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

body {
    font-family: Arial, sans-serif;
    background: #07111f;
    color: white;
    line-height: 1.6;
}

/* NAVBAR */

header {
    border-bottom: 1px solid #1d3048;
}

.navbar {
    max-width: 1150px;
    margin: auto;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: white;
    text-decoration: none;
}

.nav-links a:hover {
    color: #22d3ee;
}

/* HERO */

.hero {
    max-width: 1150px;
    margin: auto;
    padding: 90px 20px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.small-title {
    color: #22d3ee;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.hero h1 {
    font-size: 58px;
    line-height: 1.05;
    margin-bottom: 25px;
}

.hero h1 span {
    color: #22d3ee;
}

.description {
    color: #a9b8ca;
    max-width: 600px;
    font-size: 18px;
}

.buttons {
    margin-top: 35px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary,
.product-button {
    display: inline-block;
    padding: 14px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

.btn-primary {
    background: #22d3ee;
    color: #06101c;
}

.btn-primary:hover {
    background: white;
}

.btn-secondary {
    border: 1px solid #344a63;
    color: white;
}

.btn-secondary:hover {
    border-color: #22d3ee;
}

/* PRODUCT CARD */

.hero-card {
    background: #0d1b2d;
    border: 1px solid #203752;
    border-radius: 18px;
    padding: 35px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.card-top {
    color: #22d3ee;
    font-size: 13px;
    font-weight: bold;
    margin-bottom: 25px;
}

.hero-card h2 {
    font-size: 30px;
    margin-bottom: 10px;
}

.hero-card p {
    color: #9fb0c4;
}

.product-icon {
    font-size: 90px;
    text-align: center;
    padding: 30px;
}

.product-button {
    width: 100%;
    text-align: center;
    background: #12263d;
    color: white;
}

.product-button:hover {
    background: #22d3ee;
    color: #06101c;
}

/* PRODUCT SECTION */

.product-section {
    max-width: 1150px;
    margin: auto;
    padding: 80px 20px;
}

.product-section > h2 {
    font-size: 40px;
    margin-bottom: 40px;
}

.product-box {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 50px;
    background: #0b192a;
    border: 1px solid #1d3048;
    padding: 40px;
    border-radius: 18px;
}

.product-cover {
    min-height: 400px;
    border-radius: 12px;
    background: linear-gradient(145deg, #0e7490, #07111f);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.cover-content p {
    color: #a5f3fc;
    font-size: 13px;
    letter-spacing: 2px;
}

.cover-content h3 {
    font-size: 35px;
    margin: 20px 0;
}

.cover-content span {
    font-size: 13px;
    color: #a9b8ca;
}

.product-info h3 {
    font-size: 30px;
    margin-bottom: 20px;
}

.product-info p {
    color: #a9b8ca;
    margin-bottom: 25px;
}

.product-info ul {
    list-style: none;
    margin-bottom: 30px;
}

.product-info li {
    margin: 10px 0;
    color: #d7e2ee;
}

/* FEATURES */

.features {
    max-width: 1150px;
    margin: auto;
    padding: 60px 20px 100px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.feature {
    background: #0b192a;
    border: 1px solid #1d3048;
    padding: 30px;
    border-radius: 14px;
}

.feature div {
    font-size: 35px;
    margin-bottom: 15px;
}

.feature h3 {
    margin-bottom: 10px;
}

.feature p {
    color: #9fb0c4;
}

/* FOOTER */

footer {
    text-align: center;
    padding: 35px 20px;
    border-top: 1px solid #1d3048;
    color: #8293a8;
}

footer p {
    margin: 5px;
}

/* MOBILE */

@media (max-width: 800px) {

    .navbar {
        flex-direction: column;
        gap: 20px;
    }

    .hero {
        grid-template-columns: 1fr;
        padding-top: 60px;
    }

    .hero h1 {
        font-size: 42px;
    }

    .product-box {
        grid-template-columns: 1fr;
    }

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

    .product-section > h2 {
        font-size: 32px;
    }
}
.author-photo {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    display: block;
    margin: 0 auto 25px;
    border: 3px solid #22d3ee;
}
/* ================================
   PAGE PRODUIT
   ================================ */

.product-detail {
    padding: 80px 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-detail-cover {
    text-align: center;
}

.product-detail-cover .product-cover-image {
    width: 100%;
    max-width: 420px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 14px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.product-detail-info {
    max-width: 600px;
}

.product-label {
    color: #22d3ee;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.product-detail-info h1 {
    font-size: 42px;
    line-height: 1.15;
    margin-bottom: 15px;
}

.product-version {
    font-size: 20px;
    color: #94a3b8;
    margin-bottom: 10px;
}

.product-author {
    margin-bottom: 25px;
}

.product-detail-info h2 {
    font-size: 25px;
    margin-top: 35px;
    margin-bottom: 18px;
}

.product-detail-info ul {
    padding-left: 25px;
    line-height: 2;
    margin-bottom: 30px;
}

.product-price {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 25px;
    color: #22d3ee;
}

.product-detail-info .btn {
    display: inline-block;
    padding: 14px 28px;
    background: #22d3ee;
    color: #06111f;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 700;
    transition: 0.3s;
}

.product-detail-info .btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.product-note {
    margin-top: 18px;
    font-size: 14px;
    color: #94a3b8;
}

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

@media (max-width: 800px) {

    .product-detail {
        padding: 50px 20px;
    }

    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-detail-info h1 {
        font-size: 32px;
    }

    .product-detail-cover .product-cover-image {
        max-width: 340px;
    }
}
/* ================================
   BLOCS DE CONFIANCE DU PRODUIT
   ================================ */

.product-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 30px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: 12px;
}

.feature-item strong {
    font-size: 25px;
}

.feature-item span {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.feature-item b {
    font-size: 15px;
}

.feature-item small {
    color: #94a3b8;
    font-size: 13px;
}


/* MOBILE */

@media (max-width: 600px) {

    .product-features {
        grid-template-columns: 1fr;
    }

}
/* ================================
   PAGE COMMANDE
   ================================ */

.order-page {
    padding: 80px 20px;
}

.order-box {
    max-width: 900px;
    margin: 0 auto;
    padding: 45px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(34, 211, 238, 0.18);
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.order-box h1 {
    font-size: 38px;
    margin-bottom: 10px;
}

.order-version {
    color: #94a3b8;
    font-size: 18px;
    margin-bottom: 35px;
}

.order-summary {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 35px;
    align-items: center;
    margin-bottom: 45px;
}

.order-cover {
    width: 100%;
    border-radius: 12px;
    display: block;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.order-summary h2,
.payment-info h2 {
    font-size: 25px;
    margin-bottom: 15px;
}

.payment-info {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
}

.payment-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 25px;
}

.payment-option {
    padding: 18px;
    border: 1px solid rgba(34, 211, 238, 0.25);
    border-radius: 10px;
    background: rgba(34, 211, 238, 0.06);
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.payment-option:hover {
    border-color: #22d3ee;
}

.order-note {
    margin-top: 30px;
    color: #94a3b8;
    font-size: 14px;
}

.back-link {
    display: inline-block;
    margin-top: 25px;
    color: #22d3ee;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}


/* MOBILE */

@media (max-width: 700px) {

    .order-box {
        padding: 25px;
    }

    .order-box h1 {
        font-size: 30px;
    }

    .order-summary {
        grid-template-columns: 1fr;
    }

    .order-cover {
        max-width: 300px;
        margin: 0 auto;
    }

    .payment-options {
        grid-template-columns: 1fr;
    }
}