:root {
    --blue: #0055a4;
    --white: #ffffff;
    --red: #ef4135;
    --dark: #0b0d10;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Barlow Condensed", sans-serif;
    background: #000;
    overflow-x: hidden;
}
header {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    
}
header::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    
    z-index: 1;
}
header h1,
header p,
header a {
    z-index: 2;
    color: var(--white);
}
header h1 {
    font-size: 4rem;
    letter-spacing: 4px;
    margin-bottom: 1rem;
}
header p {
    font-size: 1.5rem;
    max-width: 700px;
    margin-bottom: 2rem;
}
#scrollTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #c00000;
    color: #fff;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px rgb(0 0 0 / 0.3);
    z-index: 99;
    transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
}
#scrollTopBtn:hover {
    background-color: #002060;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgb(0 0 0 / 0.4);
}
.arrow-icon {
    width: 24px;
    height: 24px;
}
.btn-primary {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    background: linear-gradient(to right, var(--blue), var(--red));
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s ease;
}
.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--white);
}
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 3rem;
    background: rgb(0 0 0 / 0.6);
    z-index: 10;
}
nav .logo {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    margin-left: -30px;
}
nav a {
    margin-left: 2rem;
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}
nav a:hover {
    color: var(--red);
}
section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: auto;
    text-align: center;
}
section h2 {
    font-size: 2.8rem;
    color: var(--white);
    margin-bottom: 2rem;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    background-color: #fff0;
    padding: 2rem;
    border-radius: 10px;
    color: #000;
}
.card {
    background-color: #fff0;
    padding: 2rem;
    border-radius: 12px;
    transition: 0.3s ease;
}
.card:hover {
    background: rgb(255 255 255 / 0.1);
    transform: translateY(-5px);
}
.card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 1rem;
}
.card h3 {
    margin-bottom: 1rem;
    color: var(--white);
}
footer {
    background: #000;
    text-align: center;
    padding: 2rem;
    color: #aaa;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
}
#video-presentation {
    padding: 6rem 2rem;
    text-align: center;
    background-color: #fff0;
    backdrop-filter: none;
    color: #000;
}
#video-presentation h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--white);
}
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0);
}
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.french-flag {
    display: flex;
    width: 100%;
    height: 2.5px;
    margin-top: 75px;
}
.french-flag .blue {
    background-color: blue;
    flex: 1;
}
.french-flag .white {
    background-color: #fff;
    flex: 1;
}
.french-flag .red {
    background-color: red;
    flex: 1;
}
.hero-content {
    position: relative;
    z-index: 5;
    color: #fff;
    
    opacity: 1;
    transition: opacity 1.5s ease-in-out;
    
    padding: 30px;
    border-radius: 10px;
}
.hidden {
    opacity: 0;
    pointer-events: none;
}
.social-section {
    padding: 20px 20px;
    background: none;
    text-align: center;
    font-family: "Barlow Condensed", sans-serif;
    border-top: 2px solid #000;
}
.social-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: cyan;
    text-shadow: 0 0 10px rgb(255 255 255 / 0.5);
}
.social-icons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}
.social-icons a img {
    width: 75px;
    height: 75px;
    object-fit: contain;
    border-radius: 50%;
    background: rgb(255 255 255 / 0.05);
    padding: 10px;
    transition: 0.3s ease;
    box-shadow: 0 0 15px rgb(255 255 255 / 0.2);
}
.social-icons a img:hover {
    transform: scale(1.2);
    box-shadow: 0 0 25px rgb(255 255 255 / 0.6);
}
.qr-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgb(0 0 0 / 0.8);
    justify-content: center;
    align-items: center;
    z-index: 999;
}
.qr-box {
    position: relative;
    padding: 20px;
    background: #0a0f2c;
    border: 2px solid cyan;
    border-radius: 20px;
    box-shadow: 0 0 20px cyan;
}
.close-qr {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #fff;
}
.invest-section {
    background: #fff;
    padding: 6rem 2rem;
    text-align: center;
    color: #fff;
    border-top: 1px solid rgb(255 255 255 / 0.1);
}
.invest-section h2 {
    font-size: 2.5rem;
    color: #000;
    margin-bottom: 1.5rem;
}
.invest-section p {
    max-width: 800px;
    margin: auto;
    font-size: 1.2rem;
    line-height: 1.6;
    color: #ccc;
    margin-bottom: 2rem;
}
.invest-section .btn-primary {
    padding: 1rem 2rem;
    border-radius: 30px;
    background: linear-gradient(to right, #0055a4, #ef4135);
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}
.invest-section .btn-primary:hover {
    background: #c00000;
    color: #000;
}
#investissement {
    padding: 6rem 2rem;
    text-align: center;
    background: none;
    color: #fff;
}
#investissement h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan);
}
#investissement p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem auto;
    line-height: 1.6;
}
.btn-primary {
    padding: 1rem 2rem;
    background: linear-gradient(to right, var(--blue), var(--red));
    color: #fff;
    border: none;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    transition: 0.3s ease;
    margin-top: 50px;
}
.btn-primary:hover {
    background: var(--cyan);
    color: #000;
}
.nav-menu {
    display: none;
    width: 100%;
}
.menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 10px 0;
    margin-top: 15px;
}
.menu a {
    color: var(--light);
    text-decoration: none;
    font-weight: 700;
    padding: 6px;
}
nav a {
    color: #fff;
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
}
nav a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #c00000;
    transition: width 0.3s ease;
}
.logo a::after {
    content: none;
}
nav a:hover::after {
    width: 100%;
}
.white-button-2 {
    background-color: none;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 14px 28px;
    font-size: 20px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}
.contact-section {
    max-width: 1200px;
    margin: 60px auto;
    padding: 40px 20px;
    background-color: #f9f9f9;
    border-radius: var(--radius);
    box-shadow: 0 0 10px rgb(0 0 0 / 0.1);
}
.section-title {
    font-size: 30px;
    text-align: center;
    color: #fff;
    margin-bottom: 40px;
    background-color: #002060;
}
.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}
.contact-info {
    flex: 1;
    min-width: 280px;
    color: var(--dark);
    font-size: 18px;
    line-height: 1.6;
}
.contact-info p {
    margin-bottom: 20px;
}
.contact-form {
    flex: 1;
    min-width: 320px;
}
.contact-box {
    display: flex;
    flex-direction: column;
    gap: 15px;
    background-color: #fff;
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: 0 0 12px rgb(0 0 0 / 0.05);
}
.contact-box input,
.contact-box textarea {
    padding: 12px 16px;
    border: 1px solid #ccc;
    border-radius: var(--radius);
    font-size: 16px;
    width: 100%;
    resize: vertical;
}
.contact-box button {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 16px;
    font-weight: 700;
    cursor: pointer;
    border-radius: var(--radius);
    transition: background 0.3s ease;
}
.contact-box button:hover {
    background-color: #a00000;
    color: #fff;
}
@media screen and (max-width: 768px) {
    header {
        height: auto;
        padding: 4rem 1rem;
        background-position: center;
    }
    header h1 {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }
    header p {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        padding: 0 1rem;
    }
    nav {
        flex-direction: column;
        padding: 1rem;
    }
    nav .logo {
        font-size: 2rem;
        margin: 0;
    }
    nav a {
        margin: 0.5rem 0;
        font-size: 1rem;
    }
    section {
        padding: 4rem 1rem;
    }
    section h2 {
        font-size: 2rem;
    }
    .grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }
    .card {
        padding: 1.5rem;
    }
    .card h3 {
        font-size: 1.2rem;
    }
    .video-container {
        padding-bottom: 56.25%;
        height: 0;
    }
    
    .hero-content {
        padding: 20px;
    }
    .social-icons a img {
        width: 50px;
        height: 50px;
    }
    .contact-wrapper {
        flex-direction: column;
    }
    .section-title {
        font-size: 1.5rem;
        padding: 1rem;
    }
    .contact-box input,
    .contact-box textarea {
        font-size: 14px;
        padding: 10px;
    }
    .contact-box button {
        font-size: 14px;
        padding: 10px;
    }
    .btn-primary {
        font-size: 1rem;
        padding: 0.8rem 1.5rem;
        margin-top: 2rem;
    }
    .invest-section h2,
    #investissement h2 {
        font-size: 2rem;
    }
    .invest-section p,
    #investissement p {
        font-size: 1rem;
    }
}