:root {
    --bg: #0f172a; --card-bg: #1e293b; --nav-bg: #111827; --text: #f8fafc;
    --text-dim: #94a3b8; --primary: #38bdf8; --success: #22c55e;
    --danger: #ef4444; --border: #334155;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--bg); color: var(--text); font-family: 'Inter', sans-serif; display: flex; flex-direction: column; min-height: 100vh; }

nav { display: flex; align-items: center; justify-content: space-between; padding: 1rem 2rem; background: var(--nav-bg); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.logo { font-weight: 800; color: var(--primary); font-size: 1.4rem; }
.nav-links { display: flex; gap: 10px; margin-right: 20px; }
.nav-btn { background: transparent; color: var(--text-dim); width: auto; padding: 5px 10px; font-size: 0.9rem; cursor: pointer; border: none; }
.nav-btn:hover { color: var(--primary); }

.url-bar { display: flex; gap: 8px; flex-grow: 1; max-width: 600px; margin: 0 1.5rem; }
.url-bar input { flex-grow: 1; padding: 10px 14px; border-radius: 6px; border: 1px solid var(--border); background: #000; color: white; outline: none; }

main { flex: 1; max-width: 1000px; margin: 2rem auto; width: 100%; padding: 0 1rem; }
.card { background: var(--card-bg); padding: 1.5rem; border-radius: 12px; margin-bottom: 1.5rem; border: 1px solid var(--border); }

/* Community */
.header-flex { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.post-trigger-btn { width: auto; background: var(--success); padding: 8px 16px; border-radius: 6px; font-weight: bold; color: white; cursor: pointer; border: none; }
.search-container input { width: 100%; padding: 12px; background: #000; border: 1px solid var(--border); border-radius: 6px; color: white; }
.post-card { border-left: 4px solid var(--primary); }
.post-header h4 { color: var(--primary); font-size: 1.2rem; }
.comment { background: rgba(0,0,0,0.2); padding: 10px; border-radius: 4px; margin-top: 5px; font-size: 0.9rem; }
.reply-input-area textarea { width: 100%; background: #000; color: white; border: 1px solid var(--border); padding: 10px; margin: 10px 0; }

/* Dashboard Metrics & Progress */
.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.5rem; }
.metric { background: var(--bg); padding: 1.2rem; border-radius: 8px; text-align: center; border: 1px solid var(--border); }
.metric span { display: block; font-size: 0.75rem; color: var(--text-dim); text-transform: uppercase; }
.metric strong { font-size: 1.6rem; color: var(--primary); }
.browser-container { width: 100%; height: 60vh; background: white; border-radius: 12px; overflow: hidden; border: 4px solid var(--card-bg); }
iframe { width: 100%; height: 100%; border: none; }

/* Modal */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); }
.modal-content { max-width: 500px; margin: 10% auto; }

footer { padding: 2rem; background: var(--nav-bg); border-top: 1px solid var(--border); text-align: center; }
.node-hint code { background: #000; padding: 6px 12px; color: var(--success); border-radius: 4px; }

button { background: var(--primary); color: var(--bg); border: none; padding: 12px; border-radius: 6px; font-weight: bold; cursor: pointer; width: 100%; }