:root,[data-theme=dark]{color-scheme:dark;--bg-app: #0b1120;--bg-surface: #0f172a;--bg-card: #111827;--bg-strip: #111827;--bg-elevated: #1e293b;--bg-hover: #162032;--bg-input: #0f172a;--bg-code: #090d16;--text-primary: #e2e8f0;--text-strong: #f8fafc;--text-muted: #94a3b8;--text-subtle: #64748b;--border-subtle: #1e293b;--border-card: #1f2937;--border-input: #334155;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-border: #3b82f6;--accent-text: #60a5fa;--bubble-in-bg: #1e293b;--bubble-in-border: #334155;--bubble-in-text: #f1f5f9;--bubble-out-bg: #1d4ed8;--bubble-out-text: #ffffff;--badge-online-bg: rgba(16, 185, 129, .16);--badge-online-text: #34d399;--badge-sent-bg: rgba(59, 130, 246, .2);--badge-sent-text: #60a5fa;--badge-pending-bg: rgba(245, 158, 11, .18);--badge-pending-text: #fbbf24;--badge-failed-bg: rgba(239, 68, 68, .18);--badge-failed-text: #f87171;--badge-inactive-bg: rgba(100, 116, 139, .2);--badge-inactive-text: #94a3b8;--danger-bg: #7f1d1d;--danger-border: #991b1b;--danger-text: #fecaca;--danger-hover: #991b1b;--login-bg: radial-gradient(circle at top, #1e293b 0%, #0b1120 70%);--shadow-card: 0 20px 50px rgba(0, 0, 0, .5);--shadow-panel: none;--swatch-active-border: #f8fafc;--swatch-active-ring: rgba(255, 255, 255, .25)}[data-theme=light]{color-scheme:light;--bg-app: #f1f5f9;--bg-surface: #ffffff;--bg-card: #ffffff;--bg-strip: #f8fafc;--bg-elevated: #e2e8f0;--bg-hover: #f1f5f9;--bg-input: #ffffff;--bg-code: #f8fafc;--text-primary: #0f172a;--text-strong: #020617;--text-muted: #475569;--text-subtle: #64748b;--border-subtle: #e2e8f0;--border-card: #cbd5e1;--border-input: #cbd5e1;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-border: #2563eb;--accent-text: #1d4ed8;--bubble-in-bg: #ffffff;--bubble-in-border: #cbd5e1;--bubble-in-text: #0f172a;--bubble-out-bg: #2563eb;--bubble-out-text: #ffffff;--badge-online-bg: rgba(16, 185, 129, .14);--badge-online-text: #047857;--badge-sent-bg: rgba(37, 99, 235, .14);--badge-sent-text: #1d4ed8;--badge-pending-bg: rgba(245, 158, 11, .16);--badge-pending-text: #b45309;--badge-failed-bg: rgba(239, 68, 68, .14);--badge-failed-text: #b91c1c;--badge-inactive-bg: rgba(100, 116, 139, .15);--badge-inactive-text: #475569;--danger-bg: #fee2e2;--danger-border: #fca5a5;--danger-text: #991b1b;--danger-hover: #fecaca;--login-bg: radial-gradient(circle at top, #dbeafe 0%, #f1f5f9 70%);--shadow-card: 0 12px 32px rgba(15, 23, 42, .1);--shadow-panel: 0 1px 3px rgba(15, 23, 42, .05);--swatch-active-border: #0f172a;--swatch-active-ring: rgba(15, 23, 42, .2)}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg-app);color:var(--text-primary);transition:background-color .18s ease,color .18s ease}button,input,textarea,select{font-family:inherit;color:inherit}.login-shell{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--login-bg)}.login-card{width:100%;max-width:390px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:14px;padding:28px;box-shadow:var(--shadow-card)}.login-card h1{margin:0 0 6px;font-size:22px;font-weight:700;color:var(--text-strong)}.login-card p{margin:0 0 20px;color:var(--text-muted);font-size:13px}.field{margin-bottom:14px}.field label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:6px}.input,.textarea,.select{width:100%;background:var(--bg-input);border:1px solid var(--border-input);border-radius:8px;padding:9px 12px;font-size:14px;color:var(--text-strong);outline:none;transition:border-color .15s,background-color .15s}.input:focus,.textarea:focus,.select:focus{border-color:var(--accent-border)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:8px;border:1px solid transparent;font-size:13px;font-weight:600;cursor:pointer;background:var(--accent);color:#fff;transition:background .15s,opacity .15s,border-color .15s}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-secondary{background:var(--bg-elevated);border-color:var(--border-input);color:var(--text-primary)}.btn-secondary:hover:not(:disabled){background:var(--border-input)}.btn-danger{background:var(--danger-bg);border-color:var(--danger-border);color:var(--danger-text)}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.theme-toggle-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:8px;border:1px solid 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.15s}.nav-tab:hover:not(.active){background:var(--bg-hover);color:var(--text-primary)}.nav-tab.active{background:var(--bg-elevated);border-color:var(--border-input);color:var(--text-strong)}.sim-strip{display:flex;gap:10px;padding:10px 18px;background:var(--bg-strip);border-bottom:1px solid var(--border-subtle);overflow-x:auto}.sim-pill{display:flex;align-items:center;gap:10px;padding:8px 13px;border-radius:10px;background:var(--bg-surface);border:1px solid var(--border-subtle);cursor:pointer;min-width:215px;transition:border-color .15s,background 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th{background:var(--bg-surface);color:var(--text-muted);font-weight:600;font-size:12px}.toast{position:fixed;bottom:18px;right:18px;padding:10px 16px;border-radius:10px;background:var(--bg-elevated);border:1px solid var(--accent-border);color:var(--text-strong);font-size:13px;box-shadow:var(--shadow-card);z-index:100}.color-input-wrap{display:flex;align-items:center;gap:8px;background:var(--bg-input);border:1px solid var(--border-input);border-radius:8px;padding:5px 10px;transition:border-color .15s}.color-input-wrap:focus-within{border-color:var(--accent-border)}.color-picker-native{-webkit-appearance:none;appearance:none;width:28px;height:28px;border:1px solid var(--border-input);border-radius:6px;padding:0;background:transparent;cursor:pointer;flex-shrink:0;overflow:hidden}.color-picker-native::-webkit-color-swatch-wrapper{padding:0}.color-picker-native::-webkit-color-swatch{border:none;border-radius:5px}.color-picker-native::-moz-color-swatch{border:none;border-radius:5px}.color-hex-field{flex:1;background:transparent;border:none;outline:none;color:var(--text-strong);font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;padding:4px 2px}.color-palette-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:8px}.color-swatch-btn{width:22px;height:22px;border-radius:6px;border:2px solid transparent;cursor:pointer;padding:0;transition:transform .12s,border-color .12s}.color-swatch-btn:hover{transform:scale(1.12)}.color-swatch-btn.active{border-color:var(--swatch-active-border);box-shadow:0 0 0 2px 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