:root{--surface: #171a21;--surface-raised: #1f232c;--border: #2a2f3a;--text: #e5e7eb;--text-dim: #9aa0ac;--accent: #5865f2;--accent-hover: #6f7bf5;--success: #3ba55d;--danger: #ed4245;--warning: #faa61a;--radius: 12px}*{box-sizing:border-box}html,body{margin:0;min-height:100%;color:var(--text);background:radial-gradient(circle at top,#1e293b,#0f172a 35%,#020617);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#app{position:relative;min-height:100dvh;overflow:hidden}#app:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#3b82f629,#a855f71f,#0f172a00);pointer-events:none}.page-header{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 32px;flex-wrap:wrap}.brand-row{display:flex;align-items:center;gap:14px}.brand-logo{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#3b82f6,#8b5cf6);color:#fff;font-weight:800;font-size:22px;box-shadow:0 18px 50px #3b82f659;flex-shrink:0}.brand-name{font-size:22px;font-weight:800}.brand-sub{font-size:13px;opacity:.75}.header-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.lang-select-wrap{display:inline-flex;align-items:center;gap:8px;height:44px;box-sizing:border-box;padding:0 12px;border-radius:12px;border:1px solid rgba(148,163,184,.35);background:#0f172aa6;box-shadow:0 10px 30px #0206173d;backdrop-filter:blur(14px)}.lang-select-label{font-size:11px;font-weight:800;letter-spacing:.8px;opacity:.72;text-transform:uppercase;color:#cbd5e1;line-height:1}.lang-select-inner{position:relative;display:inline-flex;align-items:center;align-self:stretch;min-width:58px}.lang-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;border:1px solid rgba(148,163,184,.18);border-radius:10px;background:#0f172ab8;color:#f8fafc;font-weight:800;cursor:pointer;outline:none;height:32px;line-height:32px;padding:0 28px 0 12px;font-size:13px;box-shadow:inset 0 1px #ffffff08;font-family:inherit}.lang-select-chevron{position:absolute;right:10px;pointer-events:none;color:#94a3b8;font-size:12px;line-height:1}.hero-wrap{position:relative;z-index:1;display:grid;place-items:center;padding:8px 32px 64px}.hero-card{width:min(720px,100%);background:#0f172ab8;border:1px solid rgba(148,163,184,.18);border-radius:28px;padding:32px;box-shadow:0 30px 90px 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12px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}button{cursor:pointer;border:none;border-radius:8px;padding:10px 16px;font-size:14px;font-weight:500;font-family:inherit;color:var(--text);background:var(--surface-raised);border:1px solid var(--border);transition:background .15s ease,border-color .15s ease}button:hover{border-color:var(--accent)}button.primary{background:linear-gradient(135deg,#3b82f6,#8b5cf6);border-color:transparent;color:#fff}button.primary:hover{filter:brightness(1.08)}button.danger:hover{border-color:var(--danger)}button:disabled{opacity:.5;cursor:not-allowed}.status-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);padding:6px 12px;background:var(--surface-raised);border-radius:999px;border:1px solid var(--border);margin-bottom:16px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--text-dim)}.status-dot.connected{background:var(--success)}.status-dot.failed,.status-dot.disconnected{background:var(--danger)}.status-dot.connecting,.status-dot.waiting-for-peer{background:var(--warning)}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 24px;text-align:center;color:var(--text-dim);margin-bottom:16px;transition:border-color .15s ease,background .15s ease}.dropzone.dragover{border-color:var(--accent);background:#5865f214}.dropzone p{margin:0 0 12px;font-size:14px}.transfer-list{display:flex;flex-direction:column;gap:10px}.transfer-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.transfer-item .row{display:flex;justify-content:space-between;align-items:center;gap:12px}.transfer-item .name{font-size:14px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.transfer-item .meta{font-size:12px;color:var(--text-dim);margin-top:4px;display:flex;gap:12px;flex-wrap:wrap}.progress-track{height:6px;border-radius:999px;background:var(--surface-raised);overflow:hidden;margin-top:10px}.progress-fill{height:100%;background:var(--accent);transition:width .2s ease}.progress-fill.completed{background:var(--success)}.progress-fill.failed,.progress-fill.cancelled,.progress-fill.rejected{background:var(--danger)}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--surface-raised);border:1px solid var(--border);border-radius:10px;padding:14px 18px;max-width:520px;font-size:14px;line-height:1.4;box-shadow:0 8px 24px #0006;z-index:2}.toast.error{border-color:var(--danger)}.modal-backdrop{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;padding:16px;z-index:3}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;max-width:420px;width:100%}.modal h2{font-size:16px;margin:0 0 8px}.modal .file-meta{font-size:13px;color:var(--text-dim);margin-bottom:20px}.modal .actions{display:flex;gap:10px;justify-content:flex-end}@media (max-width: 560px){.page-header{padding:20px}.hero-wrap{padding:8px 16px 48px}.hero-card{padding:24px}.dropzone{padding:32px 16px}}