* Plate-evolution - Retrait frise, cartes empilées */
    .plate-evolution {
        padding: 50px 30px;
    }

    .plate-evolution h2 {
        font-size: 2em;
    }

    .timeline {
        margin-top: 60px;
        min-height: auto;
        padding: 0;
    }

    .timeline-line {
        display: none;
    }

    .timeline-item {
        width: 100%;
        padding: 0 !important;
        margin: 0 0 30px 0 !important;
        text-align: center;
    }

    .timeline-item.left,
    .timeline-item.right {
        margin-left: 0;
        padding-left: 0;
        padding-right: 0;
    }

    .timeline-dot {
        display: none;
    }

    .timeline-card {
        max-width: 100%;
        margin: 0 auto;
    }

    .timeline-card h3 {
        font-size: 1.8em;
    }

    .timeline-card h4 {
        font-size: 1.15em;
    }

    .timeline-features {
        font-size: 0.95em;
    }

    .timeline-link {
        align-self: center;
    }

    /* FAQ */
    .faq {
        padding: 50px 30px;
    }

    .faq h2 {
        font-size: 2em;
    }

    .faq-container {
        margin-top: 40px;
    }

    .faq-question h3 {
        font-size: 1.05em;
    }

    .faq-answer p {
        font-size: 0.95em;
        padding-right: 0;
    }

    /* Pré-inscription - Responsive */
    .preinscri {
        height: auto;
        width: 100%;
        padding: 0 30px 60px 30px;
        flex-direction: column;
    }

    /* 🔥 OISEAU DISPARAÎT */
    .preinscrit-right {
        display: none;
    }

    /* 🔥 CONTENEUR PREND TOUTE LA LARGEUR */
    .preinscrit-left {
        width: 100%;
        height: auto;
    }

    /* 🔥 TITRE ALIGNÉ À GAUCHE */
    .preinscrit-title {
        margin-left: 0;
        text-align: left;
        font-size: 1.25em;
        max-width: 100%;
    }

    /* 🔥 TEXTE ALIGNÉ À GAUCHE */
    .preinscrit-text {
        margin-left: 0;
        text-align: left;
        max-width: 100%;
        font-size: 0.9em;
        margin-top: 12px;
    }

    /* 🔥 BOUTON ALIGNÉ À GAUCHE ET PLEINE LARGEUR */
    .preinscrit-btn {
        margin-left: 0;
        margin-top: 20px;
        width: 100%;
        text-align: center;
        font-size: 0.88em;
        padding: 13px 28px;
    }

    /* Responsive modale */
    .modal-content {
        margin: 5% auto;
        width: 95%;
        max-height: 90vh;
    }

    .modal-header {
        padding: 30px 55px 25px 30px;
    }

    .modal-content h2 {
        font-size: 1.35em;
    }

    .close {
        right: 20px;
        top: 20px;
        font-size: 26px;
    }

    .modal-body {
        padding: 0 30px 35px 30px;
    }

    .expense-item {
        padding: 30px 0;
    }

    .expense-item:first-child {
        padding-top: 35px;
    }

    .expense-item h3 {
        font-size: 1.15em;
        margin-bottom: 10px;
    }

    .percentage,
    .amount {
        font-size: 0.98em;
    }

    .expense-item p {
        font-size: 0.9em;
    }

    .modal-note {
        margin-top: 30px;
        padding: 18px 20px;
    }

    .modal-note p {
        font-size: 0.85em;
    }

    /* Footer - Centrage et empilement */
    footer {
        padding: 50px 30px 30px 30px;
    }

    .footer-columns {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
        margin-bottom: 40px;
    }

    .footer-column {
        align-items: center;
    }

    .footer-column a:hover {
        transform: translateX(0);
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}