/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f0f8ff;
  --color-white: #ffffff;
  --color-primary: #7ec8e3;
  --color-primary-dark: #4fa8cc;
  --color-primary-light: #d4eef9;
  --color-text: #2c4a5a;
  --color-text-muted: #7a9bab;
  --color-checked-bg: #e2f5fc;
  --color-checked-text: #9ac0d4;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(80, 140, 170, 0.10);
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans',
    'Hiragino Kaku Gothic ProN', 'Noto Sans JP', 'YuGothic', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ===== HEADER ===== */
header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 16px 20px;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(80, 150, 185, 0.20);
}

header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ===== MAIN ===== */
main {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px 14px 48px;
}

/* ===== SCENE SWITCHER ===== */
.scene-switcher {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.scene-btn {
  flex: 1;
  padding: 13px 8px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-primary-dark);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
}

.scene-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ===== PROGRESS ===== */
.progress-wrap {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.progress-bar {
  height: 8px;
  background: var(--color-primary-light);
  border-radius: 99px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 99px;
  transition: width 0.35s ease;
  width: 0%;
}

/* ===== CATEGORY ===== */
.category {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: var(--shadow);
}

.category-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

/* ===== ITEM LIST ===== */
.item-list {
  list-style: none;
  margin-bottom: 10px;
}

.item {
  display: flex;
  align-items: center;
  padding: 9px 6px;
  border-bottom: 1px solid #eef5f8;
  border-radius: 8px;
  transition: background 0.15s;
}

.item:last-child {
  border-bottom: none;
}

.item.checked {
  background: var(--color-checked-bg);
}

.item-label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  min-width: 0;
  -webkit-tap-highlight-color: transparent;
}

.item-label input[type="checkbox"] {
  width: 22px;
  height: 22px;
  min-width: 22px;
  accent-color: var(--color-primary);
  cursor: pointer;
  border-radius: 4px;
}

.item-name {
  font-size: 0.98rem;
  transition: color 0.15s;
  word-break: break-all;
}

.item.checked .item-name {
  color: var(--color-checked-text);
  text-decoration: line-through;
  text-decoration-color: var(--color-checked-text);
}

.delete-btn {
  padding: 6px 10px;
  border: none;
  background: none;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
  min-width: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}

.delete-btn:active {
  background: #ffe8e8;
  color: #d95c5c;
}

/* ===== ADD ITEM ROW ===== */
.add-item-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.add-input {
  flex: 1;
  padding: 10px 12px;
  border: 1.5px solid var(--color-primary-light);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.2s;
  min-width: 0;
}

.add-input:focus {
  border-color: var(--color-primary);
}

.add-input::placeholder {
  color: var(--color-text-muted);
}

.add-btn {
  padding: 10px 16px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.add-btn:active {
  background: var(--color-primary-dark);
}

/* ===== RESET BUTTON ===== */
.reset-wrap {
  text-align: center;
  margin-top: 8px;
}

.reset-btn {
  padding: 12px 32px;
  background: var(--color-white);
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-primary-light);
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.reset-btn:active {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* ===== EMPTY STATE ===== */
.empty-msg {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  padding: 8px 0 4px;
}