:root {
    --bg: #000000;
    --bg-elev: #0a0a0a;
    --bg-input: #141414;
    --bg-hover: #1a1a1a;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --text-primary: #E1E1E1;
    --text-secondary: #878787;
    --text-muted: #555555;
    --accent: #E1E1E1;
    --accent-hover: #ffffff;
    --accent-glow: rgba(225, 225, 225, 0.06);
    --success: #a3d9c0;
    --success-bg: rgba(163, 217, 192, 0.08);
    --warning: #d4b76b;
    --warning-bg: rgba(212, 183, 107, 0.08);
    --danger: #d9a3a3;
    --danger-bg: rgba(217, 163, 163, 0.08);
    --purple: #b8a3d9;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
    --font-display: 'Jost', 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  body {
    background: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
    padding: 24px 16px 64px;
    -webkit-font-smoothing: antialiased;
  }
  .container { max-width: 900px; margin: 0 auto; }

  /* Header */
  .top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 0 4px;
  }
  .brand {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 0.06em;
  }
  .streak {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--warning-bg);
    color: var(--warning);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-family: var(--font-mono);
    font-weight: 500;
  }
  .streak.zero { background: var(--bg-elev); color: var(--text-muted); }
  .btn-icon {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    padding: 0;
  }
  .btn-icon:hover {
    background: var(--bg-elev);
    color: var(--text-primary);
    border-color: var(--border-strong);
  }
  .header-actions { display: flex; gap: 10px; align-items: center; }
  .sync-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-elev);
    color: var(--text-muted);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
  }
  .sync-badge.synced { color: var(--success); border-color: rgba(163, 217, 192, 0.3); }
  .sync-badge.syncing { color: var(--warning); border-color: rgba(212, 183, 107, 0.3); }
  .sync-badge.error { color: var(--danger); border-color: rgba(217, 163, 163, 0.3); }
  .analyze-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-elev);
    color: var(--text-muted);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
  }
  .analyze-btn:hover { border-color: var(--border-strong); }
  .analyze-btn.on {
    color: var(--text-primary);
    border-color: rgba(225, 225, 225, 0.2);
  }
  .analyze-btn.has-new {
    color: var(--warning);
    border-color: rgba(212, 183, 107, 0.35);
  }
  .analyze-btn .a-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.5;
  }
  .analyze-btn.on .a-dot { opacity: 1; }
  .analyze-btn.has-new .a-dot { animation: pulse 1.5s infinite; }
  .sync-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
  .sync-badge.syncing .sync-dot { animation: pulse 1s infinite; }
  @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
  .settings-section {
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
  }
  .settings-section:last-child { border-bottom: none; }
  .settings-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 12px;
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
  }
  .sync-code-display {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
    word-break: break-all;
    margin-top: 8px;
    cursor: pointer;
  }
  .sync-code-display:hover { border-color: var(--accent); }
  .token-stats {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
  }
  .token-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 12px 14px;
    background: var(--bg-input);
    border-radius: var(--radius);
    border-left: 2px solid var(--accent);
    gap: 12px;
  }
  .token-row-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 4px;
  }
  .token-row-value { text-align: right; }
  .token-row-total {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.2;
  }
  .token-row-detail {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 3px;
    font-family: var(--font-mono);
  }
  .analysis-item {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.15s;
  }
  .analysis-item:hover {
    border-color: var(--border-strong);
    background: var(--bg-hover);
  }
  .analysis-item-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8px;
    gap: 8px;
  }
  .analysis-item-date {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
  }
  .analysis-item-days {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-muted);
    background: var(--bg);
    padding: 2px 8px;
    border-radius: 3px;
  }
  .analysis-item-preview {
    font-size: 12px;
    color: var(--text-primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .analysis-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.7;
  }
  .analysis-empty p { margin: 6px 0; }
  .analysis-toggle-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: var(--bg-input);
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid var(--border);
  }
  .analysis-toggle-info-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
  .analysis-toggle-info-state {
    font-size: 14px;
    color: var(--text-primary);
    margin-top: 3px;
    font-weight: 500;
  }
  .analysis-toggle-info-state.off { color: var(--text-muted); }
  .toggle-switch {
    width: 44px;
    height: 24px;
    background: var(--border);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
  }
  .toggle-switch::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--text-muted);
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: all 0.2s;
  }
  .toggle-switch.on {
    background: var(--accent);
  }
  .toggle-switch.on::after {
    transform: translateX(20px);
    background: var(--bg);
  }