:root {
  --purple: #C77DFF;
  --blue: #4D96FF;
  --coral: #FF6B6B;
  --gray: #B0B0B0;
  --mint: #6BCB77;
  --bg: #fef9f0;
  --card: #ffffff;
  --text: #2d2d2d;
  --sub: #888;
  --border: #e0d6c8;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 90px;
  margin: 16px auto;
  max-width: 600px;
  border: 1px dashed #d8cdb9;
  border-radius: 12px;
  background: #fffdf8;
}
.ad-label {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: #bbb;
}

/* 도구 간 이동 네비게이션 */
.tool-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  max-width: 600px;
  margin: 16px auto 0;
  padding: 0 16px;
}
.tool-nav-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1.5px solid #ccc;
  color: #888;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.15s;
}
.tool-nav-item:hover {
  border-color: #666;
  color: #444;
}
.tool-nav-item.active {
  border-color: #222;
  color: #222;
}

.tools_header {
  background: linear-gradient(135deg, #C77DFF 0%, #4D96FF 100%);
  padding: 36px 20px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.tools_header::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
}
.tools_header h1 {
  font-family: 'Gaegu', cursive;
  font-size: 2.4rem;
  color: #fff;
  text-shadow: 2px 3px 0 rgba(0,0,0,0.12);
  position: relative; z-index: 1;
}
.tools_header p {
  color: rgba(255,255,255,0.92);
  font-size: 0.95rem;
  margin-top: 6px;
  position: relative; z-index: 1;
}

.game-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px;
}

.layout-row {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.timer-panel {
  flex: 1 1 380px;
}

.todo-panel {
  flex: 1 1 300px;
}

@media (max-width: 720px) {
  .layout-row {
    flex-direction: column;
  }
  .timer-panel,
  .todo-panel {
    flex: 1 1 auto;
    width: 100%;
  }
}

.panel {
  background: var(--card);
  border-radius: 24px;
  padding: 28px 22px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.07);
  border: 2px solid var(--border);
  text-align: center;
}

.panel h2 {
  font-family: 'Gaegu', cursive;
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: #444;
}

/* 시간 입력 */
.size-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
}
.size-row label {
  font-size: 14px;
  color: #444;
  font-weight: 600;
}
.size-row input[type="number"] {
  width: 70px;
  padding: 8px 10px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  text-align: center;
}

.lock-row {
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
}
.lock-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #444;
  cursor: pointer;
}
.lock-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--purple);
}

/* 타이머 시각화 */
.timer-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin: 22px 0;
}

#timerCanvas {
  max-width: 100%;
  height: auto;
}

.phase-label {
  font-family: 'Gaegu', cursive;
  font-size: 1.3rem;
  font-weight: 700;
  color: #888;
  margin-bottom: 4px;
}
.phase-label.phase-study { color: var(--coral); }
.phase-label.phase-break { color: #888; }
.phase-label.phase-paused { color: var(--purple); }
.phase-label.phase-done { color: var(--mint); }

.time-label {
  font-family: 'Gaegu', cursive;
  font-size: 2.6rem;
  font-weight: 700;
  color: #333;
  font-variant-numeric: tabular-nums;
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff;
  border: none;
  border-radius: 14px;
  padding: 14px 28px;
  font-family: 'Gaegu', cursive;
  font-size: 1.15rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(199,125,255,0.3);
}
.btn-primary:hover { transform: translateY(-2px); }

.btn-secondary {
  background: #f0f0f0;
  border: 2px solid #e0e0e0;
  color: #888;
  border-radius: 14px;
  padding: 14px 22px;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: 'Noto Sans KR', sans-serif;
}
.btn-secondary:hover { background: #e5e5e5; }

/* 할 일 목록 */
.todo-panel {
  display: flex;
  flex-direction: column;
}

.todo-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.todo-input-row input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-family: 'Noto Sans KR', sans-serif;
}

.btn-add-todo {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  font-family: 'Noto Sans KR', sans-serif;
}
.btn-add-todo:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.todo-count {
  text-align: right;
  font-size: 12px;
  color: #bbb;
  margin-bottom: 10px;
}

.todo-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  max-height: 360px;
  overflow-y: auto;
  text-align: left;
}

.todo-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: #fafafa;
  border: 1.5px solid var(--border);
  border-radius: 10px;
}

.todo-item.completed {
  background: #f2f2f2;
}

.todo-item.dragging {
  opacity: 0.5;
}

.todo-drag {
  display: flex;
  align-items: center;
  color: #ccc;
  cursor: grab;
  flex-shrink: 0;
  touch-action: none;
}
.todo-drag:active {
  cursor: grabbing;
}

.todo-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
  cursor: pointer;
}

.todo-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  accent-color: var(--mint);
}

.todo-text {
  font-size: 14px;
  color: #333;
  word-break: break-word;
}

.todo-item.completed .todo-text {
  color: #aaa;
  text-decoration: line-through;
}

.todo-remove {
  background: none;
  border: none;
  color: #ccc;
  font-size: 14px;
  cursor: pointer;
  padding: 4px 6px;
  flex-shrink: 0;
}
.todo-remove:hover {
  color: var(--coral);
}

.todo-empty {
  font-size: 13px;
  color: #bbb;
  text-align: center;
  padding: 20px 0;
}

.todo-clear-btn {
  width: 100%;
  margin-top: auto;
}

.tools_footer {
  text-align: center;
  padding: 40px 20px 20px;
  font-size: 0.8rem;
  color: #bbb;
}

@media (max-width: 420px) {
  .tools_header h1 { font-size: 2rem; }
  .time-label { font-size: 2.1rem; }
}