:root{--bg: #030b1f;--surface: #e9f1ff;--text: #0e1b3d;--muted: #64748b;--primary: #0d47a1;--primary-soft: #e8f0ff;--danger: #d62839;--border: #dbe4f0;--shadow: 0 14px 40px rgba(13, 71, 161, .12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at top right,#08225a 0%,#041435 26%,var(--bg) 64%,#020816 100%)}.app-shell{min-height:100vh}.topbar{position:sticky;top:0;z-index:20;display:flex;justify-content:center;align-items:center;gap:16px;padding:8px 10px;background:transparent;border-bottom:0;-webkit-backdrop-filter:none;backdrop-filter:none}.brand{display:flex;align-items:center;gap:10px}.brand-logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:#fff;background:linear-gradient(140deg,#0a2d75,#0c3f9e 45%,#1b64da);border:1px solid rgba(153,203,255,.35);border-radius:14px;padding:7px 14px 7px 9px;box-shadow:0 10px 24px #06205e8c,inset 0 1px #ffffff2e}.brand-logo:hover{filter:brightness(1.1)}.brand-mark{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;font-weight:900;font-size:.95rem;color:#dff1ff;background:linear-gradient(155deg,#04245f,#0b4bc2);border:1px solid rgba(206,231,255,.35);box-shadow:inset 0 1px #ffffff2e}.brand-word{font-size:1.18rem;font-weight:900;letter-spacing:.4px;text-shadow:0 2px 10px rgba(2,16,49,.42)}.nav-links,.nav-actions{display:flex;align-items:center;gap:8px}.mobile-menu-btn{display:none}.floating-menu-btn{position:fixed;right:14px;bottom:14px;z-index:50;width:auto!important;border-radius:999px;box-shadow:0 8px 20px #04143559}.auth-floating{position:fixed;right:14px;bottom:14px;z-index:50;display:flex;gap:8px}.nav-overlay{display:none}.nav-links a{text-decoration:none;color:var(--text);font-weight:600;padding:8px 10px;border-radius:10px}.nav-links a:hover{background:var(--primary-soft)}.btn-primary,.btn-ghost,.btn-danger,button{border:0;cursor:pointer;border-radius:10px;padding:10px 14px;font-weight:600;text-decoration:none}.btn-primary,button{background:var(--primary);color:#fff}.btn-ghost{background:var(--primary-soft);color:var(--primary)}.btn-danger{background:var(--danger);color:#fff}button:disabled{opacity:.6;cursor:not-allowed}.user-pill{background:#eef2ff;color:#1e3a8a;border-radius:999px;padding:7px 12px;font-size:.85rem}.page-wrap{width:min(980px,94vw);margin:20px auto 36px}.container{display:grid;gap:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:16px;display:grid;gap:10px}.hero-card{background:linear-gradient(120deg,#0d47a1,#1c5fc6 65%,#d62839 140%);color:#fff;border-radius:18px;padding:22px}.hero-card h1{margin:0;font-size:1.8rem}.hero-card p{margin:8px 0 0;opacity:.95}.composer textarea{width:100%;min-height:110px;resize:vertical}input,textarea{border:1px solid var(--border);border-radius:10px;padding:11px;font:inherit}.file-picker{display:inline-flex;align-items:center;width:fit-content;padding:8px 12px;border-radius:10px;border:1px dashed #8fa4cd;color:#335899;font-weight:600}.file-picker input{display:none}.post-card p{margin:0;line-height:1.5}.post-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.post-head h4{margin:0;color:var(--primary)}.user-inline{display:inline-flex;align-items:center;gap:8px}.avatar-xs{width:30px;height:30px;border-radius:999px;object-fit:cover;border:1px solid #cbd5e1;background:#e2e8f0;flex-shrink:0}.avatar-xs.placeholder{display:inline-block;background:linear-gradient(135deg,#cbd5e1,#94a3b8)}.comment-line{align-items:flex-start}.post-metrics{display:flex;gap:14px;color:var(--muted);font-size:.88rem}.chat-card{min-height:420px}.chat-box{min-height:220px;max-height:50vh;overflow:auto;border:1px solid var(--border);border-radius:12px;padding:12px;background:#f8fbff}.pill-private{display:inline-block;font-size:.75rem;background:#fee2e2;color:#991b1b;padding:2px 7px;border-radius:999px}.post-media{width:100%;aspect-ratio:1 / 1;max-height:520px;object-fit:contain;object-position:center;border-radius:12px;border:1px solid var(--border);background:#071a46}.media-tile{padding:0;border:0;background:transparent;width:100%;cursor:zoom-in}.media-pdf{width:fit-content}.media-block{display:grid;gap:8px}.reaction-row{justify-content:flex-start;flex-wrap:wrap}.media-viewer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#030a1eeb;display:grid;place-items:center;padding:20px}.media-viewer-content{width:min(1100px,95vw);max-height:92vh;display:grid;gap:12px}.media-viewer-media{width:100%;height:min(80vh,900px);object-fit:contain;border-radius:12px;background:#031232;border:1px solid #123574}.row{display:flex;gap:10px;align-items:center;justify-content:space-between}.admin-row{padding:8px 0;border-bottom:1px dashed #dbe4f0}.admin-row:last-child{border-bottom:none}.muted{color:var(--muted);margin:0}.error-text{margin:0;color:#b91c1c;background:#fee2e2;border:1px solid #fecaca;border-radius:10px;padding:8px 10px}.auth-wrap{min-height:66vh;display:grid;place-items:center}.auth-card{width:min(460px,95vw)}.page-loader{min-height:70vh;display:grid;place-items:center;color:var(--primary);font-weight:700;font-size:1.1rem}@media (max-width: 820px){.topbar{padding:8px 6px}.brand{width:100%;justify-content:center}.nav-links{position:fixed;top:0;right:0;z-index:40;height:100vh;width:min(280px,82vw);background:#e9f1ff;box-shadow:-8px 0 25px #030b1f47;border-left:1px solid var(--border);padding:72px 12px 16px;display:grid;gap:8px;transform:translate(105%);transition:transform .18s ease}.nav-links.floating{display:grid}.nav-links.open{transform:translate(0)}.nav-links a{white-space:nowrap}.nav-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;border:0;background:#020a1c59}.page-wrap{width:min(100%,96vw);margin:14px auto 24px}.card{padding:12px;border-radius:14px}.hero-card{padding:16px}.hero-card h1{font-size:1.35rem}.row{flex-wrap:wrap;align-items:stretch}input,textarea,select{width:100%}.btn-primary,.btn-ghost,.btn-danger,button{width:100%;text-align:center}.composer button,.composer .file-picker,.post-card .row button,.post-card .row a,.chat-card .row button{width:100%}.file-picker{justify-content:center}.post-card .row{gap:8px}.post-card .row input{min-width:0}.reaction-row{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:6px}.reaction-row button{width:auto!important;min-width:42px;flex:0 0 auto;padding:8px 10px}.media-viewer-content{width:100%}.media-viewer-media{height:65vh}.user-pill{width:100%;text-align:center}.post-head{align-items:flex-start;flex-direction:column}.post-metrics{flex-wrap:wrap;gap:8px 12px}.media-viewer{padding:8px}}@media (min-width: 821px){.nav-links.floating{position:fixed;top:0;right:0;z-index:40;height:100vh;width:320px;background:#e9f1ff;box-shadow:-8px 0 25px #030b1f47;border-left:1px solid var(--border);padding:72px 12px 16px;display:grid;gap:8px;transform:translate(105%);transition:transform .18s ease}.nav-links.floating.open{transform:translate(0)}.nav-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;border:0;background:#020a1c59}}.chat-tabs{display:inline-flex;gap:8px}.chat-tabs button{background:#e8eefb;color:#23417f}.chat-tabs button.active{background:var(--primary);color:#fff}.chat-split{display:grid;grid-template-columns:280px 1fr;gap:12px}.chat-users{border:1px solid var(--border);border-radius:12px;padding:8px;max-height:420px;overflow:auto;background:#f8fbff;display:grid;gap:8px}.chat-user-item{width:100%;background:#eef4ff;border:1px solid var(--border);color:var(--text);justify-content:flex-start}.chat-user-item.selected{border-color:#7da2e7;background:#eef4ff}.chat-conversation{display:grid;gap:10px}@media (max-width: 820px){.chat-split{grid-template-columns:1fr}}