:root {
    --bg: #0b0f1a;
    --bg2: #0f1626;
    --panel: #131a2b;
    --panel2: #1a2336;
    --border: #22304a;
    --border2: #31405e;
    --accent: #4f8cff;
    --accent2: #2e63cc;
    --text: #e6edf7;
    --muted: #8a97b3;
    --gold: #d4a017;
    --green: #3ddc84;
    --red: #ff5040;
    --radius: 10px;
}

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

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
}

#particles-bg {
    position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
    background:
        radial-gradient(1200px 600px at 80% -10%, rgba(79, 140, 255, 0.12), transparent 60%),
        radial-gradient(900px 500px at 10% 110%, rgba(30, 60, 130, 0.18), transparent 60%),
        linear-gradient(180deg, #0b0f1a 0%, #0d1322 100%);
}
#particles-bg .dot {
    position: absolute; border-radius: 50%; background: rgba(140, 170, 220, 0.14);
    animation: float linear infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    50% { transform: translateY(-28px) translateX(12px); }
}

/* ─── Topbar ───────────────────────────────────────────────────── */
.topbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(11, 15, 26, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    max-width: 1400px; margin: 0 auto; padding: 10px 22px;
    display: flex; align-items: center; gap: 26px;
}
.brand { display: flex; align-items: baseline; gap: 8px; text-decoration: none; }
.brand-icon { color: var(--accent); font-size: 18px; }
.brand-name { color: #fff; font-weight: 800; letter-spacing: 1.5px; font-size: 17px; }
.brand-sub { color: var(--muted); font-size: 9px; letter-spacing: 1px; }
.main-nav { display: flex; gap: 4px; }
.nav-link {
    color: var(--muted); text-decoration: none; font-size: 12px; font-weight: 600;
    letter-spacing: 1px; padding: 8px 14px; border-radius: 6px; transition: all 0.15s;
}
.nav-link:hover { color: var(--text); background: var(--panel); }
.nav-link.active { color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search-box input {
    width: 210px; padding: 7px 12px; border-radius: 6px; border: 1px solid var(--border2);
    background: var(--panel); color: var(--text); font-size: 12px; outline: none; transition: border 0.15s;
}
.search-box input:focus { border-color: var(--accent); }
.stat-chip {
    background: var(--panel); border: 1px solid var(--border); color: var(--muted);
    padding: 5px 10px; border-radius: 8px; font-size: 11px; white-space: nowrap;
}
.stat-chip span { color: var(--green); font-weight: 700; }
.lang-select {
    background: var(--panel); border: 1px solid var(--border); color: var(--text);
    padding: 5px 8px; border-radius: 8px; font-size: 11px; cursor: pointer; outline: none;
    font-family: inherit; max-width: 92px;
}
.lang-select:focus { border-color: var(--accent); }
.lang-select option { background: var(--panel); color: var(--text); }

.user-zone { display: flex; align-items: center; gap: 8px; }
.user-zone .username { font-size: 12px; font-weight: 700; color: var(--gold); }
.user-zone .avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px; color: #fff;
}

/* ─── Buttons ──────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
    border: none; border-radius: 8px; padding: 10px 20px;
    font-size: 13px; font-weight: 700; letter-spacing: 0.5px; text-decoration: none;
    transition: all 0.15s; font-family: inherit;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }
.btn-primary:hover { filter: brightness(1.12); transform: translateY(-1px); }
.btn-ghost { background: var(--panel2); color: var(--text); border: 1px solid var(--border2); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-gold { background: linear-gradient(135deg, #e8b23a, #c8940f); color: #1a1200; }
.btn-gold:hover { filter: brightness(1.08); }
.btn-danger { background: rgba(255, 80, 64, 0.15); color: var(--red); border: 1px solid rgba(255, 80, 64, 0.4); }
.btn-danger:hover { background: rgba(255, 80, 64, 0.28); }
.btn-sm { padding: 6px 12px; font-size: 11px; border-radius: 6px; }
.btn-lg { padding: 14px 34px; font-size: 15px; }

/* ─── View / layouts ───────────────────────────────────────────── */
.view { position: relative; z-index: 1; max-width: 1400px; margin: 0 auto; padding: 24px 22px 60px; }
.section-title { font-size: 20px; font-weight: 800; color: #fff; letter-spacing: 0.5px; margin: 26px 0 14px; }
.section-title small { color: var(--muted); font-size: 12px; font-weight: 400; margin-left: 10px; }

/* Hero */
.hero {
    border-radius: 14px; overflow: hidden; position: relative;
    border: 1px solid var(--border2);
    background: linear-gradient(135deg, #10203f, #0c1526);
    display: grid; grid-template-columns: 1.6fr 1fr; min-height: 320px;
}
.hero .hero-preview { position: relative; }
.hero .hero-preview canvas { width: 100%; height: 100%; display: block; object-fit: cover; }
.hero .hero-body { padding: 30px; display: flex; flex-direction: column; gap: 10px; justify-content: center; }
.hero .hero-genre { color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }
.hero .hero-title { font-size: 30px; font-weight: 900; color: #fff; }
.hero .hero-desc { color: var(--muted); font-size: 13px; line-height: 1.55; }
.hero .hero-actions { display: flex; gap: 12px; margin-top: 8px; align-items: center; }
.hero .hero-players { color: var(--green); font-size: 12px; }

/* Games grid */
.games-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 18px;
}
.game-card {
    background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; cursor: pointer; transition: all 0.18s; position: relative; display: flex; flex-direction: column;
}
.game-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5); }
.game-card .game-preview { position: relative; }
.game-card .game-preview canvas { width: 100%; height: 150px; display: block; }
.game-card .game-icon {
    position: absolute; right: 10px; top: 10px; width: 40px; height: 40px;
    background: rgba(10, 14, 26, 0.8); border: 1px solid var(--border2); border-radius: 9px;
    display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.game-card .game-info { padding: 14px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.game-card .game-genre { color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.game-card h3 { color: #fff; font-size: 16px; }
.game-card .game-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.tag { background: var(--panel2); border: 1px solid var(--border); color: var(--muted); font-size: 10px; padding: 2px 8px; border-radius: 20px; }
.game-card .game-footer { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-top: 1px solid var(--border); margin-top: auto; }
.game-card .game-online { color: var(--muted); font-size: 11px; }
.game-card .game-online b { color: var(--green); }

/* Game detail */
.game-detail { display: flex; flex-direction: column; gap: 20px; }
.detail-back { color: var(--muted); text-decoration: none; font-size: 12px; display: inline-flex; gap: 6px; align-items: center; }
.detail-back:hover { color: var(--accent); }
.detail-hero {
    border-radius: 14px; overflow: hidden; border: 1px solid var(--border2);
    background: linear-gradient(135deg, #10203f, #0c1526);
    display: grid; grid-template-columns: 1.8fr 1fr;
}
.detail-hero canvas { width: 100%; height: 100%; min-height: 300px; display: block; }
.detail-body { padding: 30px; display: flex; flex-direction: column; gap: 12px; }
.detail-body .detail-genre { color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; }
.detail-body h1 { font-size: 30px; color: #fff; }
.detail-body .detail-desc { color: var(--muted); font-size: 13px; line-height: 1.6; }
.detail-body .detail-actions { display: flex; gap: 12px; margin-top: 6px; flex-wrap: wrap; align-items: center; }
.detail-body .detail-players { color: var(--green); font-size: 12px; }
.detail-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.panel h4 { color: #fff; font-size: 14px; margin-bottom: 12px; letter-spacing: 0.5px; }

/* Leaderboard */
.lb-list { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.lb-item {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--panel2); border: 1px solid var(--border); border-left: 3px solid var(--accent);
    padding: 9px 12px; border-radius: 7px; font-size: 12px;
}
.lb-item .lb-rank { color: var(--gold); font-weight: 800; width: 34px; }
.lb-item .lb-name { color: var(--text); }
.lb-item .lb-score { color: var(--gold); font-weight: 700; }
.lb-empty { color: var(--muted); font-size: 12px; text-align: center; padding: 16px; }

/* Achievements */
.ach-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.ach-item {
    background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; padding: 12px;
    text-align: center; position: relative; opacity: 0.45; transition: all 0.2s;
}
.ach-item.earned { opacity: 1; border-color: var(--gold); box-shadow: 0 0 14px rgba(212, 160, 23, 0.15); }
.ach-item .ach-icon { font-size: 26px; }
.ach-item .ach-name { color: #fff; font-size: 12px; font-weight: 700; margin-top: 6px; }
.ach-item .ach-desc { color: var(--muted); font-size: 10px; margin-top: 3px; }
.ach-item.earned .ach-name { color: var(--gold); }

/* Community */
.community { display: grid; grid-template-columns: 1.5fr 1fr; gap: 18px; }
.chat-box { display: flex; flex-direction: column; height: 520px; }
.chat-rooms { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.chat-room-btn {
    background: var(--panel2); border: 1px solid var(--border); color: var(--muted);
    padding: 5px 12px; border-radius: 20px; font-size: 11px; cursor: pointer; transition: all 0.15s;
}
.chat-room-btn:hover { border-color: var(--accent); color: var(--text); }
.chat-room-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.chat-messages { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding: 6px 2px; }
.chat-msg { background: var(--panel2); border-left: 3px solid var(--accent); padding: 8px 12px; border-radius: 6px; }
.chat-msg .cm-sender { color: var(--gold); font-size: 11px; font-weight: 700; margin-bottom: 2px; }
.chat-msg .cm-text { color: var(--text); font-size: 12px; word-break: break-word; }
.chat-msg .cm-time { color: var(--muted); font-size: 9px; float: right; margin-left: 8px; }
.chat-input-area { display: flex; gap: 8px; margin-top: 10px; }
.chat-input-area input {
    flex: 1; background: var(--panel2); border: 1px solid var(--border2); color: var(--text);
    padding: 10px 12px; border-radius: 8px; font-size: 12px; outline: none;
}
.chat-input-area input:focus { border-color: var(--accent); }
.chat-login-note { color: var(--muted); font-size: 12px; text-align: center; padding: 30px; }

.presence-list { display: flex; flex-direction: column; gap: 8px; }
.presence-row { display: flex; justify-content: space-between; background: var(--panel2); border: 1px solid var(--border); padding: 8px 12px; border-radius: 7px; font-size: 12px; }
.presence-row .pr-name { color: var(--text); }
.presence-row .pr-online b { color: var(--green); }

/* Library / empty states */
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-state .big-icon { font-size: 56px; margin-bottom: 14px; }
.empty-state h2 { color: #fff; font-size: 20px; margin-bottom: 8px; }
.empty-state p { font-size: 13px; margin-bottom: 20px; }

/* Studio */
.studio-hero {
    border-radius: 14px; border: 1px solid var(--border2); padding: 34px;
    background: linear-gradient(135deg, #1c1330, #2a1230);
    display: flex; align-items: center; gap: 26px; margin-bottom: 22px;
}
.studio-hero .sh-icon { font-size: 52px; }
.studio-hero h1 { color: #fff; font-size: 24px; }
.studio-hero p { color: var(--muted); font-size: 13px; margin-top: 6px; max-width: 620px; line-height: 1.5; }
.studio-hero .sh-actions { margin-left: auto; display: flex; gap: 10px; flex-wrap: wrap; }

/* Auth modal */
.modal-backdrop {
    position: fixed; inset: 0; z-index: 1000; background: rgba(6, 9, 18, 0.9);
    display: flex; align-items: center; justify-content: center; padding: 20px;
}
.auth-box {
    width: 360px; background: var(--panel); border: 1px solid var(--border2); border-radius: 14px; padding: 28px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}
.auth-box h2 { color: #fff; font-size: 20px; margin-bottom: 4px; }
.auth-box .auth-sub { color: var(--muted); font-size: 11px; margin-bottom: 20px; }
.auth-box .field { margin-bottom: 14px; }
.auth-box .field label { display: block; color: var(--muted); font-size: 11px; margin-bottom: 5px; }
.auth-box .field input {
    width: 100%; background: var(--panel2); border: 1px solid var(--border2); color: var(--text);
    padding: 10px 12px; border-radius: 8px; font-size: 13px; outline: none;
}
.auth-box .field input:focus { border-color: var(--accent); }
.auth-error { color: var(--red); font-size: 12px; margin: 8px 0; min-height: 14px; }
.auth-toggle { color: var(--accent); font-size: 12px; cursor: pointer; text-align: center; margin-top: 14px; }
.auth-toggle:hover { text-decoration: underline; }

/* Toast */
#toast-root { position: fixed; top: 18px; right: 18px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast {
    background: rgba(19, 26, 43, 0.96); border: 1px solid var(--border2); border-left: 3px solid var(--accent);
    color: var(--text); padding: 12px 18px; border-radius: 8px; font-size: 12px; min-width: 220px;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.5); animation: slidein 0.25s ease;
}
.toast.success { border-left-color: var(--green); }
.toast.error { border-left-color: var(--red); }
.toast.info { border-left-color: var(--accent); }
@keyframes slidein { from { transform: translateX(40px); opacity: 0; } to { transform: none; opacity: 1; } }

/* Footer */
.hub-footer {
    position: relative; z-index: 1; border-top: 1px solid var(--border);
    padding: 26px 22px; max-width: 1400px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; letter-spacing: 1px; font-size: 13px; }
.footer-tech { color: var(--muted); font-size: 10px; margin-left: 10px; letter-spacing: 0.5px; }
.footer-copy { color: var(--muted); font-size: 11px; }

/* Responsive */
@media (max-width: 900px) {
    .topbar-inner { flex-wrap: wrap; gap: 12px; }
    .search-box input { width: 150px; }
    .hero, .detail-hero { grid-template-columns: 1fr; }
    .hero .hero-preview canvas, .detail-hero canvas { height: 220px; }
    .community { grid-template-columns: 1fr; }
    .topbar-right { margin-left: 0; width: 100%; }
    .topbar-right .stat-chip, .topbar-right .search-box { margin-left: 0; }
}