/* 設計值全依專案根目錄 DESIGN.md，不自創。 */
:root {
  --color-bg: #F5F3EF;
  --color-surface: #FFFFFF;
  --color-ink: #1C1917;
  --color-ink-soft: #78716C;
  --color-line: #E7E2DB;
  --color-accent: #E8531F;
  --color-accent-deep: #B93E12;
  --color-ok: #3D7A44;
  --color-player-bg: #141210;

  --shadow-card: 0 1px 3px rgba(28, 25, 23, .06), 0 4px 16px rgba(28, 25, 23, .05);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-chip: 999px;
  --ease: cubic-bezier(.2, .8, .3, 1);
  --dur: 180ms;
  --tabbar-h: 64px;
}

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

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

body {
  font-family: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
}

#view {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 16px calc(var(--tabbar-h) + 24px);
}

.page-head {
  padding: 20px 0 12px;
}

.page-head h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page[hidden] { display: none; }

.page:not([hidden]) .empty {
  animation: enter var(--dur) var(--ease);
}

@keyframes enter {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* 空狀態卡片 */
.empty {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 24px;
  text-align: center;
  margin-top: 24px;
}

.empty-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.empty-title {
  font-size: 17px;
  font-weight: 600;
}

.empty-hint {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 4px;
}

/* 底部四格導覽 */
.tabbar {
  position: fixed;
  inset: auto 0 0;
  height: var(--tabbar-h);
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 480px;
  margin: 0 auto;
  padding-bottom: env(safe-area-inset-bottom);
}

.tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 44px;
  min-width: 44px;
  text-decoration: none;
  color: var(--color-ink-soft);
  font-size: 13px;
  transition: color var(--dur) var(--ease);
}

.tab:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-btn);
}

.tab[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 600;
}

.tab-icon { font-size: 20px; line-height: 1; }

/* ＋開單：橘底白字圓形浮凸 */
.tab-create-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-top: -16px;
  border-radius: var(--radius-chip);
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 24px;
  font-weight: 600;
  line-height: 1;
  box-shadow: var(--shadow-card);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.tab-create:active .tab-create-btn {
  background: var(--color-accent-deep);
  transform: scale(.96);
}

.tab-create[aria-current="page"] .tab-label {
  color: var(--color-accent);
}

.tabbar[hidden] { display: none; }

/* 登入／註冊頁 */
.auth {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.auth[hidden] { display: none; }

.auth-inner {
  width: 100%;
  max-width: 360px;
}

.auth-hero {
  text-align: center;
  margin-bottom: 24px;
}

.auth-logo {
  font-size: 32px;
  margin-bottom: 8px;
}

.auth-hero h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .01em;
}

.auth-sub {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 4px;
}

.auth-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px 20px;
  animation: enter var(--dur) var(--ease);
}

/* 登入／註冊切換：膠囊分段控件 */
.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--color-bg);
  border-radius: var(--radius-chip);
  padding: 4px;
  margin-bottom: 20px;
}

.seg-btn {
  border: 0;
  background: transparent;
  border-radius: var(--radius-chip);
  padding: 8px 0;
  font: inherit;
  font-size: 15px;
  color: var(--color-ink-soft);
  min-height: 36px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.seg-btn[aria-selected="true"] {
  background: var(--color-surface);
  color: var(--color-ink);
  font-weight: 600;
  box-shadow: var(--shadow-card);
}

.seg-btn:focus-visible,
.btn-primary:focus-visible,
.btn-ghost:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* 表單欄位（自繪控件：input／select） */
.field {
  display: block;
  margin-bottom: 16px;
}

.field-label {
  display: block;
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-bottom: 4px;
}

.field input,
.field select {
  width: 100%;
  font: inherit;
  font-size: 15px;
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-btn);
  padding: 10px 12px;
  min-height: 44px;
}

.field input:focus-visible,
.field select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.select-wrap {
  position: relative;
  display: block;
}

.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 36px;
}

.select-wrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-ink-soft);
  border-bottom: 2px solid var(--color-ink-soft);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

.btn-primary {
  width: 100%;
  border: 0;
  background: var(--color-accent);
  color: #FFFFFF;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  padding: 12px;
  min-height: 44px;
  cursor: pointer;
  margin-top: 4px;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.btn-primary:active {
  background: var(--color-accent-deep);
  transform: scale(.98);
}

.auth-error {
  font-size: 13px;
  color: var(--color-accent-deep);
  margin-top: 12px;
  text-align: center;
}

/* 影片庫：訓練集選擇器 → 週次直列 → drill 卡橫滑 */
.page:not([hidden]) .lib-body,
.page:not([hidden]) .drill-body {
  animation: enter var(--dur) var(--ease);
}

.lib-loading {
  font-size: 13px;
  color: var(--color-ink-soft);
  text-align: center;
  padding: 32px 0;
}

.lib-select-wrap {
  display: block;
  margin-bottom: 8px;
}

.lib-select {
  width: 100%;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-btn);
  padding: 10px 36px 10px 12px;
  min-height: 44px;
  appearance: none;
  -webkit-appearance: none;
}

.lib-select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.week {
  margin-top: 20px;
}

.week-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.week-no {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.week-title {
  font-size: 17px;
  font-weight: 700;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.week-meta {
  font-size: 13px;
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

/* 橫滑列：出血到頁緣，留白讓卡片陰影不被裁掉 */
.drill-row {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  margin: 0 -16px;
  padding: 8px 16px 12px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.drill-row::-webkit-scrollbar { display: none; }

.drill-card {
  width: 120px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  scroll-snap-align: start;
  transition: transform var(--dur) var(--ease);
}

.drill-card:active {
  transform: scale(.97);
}

.drill-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.thumb {
  aspect-ratio: 16 / 9;
  background: var(--color-player-bg);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thumb-play {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-chip);
  background: rgba(255, 255, 255, .92);
  color: var(--color-ink);
  font-size: 13px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 2px;
}

.thumb-dur {
  position: absolute;
  left: 6px;
  bottom: 6px;
  font-size: 13px;
  line-height: 1.4;
  color: #FFFFFF;
  background: rgba(20, 18, 16, .7);
  border-radius: var(--radius-chip);
  padding: 0 6px;
  font-variant-numeric: tabular-nums;
}

.drill-card-body {
  padding: 8px 10px 10px;
}

.drill-name-en {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.drill-name-zh {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 每週共通規則 */
.rules-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 16px;
  margin-top: 24px;
}

.rules-title {
  font-size: 15px;
  font-weight: 700;
}

.rules-list {
  margin-top: 8px;
  padding-left: 20px;
}

.rules-list li {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 4px;
}

/* drill 佔位頁（播放功能 06 票補上） */
.drill-head {
  display: flex;
  align-items: center;
}

.back {
  font-size: 15px;
  color: var(--color-ink-soft);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.back:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-btn);
}

.drill-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--radius-card);
  margin-bottom: 12px;
}

.drill-detail {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px 16px;
}

.drill-detail-week {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 600;
}

.drill-detail-en {
  font-size: 20px;
  font-weight: 700;
  margin-top: 4px;
}

.drill-detail-zh {
  font-size: 15px;
  color: var(--color-ink-soft);
}

.drill-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.drill-desc {
  font-size: 15px;
  margin-top: 12px;
}

.drill-note {
  font-size: 13px;
  color: var(--color-ink-soft);
  text-align: center;
  margin-top: 16px;
}

/* 「我的」個人卡 */
.profile {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: enter var(--dur) var(--ease);
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-chip);
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.profile-main {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.profile-name {
  font-size: 17px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chip {
  font-size: 13px;
  color: var(--color-ink-soft);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-chip);
  padding: 1px 8px;
  flex-shrink: 0;
}

.btn-ghost {
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-ink-soft);
  font: inherit;
  font-size: 13px;
  border-radius: var(--radius-btn);
  padding: 8px 14px;
  min-height: 36px;
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.btn-ghost:active {
  color: var(--color-ink);
  border-color: var(--color-ink-soft);
}