/* ==========================================================
   BETENG — couche de style moderne (chargée après style.css)
   ========================================================== */

:root {
    --bt-navy: #002d5b;
    --bt-navy-dark: #001b38;
    --bt-gold: #d08f33;
    --bt-gold-dark: #b47722;
    --bt-ink: #0f1f38;
    --bt-text: #51607a;
    --bt-soft: #f4f7fb;
    --bt-line: #e3e9f2;
    --bt-radius: 18px;
    --bt-shadow: 0 18px 45px rgba(0, 29, 61, 0.10);
    --bt-font: "Manrope", "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--bt-font);
    color: var(--bt-text);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--bt-font);
    color: var(--bt-ink);
    letter-spacing: -0.02em;
}

p {
    font-family: var(--bt-font);
    color: var(--bt-text);
    font-size: 16px;
    line-height: 1.75;
}

section[id] {
    scroll-margin-top: 90px;
}

/* ---------- Boutons ---------- */
.btn {
    font-family: var(--bt-font);
    border-radius: 999px;
    padding: 24px 34px;
    min-width: 0;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
    box-shadow: 0 10px 24px rgba(208, 143, 51, 0.30);
}

.btn::before {
    background: var(--bt-gold-dark);
    border-radius: 999px;
}

.btn:hover {
    color: #fff;
}

.bt-btn-ghost {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 999px;
    border: 1.5px solid rgba(255, 255, 255, 0.55);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.4;
    transition: background .25s ease, color .25s ease, border-color .25s ease;
}

.bt-btn-ghost:hover {
    background: #fff;
    border-color: #fff;
    color: var(--bt-navy);
}

/* ---------- En-tête ---------- */
.top-bg {
    background: var(--bt-navy-dark);
}

.header-top {
    padding: 9px 0;
}

.header-info-left ul,
.header-info-right ul {
    margin: 0;
}

.header-info-left ul li {
    display: inline-block;
    margin-right: 26px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 13px;
    font-weight: 500;
}

.header-info-left ul li i {
    color: var(--bt-gold);
    margin-right: 8px;
}

.header-info-right .header-social li {
    display: inline-block;
}

.header-info-right .header-social li a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 13px;
    padding-left: 16px;
    transition: color .2s ease;
}

.header-info-right .header-social li a:hover {
    color: var(--bt-gold);
}

/* ---------- Sélecteur de langue ---------- */
.header-info-right {
    display: flex;
    align-items: center;
}

.bt-lang {
    display: inline-flex;
    gap: 4px;
    margin: 0 0 0 18px;
    padding: 0;
    vertical-align: middle;
}

.bt-lang li {
    display: inline-block;
}

.bt-lang li a {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    transition: background .2s ease, color .2s ease;
}

.bt-lang li a:hover {
    color: var(--bt-gold);
}

.bt-lang li a.active {
    background: var(--bt-gold);
    color: #fff;
}

.header-bottom {
    background: #fff;
    border-bottom: 1px solid var(--bt-line);
}

.sticky-bar {
    background: rgba(255, 255, 255, 0.94);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 30px rgba(0, 29, 61, 0.08);
}

.bt-brand {
    display: inline-flex;
    flex-direction: column;
    line-height: 1.1;
    padding: 14px 0;
}

.bt-brand strong {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--bt-navy);
}

.bt-brand strong span {
    color: var(--bt-gold);
}

.bt-brand small {
    margin-top: 4px;
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #8090a8;
}

.main-menu ul li a,
.header-sticky.sticky-bar.sticky .main-menu ul > li > a {
    padding: 28px 18px;
    font-family: var(--bt-font);
    font-size: 15px;
    font-weight: 600;
    text-transform: none;
    color: var(--bt-ink);
}

.main-menu ul li a::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 20px;
    height: 2px;
    border-radius: 2px;
    background: var(--bt-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
}

.main-menu ul li:hover > a::after {
    transform: scaleX(1);
}

.header-btn {
    padding: 20px 30px;
    text-transform: none;
}

/* ---------- Éléments communs ---------- */
.bt-section {
    padding: 110px 0;
}

.bt-section--soft {
    background: var(--bt-soft);
}

.bt-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--bt-gold);
}

.bt-eyebrow::before {
    content: "";
    width: 28px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
}

.bt-title {
    margin-bottom: 20px;
    font-size: clamp(28px, 3.4vw, 42px);
    font-weight: 800;
    line-height: 1.15;
}

.bt-lead {
    font-size: 18px;
    line-height: 1.75;
    color: var(--bt-text);
}

.bt-head {
    max-width: 680px;
    margin: 0 auto 56px;
    text-align: center;
}

.bt-head .bt-eyebrow::after {
    content: "";
    width: 28px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
}

.bt-head p {
    margin-bottom: 0;
}

/* ---------- Hero ---------- */
.bt-hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 720px;
    padding: 110px 0;
    background:
        linear-gradient(100deg, rgba(0, 27, 56, 0.94) 0%, rgba(0, 45, 91, 0.78) 45%, rgba(0, 45, 91, 0.25) 100%),
        url(../img/0.jpg) center / cover no-repeat;
}

.bt-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 26px;
    padding: 8px 18px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.bt-hero__badge::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--bt-gold);
}

.bt-hero h1 {
    margin-bottom: 22px;
    color: #fff;
    font-size: clamp(38px, 5.6vw, 68px);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.bt-hero h1 span {
    display: block;
    color: var(--bt-gold);
}

.bt-hero__text {
    max-width: 560px;
    margin-bottom: 38px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 18px;
}

.bt-hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.bt-hero__points {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 34px;
    margin: 56px 0 0;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.bt-hero__points li {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
}

.bt-hero__points li i {
    margin-right: 9px;
    color: var(--bt-gold);
}

/* ---------- Présentation ---------- */
.bt-about__media {
    position: relative;
    padding: 0 26px 26px 0;
}

.bt-about__media::before {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    width: 62%;
    height: 62%;
    border-radius: var(--bt-radius);
    background: var(--bt-gold);
    opacity: 0.16;
}

.bt-about__media img {
    position: relative;
    width: 100%;
    height: 560px;
    object-fit: cover;
    border-radius: var(--bt-radius);
    box-shadow: var(--bt-shadow);
}

.bt-about__content {
    padding-left: 30px;
}

.bt-subtitle {
    margin: 34px 0 18px;
    font-size: 17px;
    font-weight: 700;
}

.bt-sectors {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 0;
}

.bt-sectors li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border: 1px solid var(--bt-line);
    border-radius: 12px;
    background: #fff;
    color: var(--bt-ink);
    font-size: 14.5px;
    font-weight: 600;
    line-height: 1.45;
    transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

.bt-sectors li:hover {
    border-color: var(--bt-gold);
    box-shadow: 0 10px 24px rgba(0, 29, 61, 0.08);
    transform: translateY(-2px);
}

.bt-sectors li i {
    flex: none;
    margin-top: 3px;
    color: var(--bt-gold);
    font-size: 14px;
}

/* ---------- Services ---------- */
.bt-card {
    height: 100%;
    padding: 40px 34px;
    border: 1px solid var(--bt-line);
    border-radius: var(--bt-radius);
    background: #fff;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.bt-card:hover {
    border-color: transparent;
    box-shadow: var(--bt-shadow);
    transform: translateY(-6px);
}

.bt-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    margin-bottom: 26px;
    border-radius: 16px;
    background: rgba(208, 143, 51, 0.12);
    color: var(--bt-gold);
    font-size: 30px;
    line-height: 1;
    transition: background .3s ease, color .3s ease;
}

.bt-card__icon span::before {
    margin: 0;
    font-size: 30px;
}

.bt-card:hover .bt-card__icon {
    background: var(--bt-navy);
    color: #fff;
}

.bt-card__num {
    float: right;
    color: #d5dde9;
    font-size: 34px;
    font-weight: 800;
    line-height: 1;
}

.bt-card h3 {
    margin-bottom: 12px;
    font-size: 21px;
    font-weight: 700;
    line-height: 1.3;
}

.bt-card p {
    margin-bottom: 0;
    font-size: 15.5px;
}

/* ---------- Projets ---------- */
.bt-project + .bt-project {
    margin-top: 90px;
}

.bt-project__media img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--bt-radius);
    box-shadow: var(--bt-shadow);
}

.bt-project__media--duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.bt-project__media--duo img:last-child {
    margin-top: 44px;
}

.bt-project__body {
    padding: 0 20px;
}

.bt-tag {
    display: inline-block;
    margin-bottom: 16px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(0, 45, 91, 0.08);
    color: var(--bt-navy);
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.bt-project__body h3 {
    margin-bottom: 14px;
    font-size: clamp(24px, 2.6vw, 32px);
    font-weight: 800;
    line-height: 1.2;
}

.bt-checklist {
    margin: 22px 0 0;
}

.bt-checklist li {
    position: relative;
    margin-bottom: 12px;
    padding-left: 34px;
    color: var(--bt-ink);
    font-size: 16px;
    font-weight: 600;
}

.bt-checklist li::before {
    content: "\f00c";
    position: absolute;
    left: 0;
    top: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--bt-gold);
    color: #fff;
    font-family: "Font Awesome 5 Free";
    font-size: 10px;
    font-weight: 900;
}

/* ---------- Galerie ---------- */
.bt-gallery {
    overflow: hidden;
}

.bt-gallery .single-cases-img {
    position: relative;
    overflow: hidden;
    border-radius: var(--bt-radius);
}

.bt-gallery .owl-carousel .owl-item img {
    display: block;
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: transform .6s ease;
}

.bt-gallery .single-cases-img:hover img {
    transform: scale(1.06);
}

.bt-gallery .single-cases-cap {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 70px 24px 22px;
    background: linear-gradient(180deg, rgba(0, 27, 56, 0) 0%, rgba(0, 27, 56, 0.9) 75%);
}

.bt-gallery .single-cases-cap h4 {
    margin-bottom: 6px;
    color: #fff;
    font-size: 19px;
    font-weight: 700;
}

.bt-gallery .single-cases-cap p {
    margin: 0;
    color: rgba(255, 255, 255, 0.85);
    font-size: 14.5px;
    line-height: 1.55;
}

/* ---------- Contact ---------- */
.request-back-area {
    padding: 100px 0;
    background:
        radial-gradient(circle at 85% 15%, rgba(208, 143, 51, 0.22), transparent 45%),
        linear-gradient(135deg, var(--bt-navy-dark), var(--bt-navy));
}

.request-back-area .request-content h3 {
    font-size: clamp(28px, 3.2vw, 40px);
    font-weight: 800;
    margin-bottom: 18px;
}

.request-back-area .request-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 17px;
}

.request-back-area .bt-eyebrow {
    color: var(--bt-gold);
}

.bt-contact-list {
    margin: 26px 0 0;
}

.bt-contact-list li {
    margin-bottom: 10px;
}

.bt-contact-list li a {
    color: #fff;
    font-weight: 600;
    transition: color .2s ease;
}

.bt-contact-list li a:hover {
    color: var(--bt-gold);
}

.bt-contact-list li i {
    width: 22px;
    margin-right: 8px;
    color: var(--bt-gold);
}

.form-wrapper {
    padding: 36px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--bt-radius);
    background: rgba(255, 255, 255, 0.06);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.form-wrapper .form-box input,
.form-wrapper .nice-select {
    height: 56px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-family: var(--bt-font);
    font-size: 15px;
    transition: border-color .2s ease, background .2s ease;
}

.form-wrapper .nice-select {
    line-height: 32px;
}

.form-wrapper .form-box input::placeholder {
    color: rgba(255, 255, 255, 0.65);
}

.form-wrapper .form-box input:focus,
.form-wrapper .nice-select.open,
.form-wrapper .nice-select:focus {
    border-color: var(--bt-gold);
    background: rgba(255, 255, 255, 0.10);
    outline: 0;
}

.form-wrapper .nice-select::after {
    border-color: rgba(255, 255, 255, 0.7);
}

.form-wrapper .nice-select .list,
.form-wrapper .nice-select.open .list {
    border-radius: 12px;
    overflow: hidden;
}

.form-wrapper .nice-select .option {
    color: var(--bt-ink);
}

.send-btn {
    height: 56px;
    border-radius: 12px;
    font-family: var(--bt-font);
    font-size: 15px;
    font-weight: 700;
}

.send-btn::before {
    background: var(--bt-gold-dark);
}

/* ---------- Pied de page ---------- */
.bt-footer {
    padding: 70px 0 0;
    background: var(--bt-navy-dark);
}

.bt-footer .bt-brand strong {
    color: #fff;
}

.bt-footer .bt-brand small {
    color: rgba(255, 255, 255, 0.55);
}

.bt-footer p {
    max-width: 340px;
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.65);
    font-size: 15px;
}

.bt-footer h4 {
    margin-bottom: 22px;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.bt-footer ul {
    margin: 0;
}

.bt-footer ul li {
    margin-bottom: 12px;
}

.bt-footer ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    transition: color .2s ease;
}

.bt-footer ul li a:hover {
    color: var(--bt-gold);
}

.bt-footer ul li i {
    width: 20px;
    margin-right: 8px;
    color: var(--bt-gold);
    font-size: 13px;
}

.bt-footer__bottom {
    margin-top: 50px;
    padding: 22px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.10);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    text-align: center;
}

#scrollUp {
    border-radius: 50%;
    background: var(--bt-gold);
}

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
    .bt-section {
        padding: 80px 0;
    }

    .bt-hero {
        min-height: 600px;
        padding: 90px 0;
    }

    .bt-about__media {
        margin-bottom: 44px;
    }

    .bt-about__media img {
        height: 440px;
    }

    .bt-about__content,
    .bt-project__body {
        padding: 0;
    }

    .bt-project__media {
        margin-bottom: 34px;
    }

    .bt-project + .bt-project {
        margin-top: 64px;
    }

    .bt-card {
        height: auto;
        margin-bottom: 24px;
    }

    .request-content {
        margin-bottom: 36px;
    }

    .bt-footer .col-md-6 {
        margin-bottom: 36px;
    }
}

@media (max-width: 575px) {
    .bt-section {
        padding: 64px 0;
    }

    .bt-hero {
        min-height: 0;
        padding: 80px 0;
    }

    .bt-hero__text,
    .bt-lead {
        font-size: 16.5px;
    }

    .bt-sectors {
        grid-template-columns: 1fr;
    }

    .bt-about__media img {
        height: 340px;
    }

    .bt-project__media img {
        height: 260px;
    }

    .bt-project__media--duo img:last-child {
        margin-top: 24px;
    }

    .bt-gallery .owl-carousel .owl-item img {
        height: 300px;
    }

    .form-wrapper {
        padding: 22px;
    }

    .bt-brand strong {
        font-size: 21px;
    }
}