/* VARIABLES & BASE */


:root {
    --noir: #0A0A0F;
    --or: #C9A96E;
    --or-clair: #E8D5B0;
    --blanc: #FFFFFF;
    --texte-muted: rgba(255,255,255,0.45);
}

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

body {
    background-color: var(--noir);
    color: var(--blanc);
    font-family: 'DM Sans', sans-serif;
    overflow-x: hidden;
}


/* NAVIGATION */


nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 48px;
    z-index: 100;
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(12px);
}

.nav-logo {
    font-size: 24px;
    font-weight: 500;
    color: var(--blanc);
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 13px;
    color: var(--texte-muted);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--or);
}

.nav-cta {
    font-size: 13px;
    color: var(--or);
    border: 0.5px solid rgba(201,169,110,0.45);
    padding: 8px 20px;
    border-radius: 100px;
    text-decoration: none;
    transition: all 0.2s;
}

.nav-cta:hover {
    background: rgba(201,169,110,0.1);
}

.logo-svg {
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
    flex-shrink: 0;
}

.nav-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

.nav-links.open {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 16px;
    padding: 16px 0;
}


/* HERO */


#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 5;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}

.hero-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--or);
    border: 0.5px solid rgba(201,169,110,0.4);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 32px;
}

#hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(42px, 6vw, 72px);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gold {
    color: var(--or);
}

.hero-sub {
    font-size: 17px;
    color: var(--texte-muted);
    line-height: 1.7;
    max-width: 580px;
    margin: 0 auto 48px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.btn-primary {
    background: var(--or);
    color: var(--noir);
    font-size: 14px;
    font-weight: 500;
    padding: 14px 32px;
    border-radius: 100px;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--or-clair);
    transform: translateY(-2px);
}

.btn-secondary {
    color: var(--texte-muted);
    font-size: 14px;
    padding: 14px 32px;
    border-radius: 100px;
    text-decoration: none;
    border: 0.5px solid rgba(255,255,255,0.12);
    transition: all 0.2s;
}

.btn-secondary:hover {
    border-color: rgba(255,255,255,0.3);
    color: var(--blanc);
}

/* SECTIONS COMMUNES */

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 120px 48px;
}

.section-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--or);
    border: 0.5px solid rgba(201,169,110,0.4);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 24px;
}

#services h2,
#contact h2,
#apropos h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 16px;
    color: var(--texte-muted);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: 64px;
    font-weight: 300;
}


/* SERVICES GRID */

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    overflow: hidden;
}

.service-card {
    background: var(--noir);
    padding: 40px 32px;
    position: relative;
    transition: background 0.2s;
}

.service-card:hover {
    background: rgba(201,169,110,0.04);
}

.service-card.featured {
    background: rgba(201,169,110,0.06);
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--or);
    border: 0.5px solid rgba(201,169,110,0.5);
    padding: 4px 10px;
    border-radius: 100px;
}

.service-icon {
    font-size: 24px;
    margin-bottom: 20px;
    filter: grayscale(0.3);
}

.service-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--blanc);
}

.service-card p {
    font-size: 14px;
    color: var(--texte-muted);
    line-height: 1.65;
    margin-bottom: 24px;
    font-weight: 300;
}

.service-price {
    font-size: 12px;
    color: var(--or);
    letter-spacing: 0.04em;
}


/* ROI */

#roi {
    border-top: 1px solid rgba(255,255,255,0.06);
}

#roi h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.roi-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 16px;
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: border-color 0.2s, background 0.2s;
}

.roi-card:hover {
    background: rgba(201,169,110,0.04);
    border-color: rgba(201,169,110,0.2);
}

.roi-card-featured {
    border-color: rgba(201,169,110,0.25);
    background: rgba(201,169,110,0.05);
}

.roi-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.roi-chiffre {
    font-family: 'Playfair Display', serif;
    font-size: 52px;
    font-weight: 500;
    color: var(--or);
    line-height: 1;
    letter-spacing: -0.02em;
}

.roi-chiffre span {
    font-size: 22px;
    color: var(--or);
    opacity: 0.7;
}

.roi-titre {
    font-size: 15px;
    font-weight: 500;
    color: var(--blanc);
    margin-bottom: 4px;
}

.roi-desc {
    font-size: 14px;
    color: var(--texte-muted);
    line-height: 1.65;
    font-weight: 300;
    margin-bottom: 0;
}

.roi-source {
    font-size: 11px;
    color: rgba(255,255,255,0.2);
    margin-top: 8px;
    letter-spacing: 0.04em;
}

.roi-bridge {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding: 40px 48px;
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 16px;
    background: rgba(255,255,255,0.02);
}

.roi-bridge p {
    font-family: 'Playfair Display', serif;
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255,255,255,0.6);
    font-style: italic;
    line-height: 1.5;
    max-width: 600px;
}


/* CAS D'USAGE */

#cas {
    border-top: 1px solid rgba(255,255,255,0.06);
}

#cas h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.cas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 64px;
}

.cas-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 16px;
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    transition: border-color 0.2s, background 0.2s;
}

.cas-card:hover {
    border-color: rgba(201,169,110,0.2);
    background: rgba(201,169,110,0.03);
}

.cas-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.cas-secteur {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cas-emoji {
    font-size: 28px;
    flex-shrink: 0;
}

.cas-type {
    font-size: 14px;
    font-weight: 500;
    color: var(--blanc);
}

.cas-lieu {
    font-size: 12px;
    color: var(--texte-muted);
    margin-top: 2px;
}

.cas-badge {
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--or);
    border: 0.5px solid rgba(201,169,110,0.4);
    padding: 4px 10px;
    border-radius: 100px;
    white-space: nowrap;
    flex-shrink: 0;
}

.cas-label {
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--or);
    opacity: 0.6;
    margin-bottom: 8px;
}

.cas-probleme p:last-child,
.cas-solution p:last-child {
    font-size: 13px;
    color: var(--texte-muted);
    line-height: 1.7;
    font-weight: 300;
}

.cas-resultats {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: auto;
}

.cas-stat {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.cas-chiffre {
    font-family: 'Playfair Display', serif;
    font-size: 22px;
    font-weight: 500;
    color: var(--or);
    min-width: 56px;
    line-height: 1;
}

.cas-desc {
    font-size: 13px;
    color: var(--texte-muted);
    font-weight: 300;
}

.cas-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding: 40px 48px;
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 16px;
    background: rgba(255,255,255,0.02);
}

.cas-cta p {
    font-size: 15px;
    color: var(--texte-muted);
    line-height: 1.65;
    font-weight: 300;
    max-width: 560px;
}


/* À PROPOS */

#apropos {
    border-top: 1px solid rgba(255,255,255,0.06);
}

#apropos h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 48px;
    line-height: 1.15;
}

.apropos-inner {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 80px;
    align-items: start;
}

.apropos-left {
    position: sticky;
    top: 120px;
}

.signature-avatar {
    width: 44px;
    height: 44px;
    border-radius: 100px;
    background: rgba(201,169,110,0.15);
    border: 1px solid rgba(201,169,110,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--or);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.apropos-signature {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
}

.signature-nom {
    font-size: 14px;
    font-weight: 500;
    color: var(--blanc);
}

.signature-titre {
    font-size: 12px;
    color: var(--texte-muted);
    margin-top: 2px;
}

.apropos-right {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.apropos-bloc {
    display: flex;
    gap: 28px;
    padding: 36px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.apropos-bloc:first-child {
    padding-top: 0;
}

.apropos-bloc:last-child {
    border-bottom: none;
}

.apropos-numero {
    font-family: 'Playfair Display', serif;
    font-size: 13px;
    color: var(--or);
    opacity: 0.5;
    flex-shrink: 0;
    padding-top: 4px;
    letter-spacing: 0.08em;
}

.apropos-bloc h4 {
    font-size: 15px;
    font-weight: 500;
    color: var(--blanc);
    margin-bottom: 10px;
    letter-spacing: 0.01em;
}

.apropos-bloc p {
    font-size: 14px;
    color: var(--texte-muted);
    line-height: 1.75;
    font-weight: 300;
}


/* CONTACTEZ-NOUS */

#contact {
    border-top: 1px solid rgba(255,255,255,0.06);
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-text h2 {
    margin-bottom: 24px;
}

.contact-infos {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 40px;
}

.contact-line {
    font-size: 14px;
    color: var(--or);
    text-decoration: none;
    transition: opacity 0.2s;
}

.contact-line:hover {
    opacity: 0.7;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--texte-muted);
}

.form-group input,
.form-group textarea {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 14px 16px;
    color: var(--blanc);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: rgba(201,169,110,0.4);
}

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


/* FORMULAIRE MULTI-ÉTAPES */

.form-progress {
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.08);
    border-radius: 100px;
    margin-bottom: 32px;
    overflow: hidden;
}

.form-progress-bar {
    height: 100%;
    background: var(--or);
    border-radius: 100px;
    transition: width 0.4s ease;
    width: 20%;
}

.form-step {
    display: none;
    flex-direction: column;
    gap: 20px;
}

.form-step.active {
    display: flex;
}

.form-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 8px;
}

.btn-retour {
    background: none;
    border: none;
    color: var(--texte-muted);
    font-size: 13px;
    cursor: pointer;
    padding: 0;
    font-family: 'DM Sans', sans-serif;
    transition: color 0.2s;
}

.btn-retour:hover {
    color: var(--blanc);
}

.form-choices {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-choice {
    padding: 14px 18px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    font-size: 14px;
    color: var(--texte-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.form-choice:hover {
    border-color: rgba(201,169,110,0.4);
    color: var(--blanc);
}

.form-choice.selected {
    border-color: var(--or);
    color: var(--or);
    background: rgba(201,169,110,0.06);
}


/* FOOTER */

#footer {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 48px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.footer-logo {
    font-size: 18px;
    font-weight: 500;
    color: var(--blanc);
}

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

.footer-tagline {
    font-size: 13px;
    color: var(--texte-muted);
    font-weight: 300;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 13px;
    color: var(--texte-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-copy {
    font-size: 12px;
    color: rgba(255,255,255,0.2);
    margin-top: 8px;
    width: 100%;
    text-align: center;
    display: block;
}

/* SCROLL ANIMATIONS */

.fade-up {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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



/* RESPONSIVE MOBILE */
.nav-hamburger {
    display: none;
}

@media (max-width: 768px) {

    /* NAV */
    nav {
        padding: 16px 20px;
        flex-wrap: wrap;
        gap: 12px;
    }

    .nav-links {
        display: none;
    }

    .nav-cta {
        font-size: 12px;
        padding: 8px 16px;
    }

    .nav-logo {
        font-size: 18px;
    }

    .logo-svg {
        width: 36px;
        height: 36px;
    }

    /* HERO */
    .hero-content {
        padding: 0 20px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .btn-primary,
    .btn-secondary {
        text-align: center;
    }

    /* SECTIONS */
    .section-inner {
        padding: 64px 20px;
    }

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

    /* ROI */
    .roi-grid {
        grid-template-columns: 1fr;
    }

    .roi-bridge {
        flex-direction: column;
        padding: 28px 24px;
        gap: 24px;
        text-align: center;
    }

    /* CAS D'USAGE */
    .cas-grid {
        grid-template-columns: 1fr;
    }

    .cas-cta {
        flex-direction: column;
        padding: 28px 24px;
        gap: 24px;
        text-align: center;
    }

    /* À PROPOS */
    .apropos-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .apropos-left {
        position: static;
    }

    /* CONTACT */
    .contact-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }



    /* FOOTER */
    #footer {
        padding: 40px 20px;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    .nav-hamburger {
    
        display: flex;
    }
    .nav-links.open {
    display: flex;
    flex-direction: column;
    width: 100%;
    order: 3;
    gap: 16px;
    padding: 16px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    }
}