/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #050608;
    --bg-secondary: #0B0C10;
    --bg-card: #111318;
    --bg-card-hover: #1A1C22;
    --text-primary: #eeeef4;
    --text-secondary: #b0aec0;
    --text-muted: #706e82;

    /* Accente neutre */
    --accent: #7E7E88;
    --accent-glow: rgba(126, 126, 136, 0.18);
    --accent-secondary: #6A6A74;
    --accent-secondary-glow: rgba(106, 106, 116, 0.14);

    --border: #1E2028;
    --border-light: #282A34;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.25s ease;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 6, 8, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo-img {
    height: 52px;
    width: auto;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a.active::after {
    width: 100%;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 24px 80px;
    position: relative;
    background:
        radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 40%),
        radial-gradient(ellipse at 80% 80%, var(--accent-secondary-glow) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 100%, var(--accent-glow) 0%, transparent 40%),
        var(--bg-primary);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(126, 126, 136, 0.008) 2px,
            rgba(126, 126, 136, 0.008) 4px
        );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-logo {
    width: 480px;
    max-width: 90vw;
    height: auto;
    margin-bottom: 40px;
    filter: drop-shadow(0 0 40px rgba(126, 126, 136, 0.25));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-subtitle strong {
    color: var(--accent-secondary);
}

.btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(126, 126, 136, 0.25);
}

/* ===== SECTIONS ===== */
.section {
    padding: 100px 0;
}

.page-section {
    padding-top: 120px;
    min-height: calc(100vh - 100px);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-intro {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 60px;
    font-size: 1.05rem;
}

/* ===== ABOUT ===== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
}

.about-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 30px var(--accent-glow);
}

.about-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.about-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== APPS SECTION ===== */
.apps {
    background: var(--bg-secondary);
}

.app-detail {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    margin-top: 24px;
}

.app-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 24px;
}

.app-header-text {
    flex: 1;
}

.app-logo {
    width: 72px;
    height: auto;
    border-radius: var(--radius);
    flex-shrink: 0;
}

.app-badge {
    display: inline-block;
    padding: 4px 14px;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.app-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.app-type {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.app-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 36px;
}

.app-description strong {
    color: var(--text-primary);
}

/* Sub-sections */
.app-subsection {
    margin-bottom: 40px;
}

.app-subsection:last-child {
    margin-bottom: 0;
}

.app-subsection h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    padding: 6px 16px;
    background: rgba(126, 126, 136, 0.08);
    color: var(--accent);
    border: 1px solid rgba(126, 126, 136, 0.18);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

/* Module Grid */
.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.module-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all var(--transition);
}

.module-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--accent-glow);
}

.module-card h5 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.module-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.module-card code {
    background: rgba(126, 126, 136, 0.1);
    color: var(--accent);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Etape Timeline */
.etape-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 10px;
}

.etap-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.etap-item:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.etap-nr {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* Specs Grid */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 20px;
    background: var(--bg-secondary);
}

.spec-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.spec-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
    font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

/* ===== CONTACT ===== */
.contact {
    background: var(--bg-primary);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    color: var(--text-secondary);
    padding: 16px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.contact-item:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.contact-icon {
    font-size: 1.4rem;
}

/* ===== FOOTER ===== */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-logo {
        width: 300px;
        max-width: 80vw;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .app-detail {
        padding: 28px 20px;
    }

    .app-name {
        font-size: 1.5rem;
    }

    .app-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .app-logo {
        width: 56px;
    }

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

    .etape-timeline {
        grid-template-columns: 1fr;
    }

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

    .nav-links {
        gap: 16px;
    }

    .nav-links a {
        font-size: 0.85rem;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .nav-container {
        height: 56px;
    }

    .nav-logo-img {
        height: 38px;
    }

    .nav-links {
        gap: 12px;
    }
}