.timer-container {
      text-align: center;
      padding: 20px 0;
    }

    .preset-grid {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 32px;
    }

    .preset-btn {
      padding: 10px 20px;
      border: 2px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-surface);
      font-family: var(--font-body);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--color-text);
      cursor: pointer;
      transition: all var(--transition-fast);
    }

    .preset-btn:hover {
      border-color: var(--color-primary);
      background: var(--color-primary-light);
    }

    .preset-btn.active {
      border-color: var(--color-primary);
      background: var(--color-primary);
      color: #fff;
    }

    .custom-time {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-bottom: 30px;
    }

    .time-input-group {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
    }

    .time-input {
      width: 80px;
      padding: 12px 8px;
      border: 2px solid var(--color-border);
      border-radius: var(--radius-sm);
      font-family: var(--font-mono);
      font-size: 1.2rem;
      font-weight: 700;
      text-align: center;
      color: var(--color-text);
      background: var(--color-surface);
      outline: none;
      -moz-appearance: textfield;
    }

    .time-input::-webkit-inner-spin-button,
    .time-input::-webkit-outer-spin-button {
      -webkit-appearance: none;
      margin: 0;
    }

    .time-input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px var(--color-primary-light);
    }

    .time-separator {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--color-text-muted);
    }

    .time-label {
      font-size: 0.7rem;
      font-weight: 600;
      text-transform: uppercase;
      color: var(--color-text-muted);
      letter-spacing: 0.05em;
    }

    .timer-display {
      font-size: 8rem;
      font-weight: 700;
      font-family: var(--font-mono);
      color: var(--color-text);
      line-height: 1;
      margin: 24px 0;
      letter-spacing: -0.02em;
      user-select: none;
      transition: color 0.3s ease;
    }

    .timer-display.warning {
      color: #f59e0b;
    }

    .timer-display.danger {
      color: #ef4444;
      animation: pulse 1s ease-in-out infinite;
    }

    .timer-display.done {
      color: #ef4444;
      animation: pulse 0.5s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.5; }
    }

    .progress-bar-container {
      width: 100%;
      max-width: 500px;
      height: 8px;
      background: var(--color-border-light);
      border-radius: 4px;
      margin: 0 auto 28px;
      overflow: hidden;
    }

    .progress-bar-fill {
      height: 100%;
      background: var(--color-primary);
      border-radius: 4px;
      transition: width 1s linear, background-color 0.3s;
      width: 100%;
    }

    .progress-bar-fill.warning { background: #f59e0b; }
    .progress-bar-fill.danger { background: #ef4444; }

    .controls {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 8px;
    }

    .control-btn {
      padding: 14px 24px;
      border: none;
      border-radius: var(--radius-sm);
      font-family: var(--font-body);
      font-size: 0.95rem;
      font-weight: 700;
      cursor: pointer;
      transition: all var(--transition-fast);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      min-width: 130px;
    }

    .control-btn.start {
      background: var(--color-primary);
      color: #fff;
    }

    .control-btn.start:hover { opacity: 0.92; }

    .control-btn.pause {
      background: #f59e0b;
      color: #fff;
    }

    .control-btn.pause:hover { opacity: 0.92; }

    .control-btn.reset {
      background: var(--color-surface);
      color: var(--color-text);
      border: 2px solid var(--color-border);
    }

    .control-btn.reset:hover {
      border-color: var(--color-primary);
      background: var(--color-primary-light);
    }

    .control-btn.fullscreen {
      background: #111827;
      color: #fff;
    }

    .control-btn.fullscreen:hover {
      opacity: 0.92;
    }

    .status-msg {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--color-text-muted);
      margin-top: 12px;
      min-height: 28px;
    }

    .options-row {
      margin: 18px auto 0;
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 0.9rem;
      color: var(--color-text-muted);
    }

    .options-row label {
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .sound-picker {
      margin-top: 24px;
      max-width: 560px;
      margin-left: auto;
      margin-right: auto;
      text-align: left;
    }

    .sound-picker-title {
      font-size: 0.8rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-text-muted);
      margin-bottom: 12px;
      text-align: center;
    }

    .sound-group {
      margin-bottom: 12px;
    }

    .sound-group-label {
      font-size: 0.68rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--color-text-muted);
      margin-bottom: 6px;
    }

    .sound-group-options {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .sound-option {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 10px;
      border: 2px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-surface);
      font-family: var(--font-body);
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--color-text);
      cursor: pointer;
      transition: all var(--transition-fast);
      user-select: none;
    }

    .sound-option:hover {
      border-color: var(--color-primary);
      background: var(--color-primary-light);
    }

    .sound-option.selected {
      border-color: var(--color-primary);
      background: var(--color-primary);
      color: #fff;
    }

    .preview-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border: none;
      border-radius: 50%;
      background: rgba(0, 0, 0, 0.07);
      color: inherit;
      cursor: pointer;
      font-size: 0.6rem;
      padding: 0;
      transition: background var(--transition-fast);
      line-height: 1;
    }

    .preview-btn:hover {
      background: rgba(0, 0, 0, 0.15);
    }

    .sound-option.selected .preview-btn {
      background: rgba(255, 255, 255, 0.25);
    }

    .sound-option.selected .preview-btn:hover {
      background: rgba(255, 255, 255, 0.4);
    }

    @media (max-width: 680px) {
      .timer-display { font-size: 4.2rem; }
      .preset-btn { padding: 8px 14px; font-size: 0.82rem; }
      .control-btn { padding: 12px 18px; font-size: 0.86rem; min-width: 108px; }
      .custom-time { gap: 6px; }
      .time-input { width: 66px; font-size: 1rem; }
      .options-row { font-size: 0.82rem; }
    }