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

:root {
    --primary-blue: #2F4566;
    --secondary-blue: #536179;
    --accent: #8eabce;

    --background-light: #e8edf0;
    --white: #ffffff;

    --text-dark: #1f2933;
    --text-light: #64748b;

    --border-color: rgba(0, 0, 0, 0.06);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 17px;
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-large {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    transition: opacity 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #5d6b83;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-link:hover {
    opacity: 0.8;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 4px;
}

.logo img {
    height: 66px;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.02em;
    margin-left: -10px;
}

.btn-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 15px;

    background-color: #2F4566;
    border: 2px solid #2F4566;

    transition: 
        background-color 0.25s ease,
        color 0.25s ease,
        border-color 0.25s ease,
        transform 0.2s ease;
}

.btn-link:hover {
    background-color: transparent;
    color: #2F4566;
    border-color: #2F4566;
    transform: translateY(-1px);
}

.btn-link:active {
    transform: translateY(0);
}

/* Boutons */
.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent), var(--secondary-blue));
    color: var(--white);
    padding: 14px 28px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0, 102, 204, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: #ffffff;
    color: #2F4566;
    border-color: #2F4566;
    border-radius: 20px;
    border: 2px solid ;
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.btn-primary span {
    position: relative;
    z-index: 1;
}
.btn-primary:active {
    transform: translateY(0);
}


.btn-large {
    padding: 18px 40px;
    font-size: 19px;
}

/* Hero Section */
.hero {
    padding: 120px 0 82px;
    text-align: center;
    background: radial-gradient(ellipse at top, #f4f7fb, #ffffff);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(0, 102, 204, 0.08), transparent 50%);
    pointer-events: none;
}

.hero > .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    margin-bottom: 24px;
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-blue);
    background-color: rgba(30, 58, 138, 0.08);
    border-radius: 999px;
    letter-spacing: 0.04em;
    border: 1px solid rgba(30, 58, 138, 0.1);
}

.hero h1 {
    font-size: 72px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.05;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: 32px;
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 21px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

/* Social Proof Section */
.social-proof {
    padding: 60px 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
}

.social-proof-text {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 32px;
}

.logos-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
    align-items: center;
}

.logo-placeholder {
    text-align: center;
    padding: 24px;
    background-color: var(--background-light);
    border-radius: 12px;
    color: var(--text-light);
    font-weight: 600;
    font-size: 14px;
    border: 1px solid var(--border-color);
}

/* Section Problèmes */
/* Section Problèmes */
.problems {
    padding: 18px 0;
    background: linear-gradient(180deg, #ffffff 0%, var(--background-light) 100%);
}

.problems h2 {
    font-size: 56px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 70px;
    letter-spacing: -0.02em;
    color: var(--primary-blue);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.problem-card,
.problem-card-center {
    text-align: center;
    background: var(--white);
    padding: 40px 32px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
    position: relative;
}

.problem-card:nth-child(1) {
    grid-column: 1 / 3;
}

.problem-card:nth-child(2) {
    grid-column: 3 / 5;
}

.problem-card:nth-child(3) {
    grid-column: 5 / 7;
}

.problem-card-center {
    grid-column: 3 / 5;
}

.problem-card:hover,
.problem-card-center:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: rgba(0, 102, 204, 0.2);
}

.problem-icon {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
}

.problem-card p,
.problem-card-center p {
    font-size: 21px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.problem-detail {
    font-size: 16px;
    color: var(--text-light);
    font-weight: 400;
}

/* Cas d'usage */
.use-case {
    padding: 82px 0;
    position: relative;
}

.use-case:nth-child(odd) {
    background: linear-gradient(180deg, var(--background-light) 0%, #ffffff 100%);
}

.use-case:nth-child(even) {
    background: linear-gradient(180deg, #ffffff 0%, var(--background-light) 100%);
}

.use-case-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.use-case-reverse .use-case-content {
    direction: rtl;
}

.use-case-reverse .use-case-text {
    direction: ltr;
}

.use-case-reverse .use-case-visual {
    direction: ltr;
}

.use-case-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
    padding: 6px 12px;
    background-color: rgba(0, 102, 204, 0.08);
    border-radius: 6px;
}

.use-case h2 {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 32px;
    color: var(--primary-blue);
}

.use-case-block {
    margin-bottom: 32px;
}

.use-case h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.use-case-block p {
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-light);
}

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

.feature-list li {
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-light);
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
}

.feature-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 17px;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--accent), var(--secondary-blue));
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 102, 204, 0.3);
}

.results-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.result-tag {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.08), rgba(59, 130, 246, 0.08));
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-blue);
    border: 1px solid rgba(0, 102, 204, 0.15);
}

/* Séparateur de section */

/*.section-separator {
    padding: 100px 0;
    background: linear-gradient(180deg, 
        rgba(249, 250, 251, 0) 0%, 
        rgba(249, 250, 251, 0.5) 50%, 
        rgba(249, 250, 251, 0) 100%
    );
}

.separator-line {
    width: 100%;
    max-width: 600px;
    height: 1px;
    margin: 0 auto;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(78, 102, 146, 0.1) 25%, 
        rgba(78, 102, 146, 0.2) 50%, 
        rgba(78, 102, 146, 0.1) 75%, 
        transparent 100%
    );
}

*/
/* Visuels mockup */
.visual-box {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-content {
    width: 100%;
    max-width: 480px;
}

.mockup-mail,
.mockup-quote {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    border-radius: 24px;
    padding: 36px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    position: relative;
    overflow: hidden;
}

.mockup-mail::before,
.mockup-quote::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.15), transparent);
    pointer-events: none;
}

.mockup-header {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.25);
    transition: background-color 0.3s ease;
}

.mockup-dot:nth-child(1) {
    background-color: rgba(248, 113, 113, 0.8);
}

.mockup-dot:nth-child(2) {
    background-color: rgba(251, 191, 36, 0.8);
}

.mockup-dot:nth-child(3) {
    background-color: rgba(74, 222, 128, 0.8);
}

.mockup-body {
    text-align: center;
    color: var(--white);
    position: relative;
    z-index: 1;
}

.mail-icon,
.quote-icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.mockup-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.mockup-subtitle {
    font-size: 17px;
    opacity: 0.9;
    margin-bottom: 5px;
}

.mockup-detail {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 24px;
    text-align: left;
    margin-top: 24px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.detail-label {
    font-size: 14px;
    opacity: 0.8;
    font-weight: 500;
}

.detail-value {
    font-size: 15px;
    font-weight: 600;
}

.status-normal {
    padding: 4px 12px;
    background-color: rgba(74, 222, 128, 0.2);
    border-radius: 12px;
    font-size: 13px;
}

.quote-details {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 24px;
    text-align: left;
    margin-top: 24px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.quote-line {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    font-size: 15px;
}

.quote-line.total {
    font-weight: 700;
    font-size: 16px;
}

.quote-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 12px 0;
}

.quote-amount {
    font-size: 42px;
    font-weight: 700;
    margin: 24px 0 0px;
    letter-spacing: -0.02em;
    text-align: center;
    background: linear-gradient(135deg, #ffffff, rgba(255, 255, 255, 0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Pourquoi ShareFlow */
.why-shareflow {
    padding: 42px 0;
    background: linear-gradient(180deg, var(--background-light) 0%, #ffffff 100%);
}

.why-shareflow h2 {
    font-size: 56px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 70px;
    letter-spacing: -0.02em;
    color: var(--primary-blue);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.why-card {
    text-align: center;
    background: var(--white);
    padding: 48px 36px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.why-card:nth-child(1) {
    grid-column: 1 / 3;
}

.why-card:nth-child(2) {
    grid-column: 3 / 5;
}

.why-card:nth-child(3) {
    grid-column: 5 / 7;
}

.why-card-center {
    grid-column: 3 / 5;
}


.why-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.12);
}

.why-icon {
    font-size: 64px;
    margin-bottom: 24px;
    display: block;
}

.why-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.why-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-light);
}

/* FAQ Section */
/* FAQ */
.faq {
    padding: 100px 0;
    background-color: var(--white);
}

.faq h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 60px;
}

.faq-item {
    max-width: 800px;
    margin: 0 auto 16px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 16px;
    overflow: hidden;
    background-color: var(--white);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;

    font-size: 18px;
    font-weight: 550;
    color: var(--primary-blue);

    cursor: pointer;
}

.faq-icon {
    font-size: 22px;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.6;
}

/* État ouvert */
.faq-item.active .faq-answer {
    max-height: 200px;
}

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

/* Responsive */
@media (max-width: 734px) {
    .faq h2 {
        font-size: 32px;
    }

    .faq-question {
        font-size: 16px;
    }
}

/* CTA Final */
.cta-final {
    padding: 140px 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta-final::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.4;
}

.cta-final .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.cta-final h2 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    color: var(--white);
}

.cta-final p {
    font-size: 22px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.cta-final .btn-primary {
    background-color: var(--white);
    color: var(--primary-blue);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-final .btn-primary::before {
    background-color: rgba(255, 255, 255, 0.9);
}

.cta-final .btn-primary:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

/* Footer */
.footer {
    background-color: var(--primary-blue);
    padding: 70px 0 30px;
    color: rgba(255, 255, 255, 0.85);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.footer-tagline {
    font-size: 15px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.75);
    max-width: 320px;
}

.footer-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.footer-links,
.footer-contact,
.footer-legal {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.25s ease;
}

.footer a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive footer */
@media (max-width: 900px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 600px) {
    .footer-top {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links,
    .footer-contact,
    .footer-legal {
        align-items: center;
    }

    .footer-tagline {
        margin-left: auto;
        margin-right: auto;
    }
}

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

.use-case-text,
.use-case-visual {
    animation: fadeInUp 0.8s ease-out;
}

/* Responsive */
@media (max-width: 1200px) {
    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .problem-card:nth-child(1),
    .problem-card:nth-child(2),
    .problem-card:nth-child(3) {
        grid-column: auto;
    }

    .problem-card-center {
        grid-column: auto;
    }

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

    .why-card:nth-child(1),
    .why-card:nth-child(2),
    .why-card:nth-child(3) {
        grid-column: auto;
    }

    .why-card-center {
        grid-column: auto;
    }
}

@media (max-width: 1068px) {
    .use-case-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .use-case-reverse .use-case-content {
        direction: ltr;
    }

    .visual-content {
        max-width: 500px;
        margin: 0 auto;
    }

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

@media (max-width: 768px) {
    .logos-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .hero h1 {
        font-size: 48px;
    }

    .hero-tagline {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .problems h2,
    .why-shareflow h2,
    .cta-final h2,
    .faq h2 {
        font-size: 36px;
    }

    .use-case h2 {
        font-size: 32px;
        text-align: center;
    }

    .problems-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .why-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-right {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .hero {
        padding: 80px 0 100px;
    }

    .use-case {
        padding: 80px 0;
    }

    .problems,
    .why-shareflow,
    .faq {
        padding: 80px 0;
    }

    .cta-final {
        padding: 100px 0;
    }

    .cta-final h2 {
        font-size: 40px;
    }

    .cta-final p {
        font-size: 18px;
    }
}