/* MetaKog — core layout (stripped from netid.ai) */
:root {
    --bg: #08080a;
    --sidebar-bg: linear-gradient(180deg, #0f0d0a 0%, #08080a 100%);
    --surface: rgba(12, 12, 14, 0.65);
    --text: #ececed;
    --text-muted: #7a7a7e;
    --primary: #00e5a0;
    --primary-dim: #00b880;
    --border: rgba(255, 255, 255, 0.08);
    --link: #00e5a0;
    --danger: #e85050;
    --radius: 10px;
    --radius-lg: 14px;
    --card-bg: rgba(12, 12, 14, 0.65);
    --card-glass: rgba(12, 12, 14, 0.65);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
    line-height: 1.6;
}
a { color: var(--link); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dim); }

/* ===== Sidebar ===== */
.sidebar {
    width: 220px; min-width: 220px;
    background: var(--sidebar-bg);
    display: flex; flex-direction: column;
    padding: 5px 5px 0;
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 100;
    transition: width .2s, min-width .2s;
    overflow: hidden;
    border-right: 1px solid var(--border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}
.sidebar.collapsed { width: 42px; min-width: 42px; }
body:has(.sidebar.collapsed) .main { margin-left: 42px; }
.sidebar.collapsed .sidebar-nav a span:not(.icon) { display: none; }
.sidebar.collapsed .sidebar-nav .icon { margin: 0; }
.sidebar.collapsed .sidebar-nav a { justify-content: center; padding: 9px 0; }
.sidebar.collapsed .sidebar-footer { display: none; }
.sidebar.collapsed .sidebar-lang { display: none; }

.sidebar-header { padding: 8px 4px 20px 4px; }
.sidebar-toggle {
    background: none; border: none; color: var(--text-muted);
    font-size: 1.2rem; cursor: pointer; padding: 4px 8px;
    border-radius: 6px; transition: all .15s;
}
.sidebar-toggle:hover { color: var(--text); background: rgba(255,255,255,0.05); }

.sidebar-nav { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.sidebar-nav-wrap {
    flex: 1; overflow-y: auto;
    scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.sidebar-nav-wrap::-webkit-scrollbar { width: 4px; }
.sidebar-nav-wrap::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-nav a {
    display: flex; align-items: center; gap: 8px;
    padding: 9px 12px; border-radius: 8px;
    text-decoration: none; color: var(--text-muted);
    font-size: .9rem; transition: all .15s;
    margin-bottom: 2px;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.sidebar-nav a.active {
    background: linear-gradient(90deg, rgba(0,229,160,0.12), transparent);
    color: var(--primary);
}
.sidebar-nav a .icon { min-width: 20px; text-align: center; }

.sidebar-divider {
    border: none; border-top: 1px solid var(--border);
    margin: 8px 12px;
}

.sidebar-lang { padding: 8px 0; text-align: center; }
.sidebar-lang select {
    width: 90%; background: #1a1a28; color: var(--text);
    border: 1px solid var(--border); border-radius: 4px;
    padding: 4px 8px; font-size: .8rem; cursor: pointer;
}

.sidebar-footer {
    padding: 12px; text-align: center;
    border-top: 1px solid var(--border);
    font-size: .8rem; color: var(--text-muted);
}
.sidebar-footer a { color: var(--text-muted); }
.sidebar-footer a:hover { color: var(--primary); }

/* ===== Top Bar ===== */
.top-bar {
    position: fixed; top: 0; left: 220px; right: 0;
    height: 48px; z-index: 90;
    display: flex; align-items: center; justify-content: flex-end;
    gap: 12px; padding: 0 20px;
    background: rgba(8,8,10,0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
body:has(.sidebar.collapsed) .top-bar { left: 42px; }
.top-bar .avatar {
    width: 32px; height: 32px; object-fit: contain;
    border-radius: 50%; cursor: pointer;
}

/* ===== Main Content ===== */
.main {
    flex: 1;
    margin-left: 220px;
    margin-top: 48px;
    min-height: calc(100vh - 48px);
    transition: margin-left .2s;
}
.page-content {
    max-width: 1100px; width: 100%;
    margin: 0 auto; padding: 32px 24px;
}

/* ===== Hero ===== */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}
.hero h1 {
    font-size: 3.2rem; font-weight: 800;
    margin-bottom: 20px; letter-spacing: -0.5px;
}
.hero .subtitle {
    font-size: 1.2rem; color: var(--text-muted);
    max-width: 600px; margin: 0 auto 32px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn-primary {
    background: var(--primary); color: #000;
    padding: 10px 24px; border-radius: var(--radius);
    font-weight: 600; text-decoration: none;
    border: none; cursor: pointer; font-size: 1rem;
    transition: all .15s;
}
.btn-primary:hover { background: var(--primary-dim); color: #000; }
.btn-secondary {
    background: transparent; color: var(--text);
    padding: 10px 24px; border-radius: var(--radius);
    border: 1px solid var(--border);
    text-decoration: none; font-size: 1rem;
    transition: all .15s;
}
.btn-secondary:hover { border-color: var(--text-muted); }
.btn-large { padding: 12px 32px; font-size: 1.1rem; }

/* ===== Cards ===== */
.card-glass {
    background: var(--card-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(8px);
    transition: border-color .2s, box-shadow .2s;
}
.card-glass:hover {
    border-color: rgba(0,229,160,0.3);
    box-shadow: 0 4px 20px rgba(0,229,160,0.08);
}
.card-icon { font-size: 2rem; margin-bottom: 12px; }
.card-glass h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--primary); }
.card-glass p { color: var(--text-muted); font-size: .95rem; }

/* Grid */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ===== Divider ===== */
.divider-glow {
    height: 1px; margin: 40px 0;
    background: linear-gradient(90deg, transparent, rgba(0,229,160,0.3), transparent);
}

/* ===== Footer ===== */
footer {
    border-top: 1px solid var(--border);
    padding: 24px 0; margin-top: 80px;
    text-align: center; color: var(--text-muted); font-size: .85rem;
}

/* ===== Badge ===== */
.hero-badge {
    display: inline-block;
    padding: 6px 16px; border-radius: 20px;
    font-size: .85rem; font-weight: 500;
    background: rgba(0,229,160,0.08);
    border: 1px solid rgba(0,229,160,0.2);
    color: var(--primary); margin-bottom: 16px;
}

/* ===== Animations ===== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.anim-up { animation: fadeUp .6s ease both; }
.anim-up-1 { animation-delay: .1s; }
.anim-up-2 { animation-delay: .2s; }
.anim-up-3 { animation-delay: .3s; }
.anim-up-4 { animation-delay: .4s; }

/* ===== Responsive (exact netid.ai pattern) ===== */
@media (max-width: 768px) {
    body { flex-direction: column; }
    .sidebar {
        width: 42px; min-width: 42px;
        left: 0;
    }
    .sidebar .sidebar-nav a span:not(.icon) { display: none; }
    .sidebar .sidebar-nav .icon { margin: 0; }
    .sidebar .sidebar-nav a { justify-content: center; padding: 9px 0; }
    .sidebar .sidebar-footer { display: none; }
    .sidebar .sidebar-nav-wrap { overflow-y: hidden; }
    .sidebar .sidebar-lang { display: none; }
    /* Expand on toggle click */
    .sidebar.expanded {
        width: 220px; min-width: 220px;
    }
    .sidebar.expanded .sidebar-nav a span:not(.icon) { display: inline; }
    .sidebar.expanded .sidebar-nav a { justify-content: flex-start; padding: 9px 12px; }
    .sidebar.expanded .sidebar-footer { display: block; }
    .sidebar.expanded .sidebar-nav-wrap { overflow-y: auto; }
    .sidebar.expanded .sidebar-lang { display: block; }
    .main { margin-left: 42px; padding-top: 0; }
    .sidebar.expanded ~ .main { margin-left: 220px; }
    .top-bar { left: 42px; }
    .sidebar.expanded ~ .top-bar { left: 220px; }
    .page-content { padding: 16px 12px; }
    .grid-3 { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2rem; }
}