:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1c2530;
  --muted: #7b8896;
  --line: #e6eaee;
  --accent: #1f8a5d;
  --accent-soft: #e6f4ec;
  --warn: #b4451f;
  --warn-soft: #fdeee7;
  --shadow: 0 1px 2px rgba(20, 35, 50, 0.06), 0 8px 24px rgba(20, 35, 50, 0.06);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d;
    --card: #1c2228;
    --text: #eef2f6;
    --muted: #93a1af;
    --line: #2a3138;
    --accent: #37a877;
    --accent-soft: #1f3129;
    --warn: #e0836a;
    --warn-soft: #33221d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 28px rgba(0, 0, 0, 0.28);
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  padding: env(safe-area-inset-top) 0 calc(24px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px 8px;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 13px;
}

/* 顶部状态条 */
.banner {
  background: var(--warn-soft);
  color: var(--warn);
  padding: 10px 16px;
  display: grid;
  gap: 2px;
  font-size: 13px;
  text-align: center;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.5px;
}

.sync-state {
  font-size: 12px;
  color: var(--muted);
}

.sync-state.ok {
  color: var(--accent);
}

.sync-state.warn {
  color: var(--warn);
}

/* 登录注册 */
.auth-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 20px;
  max-width: 420px;
  margin: 6vh auto 0;
}

.auth-card h1 {
  margin: 0 0 4px;
  font-size: 26px;
}

.auth-card .sub {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
}

.tabs {
  display: flex;
  gap: 6px;
  background: var(--bg);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 16px;
}

.tab {
  flex: 1;
  border: none;
  background: transparent;
  border-radius: 9px;
  padding: 9px 0;
  font-size: 15px;
  color: var(--muted);
}

.tab.active {
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  box-shadow: var(--shadow);
}

.field-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 12px 0 4px;
}

#auth-form input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
}

#auth-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.primary {
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.primary.block {
  width: 100%;
  margin-top: 18px;
}

.primary:disabled {
  opacity: 0.6;
}

.primary.danger {
  background: var(--warn);
}

.ghost {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 12px;
  padding: 11px 16px;
  font-size: 15px;
}

.link {
  border: none;
  background: transparent;
  color: var(--accent);
  padding: 0;
  font-size: 13px;
  text-decoration: underline;
}

.link-btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
}

/* 主界面 */
.head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.head h1 {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0.5px;
}

.sub {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.progress {
  text-align: right;
  white-space: nowrap;
}

.progress-num {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--accent);
}

.progress-num .slash {
  color: var(--muted);
  font-weight: 400;
  margin: 0 2px;
}

.progress-text {
  font-size: 12px;
  color: var(--muted);
}

.bar {
  height: 6px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
  margin: 14px 0 0;
}

.bar-fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.cheer {
  margin: 12px 0 0;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 14px;
}

.habits {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.check {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: transparent;
  color: transparent;
  font-size: 22px;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.check:active {
  transform: scale(0.94);
}

.card.done .check {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.card-main {
  flex: 1 1 auto;
  min-width: 0;
}

.card-top {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon {
  font-size: 20px;
  width: 26px;
  text-align: center;
  flex: 0 0 auto;
}

.name {
  font-size: 18px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 auto;
}

.card.done .name {
  color: var(--muted);
}

.menu-btn {
  flex: 0 0 auto;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 8px;
}

.menu-btn:hover {
  background: var(--line);
}

.stats {
  margin: 4px 0 0 34px;
  color: var(--muted);
  font-size: 13px;
}

.stats b {
  color: var(--text);
  font-weight: 600;
}

.stats .today-pending {
  color: var(--accent);
}

.stats .bell {
  color: var(--muted);
}

.days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin: 10px 0 0 34px;
}

.day {
  border: none;
  background: transparent;
  padding: 4px 0 2px;
  border-radius: 10px;
  display: grid;
  justify-items: center;
  gap: 3px;
}

.day .dot {
  width: 100%;
  max-width: 34px;
  height: 26px;
  border-radius: 8px;
  background: var(--line);
  display: grid;
  place-items: center;
  color: transparent;
  font-size: 13px;
  transition: background 0.15s ease;
}

.day.done .dot {
  background: var(--accent);
  color: #fff;
}

.day.today .dot {
  box-shadow: inset 0 0 0 2px var(--accent);
}

.day.today.done .dot {
  box-shadow: none;
}

.day .lab {
  font-size: 11px;
  color: var(--muted);
}

.day.today .lab {
  color: var(--accent);
  font-weight: 600;
}

.card-actions {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0 34px;
}

.card.open .card-actions {
  display: flex;
}

.card-actions button {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 10px;
  padding: 7px 12px;
  font-size: 13px;
  color: var(--text);
}

.card-actions button.danger {
  color: var(--warn);
  border-color: var(--warn-soft);
  background: var(--warn-soft);
}

.empty {
  margin: 22px 0 0;
  padding: 26px 18px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  line-height: 1.8;
}

.add {
  margin: 22px 0 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

#add-form {
  display: flex;
  gap: 10px;
}

#add-input {
  flex: 1 1 auto;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
}

#add-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
}

.chip {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 999px;
  padding: 10px 15px;
  font-size: 14px;
  color: var(--text);
}

.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* 设置 */
.foot {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.foot summary {
  cursor: pointer;
  padding: 10px 0;
  font-size: 14px;
}

.settings-body {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 14px 12px;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.setting-row:last-of-type {
  border-bottom: none;
}

.setting-row.wrap-row {
  flex-wrap: wrap;
}

.setting-label {
  color: var(--text);
}

.row-buttons {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.setting-row input[type="time"],
.setting-row input[type="text"] {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 10px;
  padding: 7px 10px;
  font-size: 14px;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
}

/* 弹窗 */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(12, 18, 24, 0.45);
  display: grid;
  place-items: center;
  padding: 18px;
  z-index: 20;
}

.modal {
  width: 100%;
  max-width: 380px;
  max-height: 88vh;
  overflow: auto;
  background: var(--card);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
}

.modal.wide {
  max-width: 440px;
}

.modal h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.modal-text {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
}

#modal-input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
  margin-bottom: 12px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 14px;
}

.radio {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0 4px;
  font-size: 15px;
}

.radio input {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
}

.sub-field {
  margin: 0 0 6px 30px;
  padding: 8px 0 0;
  display: grid;
  gap: 8px;
}

.sub-field input[type="text"],
.sub-field input[type="number"],
.sub-field input[type="time"] {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
}

.sub-field input[type="number"] {
  width: 72px;
}

.sub-field .row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
}

.preview {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: #1c2530;
  color: #fff;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 14px;
  max-width: 88vw;
  z-index: 30;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

@media (min-width: 620px) {
  .wrap {
    padding: 36px 24px 12px;
  }

  .head h1 {
    font-size: 30px;
  }

  .card {
    padding: 16px 20px;
  }
}