:root {
  --bg: #eef0ed;
  --panel: #e8e6df;
  --panel-2: #efeee9;
  --text: #385847;
  --muted: #5d7f61;
  --line: #c7c4ba;
  --line-strong: #9faf88;
  --accent: #5e885b;
  --done: #a7b58c;
  --danger: #8c6a65;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  overflow-x: hidden;
}

.app-shell {
  --ui-scale: 0.7;
  width: calc(min(860px, 92vw) / var(--ui-scale));
  margin: 8px auto 0;
  transform: scale(var(--ui-scale));
  transform-origin: top center;
}

.hero.center {
  text-align: center;
  margin-bottom: 10px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 3.7rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #3f6747;
}

.hero p {
  margin: 6px 0 0;
  font-size: clamp(0.98rem, 2.1vw, 1.55rem);
  color: var(--muted);
  font-style: italic;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin: 10px 0 12px;
}

.lang-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.auth-panel {
  flex: 1 1 500px;
  min-width: 280px;
}

.auth-row {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.auth-message {
  margin: 6px 0 0;
  text-align: right;
  min-height: 1.2em;
}

.auth-links {
  margin-top: 6px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.auth-links a {
  color: #3f6747;
  text-decoration: underline;
  font-weight: 700;
}

.user-email {
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  color: #3f6448;
  font-weight: 600;
}

input,
select,
button,
a {
  font: inherit;
}

input,
select {
  background: #f2f2ee;
  border: 2px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  padding: 8px 12px;
}

input::placeholder {
  color: #8a9a7f;
}

.btn,
.pill-btn,
.plus-btn,
.generate-btn,
.icon-btn {
  border: 0;
  cursor: pointer;
  color: var(--text);
  text-decoration: none;
}

.btn {
  background: #eef1ec;
  border: 2px solid var(--line-strong);
  border-radius: 14px;
  padding: 8px 12px;
}

.btn:hover,
.pill-btn:hover,
.generate-btn:hover,
.plus-btn:hover,
.icon-btn:hover {
  filter: brightness(0.97);
}

.hidden {
  display: none !important;
}

.panel {
  border: 2px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: 0 3px 10px rgba(92, 83, 68, 0.08);
}

.setup-panel {
  padding: 20px 20px 16px;
}

.landing-panel {
  padding: 22px 20px 20px;
}

.center-note {
  text-align: center;
  margin-bottom: 14px;
}

.landing-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.landing-action-card {
  border: 2px solid var(--line);
  border-radius: 18px;
  background: var(--panel-2);
  color: var(--text);
  text-decoration: none;
  padding: 18px;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  transition: transform 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.landing-action-card:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: #f3f4ef;
}

.landing-action-title {
  font-weight: 800;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: #3f6747;
}

.landing-action-desc {
  font-weight: 600;
  color: #5e7e62;
  font-size: 0.9rem;
  line-height: 1.4;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.panel-head h2 {
  margin: 0;
  color: #3f6747;
  font-size: clamp(1.28rem, 2.4vw, 1.7rem);
}

.panel-head-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.counter-pill {
  border: 2px solid var(--line);
  border-radius: 999px;
  background: #eef1ec;
  color: #5e7e5e;
  font-weight: 700;
  padding: 4px 10px;
  min-width: 90px;
  text-align: center;
}

.icon-btn {
  background: #eef1ec;
  border: 2px solid var(--line);
  border-radius: 12px;
  width: 36px;
  height: 36px;
  font-size: 0.96rem;
}

.task-input-row {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.task-input-row input {
  font-size: 1.08rem;
  line-height: 1.2;
  height: 50px;
  border-radius: 14px;
}

.plus-btn {
  width: 50px;
  border-radius: 14px;
  background: var(--accent);
  color: #edf1e9;
  font-size: 1.8rem;
}

.task-actions-row {
  margin-top: 10px;
  display: flex;
  gap: 10px;
}

.pill-btn {
  background: #e9eee6;
  border: 2px solid var(--line-strong);
  border-radius: 999px;
  color: #3f6747;
  font-size: clamp(0.95rem, 1.7vw, 1.05rem);
  font-weight: 700;
  padding: 8px 16px;
}

.chip-box {
  margin-top: 12px;
  border: 2px solid var(--line);
  border-radius: 20px;
  background: var(--panel-2);
  min-height: 170px;
  padding: 12px;
}

.chip-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.chip {
  border: 2px solid var(--line);
  border-radius: 10px;
  background: #f3f3ee;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(0.92rem, 1.4vw, 1rem);
  font-weight: 700;
  padding: 8px 10px;
}

.chip .chip-remove {
  border: 0;
  background: transparent;
  color: #8e9b86;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.generate-btn {
  display: block;
  width: fit-content;
  margin: 18px auto 4px;
  background: #5e885b;
  color: #ecf2e8;
  border-radius: 999px;
  padding: 10px 30px;
  font-size: clamp(1.06rem, 1.8vw, 1.36rem);
  font-weight: 800;
}

.generate-btn.disabled {
  opacity: 0.58;
}

.board-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.size-inline,
.action-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.board-panel {
  padding: 12px;
  max-width: 760px;
  margin: 0 auto;
}

.board-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.board-meta-left {
  min-width: 0;
}

.board-meta-right {
  flex: 0 0 auto;
}

.board-today-pill {
  min-width: 180px;
  text-align: center;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: #eef1ec;
  color: #3f6747;
  font-weight: 800;
  padding: 12px 16px;
  font-size: 1.05rem;
}

.subtle {
  margin: 0 0 5px;
  color: #5e7e62;
  font-size: 0.92rem;
}

.bingo-message {
  margin: 2px 0 10px;
  min-height: 1.4em;
  color: #5b8c60;
  font-size: 0.98rem;
  font-weight: 800;
}

.board-shell {
  border: 2px solid var(--line);
  border-radius: 20px;
  background: var(--panel-2);
  padding: 10px;
}

.board {
  display: grid;
  gap: 10px;
}

.board-cell {
  border: 2px solid var(--line);
  border-radius: 14px;
  background: #ecebe6;
  aspect-ratio: 1 / 1;
  min-height: 70px;
  font-size: clamp(0.85rem, 1.5vw, 0.98rem);
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.2;
  padding: 8px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease;
}

.board-cell:hover {
  transform: translateY(-1px);
}

.board-cell.done {
  background: var(--done);
  border-color: #7e9b6f;
  color: #274131;
}

.board-cell.bingo-row {
  box-shadow: inset 0 0 0 3px #3f6747;
}

.nav-row {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-row.center-nav {
  justify-content: center;
}

.app-footer {
  margin-top: 12px;
  text-align: center;
  color: #8ea08f;
  font-weight: 700;
  font-size: clamp(0.9rem, 1.3vw, 1.2rem);
}

.calendar-panel {
  padding: 14px;
  max-width: 760px;
  margin: 0 auto;
}

.calendar-panel > h2 {
  margin: 0 0 8px;
  color: #3f6747;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.calendar-stats-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.calendar-stat-card {
  border: 2px solid var(--line);
  border-radius: 14px;
  background: #eef1ec;
  padding: 8px 10px;
}

.calendar-stat-label {
  color: #5e7e62;
  font-size: 0.78rem;
  font-weight: 700;
}

.calendar-stat-value {
  color: #3f6747;
  font-size: 1.2rem;
  font-weight: 900;
  margin-top: 2px;
}

.year-heatmap-wrap {
  margin-top: 10px;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--panel-2);
  padding: 10px;
  overflow-x: auto;
}

.year-heatmap-head {
  display: grid;
  grid-template-columns: 20px 1fr;
  align-items: end;
  margin-bottom: 4px;
}

.year-heatmap-weekday-spacer {
  height: 12px;
}

.year-heatmap-months {
  display: grid;
  column-gap: 4px;
  font-size: 0.72rem;
  color: #7d8f7b;
  font-weight: 700;
  min-width: 730px;
}

.year-heatmap-body {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 6px;
}

.year-heatmap-weekdays {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  row-gap: 3px;
  font-size: 0.72rem;
  color: #9aa89a;
  font-weight: 700;
}

.year-heatmap-grid {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  grid-auto-flow: column;
  grid-auto-columns: 12px;
  gap: 3px;
  min-width: 730px;
}

.heat-cell {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid rgba(120, 145, 109, 0.16);
  background: #e6ebdf;
}

.heat-cell.out-year {
  opacity: 0.34;
}

.heat-cell.today {
  outline: 1px solid #3f6747;
  outline-offset: 1px;
}

.heat-cell.level-1 {
  background: #cfdd9a;
}

.heat-cell.level-2 {
  background: #a9c975;
}

.heat-cell.level-3 {
  background: #6daa4f;
}

.heat-cell.level-4 {
  background: #2d7a2d;
}

.calendar-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.calendar-head h2,
.calendar-head h3 {
  margin: 0;
  color: #3f6747;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.calendar-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.calendar-month-label {
  min-width: 150px;
  text-align: center;
  font-weight: 700;
  color: #3f6747;
}

.calendar-grid {
  margin-top: 10px;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--panel-2);
  padding: 8px;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.calendar-weekday {
  text-align: center;
  font-weight: 700;
  color: #5e7e62;
  font-size: 0.85rem;
  padding: 4px 0;
}

.calendar-cell {
  min-height: 62px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ecebe6;
  padding: 6px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calendar-cell.blank {
  background: transparent;
  border-color: transparent;
}

.calendar-cell.today {
  border-color: #5e885b;
}

.calendar-cell.has-bingo {
  background: #dce5d1;
}

.day-num {
  font-size: 0.82rem;
  font-weight: 700;
  color: #3f6747;
}

.day-count {
  font-size: 0.78rem;
  color: #5e7e62;
  font-weight: 700;
}

.celebration {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  z-index: 999;
}

.celebration.active {
  opacity: 1;
  visibility: visible;
}

.celebration-text {
  position: absolute;
  top: 14vh;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(1.5rem, 4.2vw, 3rem);
  font-weight: 900;
  color: #3f6747;
  text-shadow: 0 5px 18px rgba(0, 0, 0, 0.15);
}

.confetti-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  top: -10vh;
  width: 10px;
  height: 16px;
  opacity: 0.95;
  animation-name: confetti-fall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes confetti-fall {
  from {
    transform: translateY(0) rotate(0deg);
  }
  to {
    transform: translateY(120vh) rotate(720deg);
  }
}

@media (max-width: 860px) {
  .app-shell {
    --ui-scale: 0.86;
    width: calc(min(680px, 94vw) / var(--ui-scale));
  }

  .task-input-row input {
    font-size: 1rem;
    height: 46px;
  }

  .plus-btn {
    width: 46px;
    font-size: 1.6rem;
  }

  .board-shell {
    padding: 8px;
  }

  .board-meta-row {
    flex-direction: column;
    gap: 8px;
  }

  .board-today-pill {
    min-width: 0;
    width: 100%;
    padding: 8px 10px;
    font-size: 0.92rem;
  }

  .board-cell {
    border-radius: 12px;
    min-height: 58px;
    font-size: 0.82rem;
  }

  .landing-actions {
    grid-template-columns: 1fr;
  }

  .calendar-month-label {
    min-width: 110px;
    font-size: 0.85rem;
  }

  .calendar-cell {
    min-height: 52px;
    padding: 4px;
  }

  .calendar-stats-row {
    grid-template-columns: 1fr;
  }

  .day-count {
    font-size: 0.7rem;
  }

  .auth-row {
    justify-content: flex-start;
  }

  .auth-message {
    text-align: left;
  }

  .auth-links {
    justify-content: flex-start;
  }
}