:root {
    --bg: #f8fafc;
    --surface: rgba(255, 255, 255, 0.85);
    --text: #1e293b;
    --sub: #64748b;
    --border: rgba(100, 116, 139, 0.12);
    --accent: #4f46e5;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --bezier: cubic-bezier(0.16, 1, 0.3, 1);
}

html.dark {
    --bg: #050507;
    --surface: rgba(15, 15, 20, 0.8);
    --text: #f1f5f9;
    --sub: #94a3b8;
    --border: rgba(255, 255, 255, 0.06);
    --accent: #818cf8;
    --card-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

html { 
    scrollbar-gutter: stable; 
    height: 100%;
}

* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    font-family: 'Comfortaa', cursive; 
}

body { 
    background: var(--bg); 
    color: var(--text); 
    line-height: 1.6; 
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.4s ease;
}

body::before {
    content: ""; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0.03; z-index: -1; pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

nav { 
    position: fixed; top: 25px; left: 50%; transform: translateX(-50%);
    z-index: 1001; background: var(--surface);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: 20px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 24px; box-shadow: var(--card-shadow);
    width: auto; max-width: 1400px;
}

.nav-left { display: flex; align-items: center; }

.nav-logo { 
    font-weight: 700; font-size: 15px; color: var(--text); 
    text-decoration: none; letter-spacing: 2px; margin-right: 15px; 
}

.nav-sections { 
    display: flex; gap: 4px; 
    border-left: 1px solid var(--border); 
    padding-left: 12px;
}

.nav-section {
    display: flex; align-items: center; justify-content: center;
    padding: 8px 16px; border-radius: 12px;
    border: 1px solid transparent; background: transparent;
    color: var(--sub); cursor: pointer;
    font-family: 'Comfortaa', cursive; font-size: 11px;
    font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.5px; transition: all 0.25s var(--bezier);
}

.nav-section:hover { color: var(--text); background: var(--border); }
.nav-section.active { 
    color: var(--accent); background: rgba(79, 70, 229, 0.08); 
    border-color: rgba(79, 70, 229, 0.15); 
}

.nav-controls { 
    display: flex; align-items: center; gap: 15px; 
    border-left: 1px solid var(--border);
    margin-left: 15px; padding-left: 15px;
}

/* --- SELECTEUR DE LANGUE PERSONNALISÉ --- */
.custom-lang-selector {
    position: relative;
    user-select: none;
}

.lang-selected {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 12px;
    transition: background 0.3s var(--bezier);
}

.lang-selected:hover { background: var(--border); }

.lang-selected img, .lang-option img {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.lang-selected span, .lang-option span {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
}

.chevron {
    width: 14px;
    height: 14px;
    color: var(--sub);
    transition: transform 0.3s var(--bezier);
    display: block;
}

.custom-lang-selector.open .chevron { transform: rotate(180deg); }

.lang-dropdown {
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 8px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(25px);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: all 0.3s var(--bezier);
    z-index: 2000;
}

.custom-lang-selector.open .lang-dropdown {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.lang-option:hover { background: var(--accent); }
.lang-option:hover span { color: #fff; }

html.dark .lang-dropdown { background: rgba(13, 13, 16, 0.9); }

/* --- THEME TOGGLE --- */
.theme-toggle { 
    cursor: pointer; position: relative;
    width: 20px; height: 20px;
    display: flex; align-items: center; justify-content: center;
    transition: transform 0.6s var(--bezier);
}

.theme-toggle svg {
    position: absolute;
    width: 100%; height: 100%;
    color: var(--text);
    transition: opacity 0.4s var(--bezier), transform 0.5s var(--bezier);
    fill: none;
}

.icon-sun { opacity: 0; transform: scale(0.3) rotate(-90deg); }
.icon-moon { opacity: 1; transform: scale(1) rotate(0deg); }

html.dark .icon-sun { opacity: 1; transform: scale(1) rotate(0deg); }
html.dark .icon-moon { opacity: 0; transform: scale(0.3) rotate(90deg); }

.theme-toggle:hover { transform: scale(1.15); }

/* --- BURGER BTN --- */
.burger-btn {
    display: none;
    width: 22px; height: 16px;
    position: relative; cursor: pointer;
    z-index: 1002; margin-left: 10px;
}

.burger-btn span {
    display: block; position: absolute;
    height: 2px; width: 100%;
    background: var(--text); border-radius: 2px;
    transition: .25s ease-in-out;
}
.burger-btn span:nth-child(1) { top: 0px; }
.burger-btn span:nth-child(2) { top: 7px; }
.burger-btn span:nth-child(3) { top: 14px; }

.burger-btn.open span:nth-child(1) { top: 7px; transform: rotate(135deg); }
.burger-btn.open span:nth-child(2) { opacity: 0; left: -40px; }
.burger-btn.open span:nth-child(3) { top: 7px; transform: rotate(-135deg); }

/* --- MENU MOBILE --- */
.nav-sections-mobile {
    display: none; flex-direction: column;
    position: absolute; top: calc(100% + 12px); left: 0; width: 100%;
    background: var(--bg); 
    border: 1px solid var(--border); border-radius: 20px;
    padding: 12px; gap: 4px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
    opacity: 0; transform: translateY(-10px); pointer-events: none;
    transition: all 0.3s var(--bezier);
}

html.dark .nav-sections-mobile { background: #0d0d10; }

.nav-sections-mobile.open {
    display: flex; opacity: 1; transform: translateY(0); pointer-events: auto;
}

.nav-section-mob {
    width: 100%; text-align: left;
    padding: 14px 20px; border-radius: 12px;
    border: none; background: transparent;
    color: var(--sub); cursor: pointer;
    font-family: 'Comfortaa', cursive; font-size: 13px;
    font-weight: 700; text-transform: uppercase;
}
.nav-section-mob.active { color: var(--accent); background: rgba(79, 70, 229, 0.08); }

/* --- CONTENU & STICKY FOOTER --- */
.page { 
    display: none; 
    padding: 140px 40px 40px; 
    max-width: 1400px; 
    margin: 0 auto;
    flex: 1; 
    width: 100%;
}

.page.active { 
    display: flex; 
    flex-direction: column;
    animation: fadeInUp 0.7s var(--bezier) forwards; 
}

@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

header { margin-bottom: 60px; border-left: 4px solid var(--accent); padding-left: 25px; }
header h1 { font-size: 32px; font-weight: 700; letter-spacing: -0.5px; }

.grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); 
    gap: 30px; 
    width: 100%;
}

.card { 
    background: var(--surface); border: 1px solid var(--border); 
    padding: 40px; border-radius: 32px;
    backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--card-shadow); transition: all 0.5s var(--bezier);
    display: flex; flex-direction: column; position: relative;
    opacity: 0; transform: translateY(30px);
    will-change: transform;
}
.card.visible { opacity: 1; transform: translateY(0); }
.card:hover { transform: translateY(-8px); border-color: var(--accent); box-shadow: 0 20px 40px rgba(0,0,0,0.06); }

.status-badge {
    align-self: flex-start; padding: 6px 14px; border-radius: 12px;
    font-size: 10px; font-weight: 700; text-transform: uppercase;
    margin-bottom: 25px; border: 1px solid var(--border);
    background: rgba(100, 116, 139, 0.05); color: var(--sub);
}
.status-badge.dev { color: #d97706; background: rgba(217, 119, 6, 0.08); border-color: rgba(217, 119, 6, 0.2); }

.app-header { display: flex; gap: 25px; margin-bottom: 25px; align-items: center; }
.app-icon { width: 68px; height: 68px; border-radius: 20px; object-fit: cover; border: 1px solid var(--border); background: #fff; }
.app-title h3 { font-size: 22px; font-weight: 700; color: var(--text); }
.app-title span { font-size: 12px; color: var(--sub); font-weight: 500; }

.desc { font-size: 15px; color: var(--sub); line-height: 1.7; margin-bottom: 25px; flex-grow: 1; }

.tags { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.tag { font-size: 11px; padding: 6px 14px; border-radius: 10px; background: rgba(100, 116, 139, 0.08); color: var(--text); font-weight: 700; }
.tag-cat { 
    font-size: 11px; padding: 6px 14px; border-radius: 10px; 
    background: rgba(79, 70, 229, 0.1); color: var(--accent); 
    font-weight: 700; border: 1px solid rgba(79, 70, 229, 0.1);
}

.stats-bar { 
    display: grid; grid-template-columns: repeat(3, 1fr); 
    padding-top: 30px; border-top: 1px solid var(--border); gap: 20px;
}
.stat-unit { display: flex; flex-direction: column; gap: 6px; }
.stat-unit svg { width: 18px; height: 18px; color: var(--accent); opacity: 0.8; }
.stat-label { font-size: 10px; color: var(--sub); text-transform: uppercase; font-weight: 700; letter-spacing: 0.5px; }
.stat-value { font-size: 14px; font-weight: 700; }

.legal-box { 
    max-width: 900px; margin: 0 auto; padding: 60px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 40px;
}
.legal-box h2 { color: var(--text); font-size: 32px; margin-bottom: 40px; }
.legal-box h3 { color: var(--text); font-size: 19px; margin: 35px 0 15px; font-weight: 700; }
.legal-box p { color: var(--sub); font-size: 15px; margin-bottom: 12px; line-height: 1.8; }

/* --- FOOTER --- */
footer { 
    padding: 50px 40px; 
    text-align: center; 
    flex-shrink: 0; 
}
footer span { 
    font-size: 12px; color: var(--sub); cursor: pointer; 
    text-transform: uppercase; letter-spacing: 2px; 
    font-weight: 700; transition: color 0.3s ease; 
}
footer span:hover { color: var(--accent); }

.empty-card {
    justify-content: center; align-items: center; text-align: center;
    border: 2px dashed var(--border); background: rgba(100, 116, 139, 0.02);
    min-height: 350px; opacity: 0.8;
}
.empty-icon { width: 56px; height: 56px; color: var(--sub); margin-bottom: 10px; opacity: 0.5; }

@media (max-width: 900px) { 
    .grid { grid-template-columns: 1fr; } 
    .page { padding: 120px 20px 40px; }
    
    nav { 
        width: 92%;
        padding: 8px 16px;
        top: 15px;
    }

    .nav-sections { display: none; }
    .burger-btn { display: block; }
    
    .nav-controls { 
        gap: 12px; 
        margin-left: 0; 
        padding-left: 12px; 
    }
    
    header h1 { font-size: 26px; }
}