/* home.css — 三模式整合主頁元件
   依賴：tokens.css → chrome.css → chat.css
   scope：body.home
   不含：桌機版面約束（→ layouts/home.css） */

/* ── LAB 格子 token（mobile-first） ── */
.home {
  --play-col-gap: 14px;
  --play-row-gap: 12px;
  --play-row-h:   56px;
  --play-grass:   #7CA96A;
}
@media (min-width: 1024px) {
  .home {
    --play-col-gap: 20px;
    --play-row-gap: 16px;
    --play-row-h:   64px;
  }
}

/* ══════════════════════════════════════
   SWIPE：3-panel 覆蓋 chrome.css 2-panel
   panel 順序：LOG(0) | LOOK(1) | LAB(2)
   ══════════════════════════════════════ */
.home.lab-enabled[data-mode="log"]  { --panel-idx: 0; }
.home.lab-enabled[data-mode="look"] { --panel-idx: 1; }
.home.lab-enabled[data-mode="lab"]  { --panel-idx: 2; }

.home.lab-enabled .swipe-track {
  width: 300%;
  /* !important 覆蓋 chrome.css 的 .at-log .swipe-track { transform: translateX(0) } */
  transform: translateX(calc(var(--panel-idx, 1) * -33.333%)) !important;
}
.home.lab-enabled .swipe-page { width: 33.333%; }

.home.lab-enabled .input-panels {
  width: 300%;
  transform: translateX(calc(var(--panel-idx, 1) * -33.333%)) !important;
}
.home.lab-enabled .input-panel { width: 33.333%; }

/* 無 lab-enabled flag：LAB 那格移出 flex 流（保留 DOM，之後接回） */
.home:not(.lab-enabled) .page-lab,
.home:not(.lab-enabled) .lab-input { display: none; }

/* ══════════════════════════════════════
   MODE-STRIPE：隨模式改色
   ══════════════════════════════════════ */
.home[data-mode="log"]  .mode-stripe { background: var(--signal); }
.home[data-mode="look"] .mode-stripe,
.home[data-mode="lab"]  .mode-stripe { background: var(--teal-ink); }

.home .mode-label { display: none; }

/* ══════════════════════════════════════
   APP-BTN：深淺切換色塊（右推，尺寸同 send 按鈕）
   深色模式：黑多白少（左 75% 深，右 25% 淺）
   淺色模式：白多黑少（左 75% 淺，右 25% 深）
   ══════════════════════════════════════ */
.home .app-btn {
  width: 40px; height: 28px; padding: 4px; cursor: pointer; display: flex;
  background: var(--paper-2); border: 1px solid var(--ink-3); border-radius: var(--r-xs);
  transition: border-color .2s;
  flex-shrink: 0; margin-left: auto;
  -webkit-tap-highlight-color: transparent;
}
.home .app-btn:hover { border-color: var(--signal); }
.home .app-btn .blk { display: flex; flex: 1; overflow: hidden; border-radius: 1px; }
.home .app-btn .a { background: var(--sw-d); flex: 0 0 64%; transition: flex-basis .3s; }
.home .app-btn .b { background: var(--sw-l); flex: 1; transition: flex-basis .3s; }
:root[data-appearance="light"] .home .app-btn .a { flex: 0 0 36%; }

/* ══════════════════════════════════════
   PHASE-ROW（LAB 草稿進度）
   ══════════════════════════════════════ */
.home .phase-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 12px;
  flex-shrink: 0;
}
/* hidden 屬性 + display:flex 衝突修正 */
.home .phase-row[hidden] { display: none !important; }

.home .phase-label {
  font-family: var(--mono);
  font-size: var(--t--2);
  letter-spacing: 2px;
  color: var(--play-grass);
  white-space: nowrap;
}
.home .phase-track {
  flex: 1;
  height: 2px;
  background: var(--paper-2);
  position: relative;
  overflow: hidden;
}
.home .phase-fill {
  position: absolute;
  inset: 0 100% 0 0;
  background: var(--play-grass);
  transition: right .4s;
}
.home .phase-count {
  font-family: var(--mono);
  font-size: var(--t--2);
  color: var(--ink-3);
  white-space: nowrap;
}

/* ══════════════════════════════════════
   INPUT-LABEL（取代 kb-badge）
   ══════════════════════════════════════ */
.home .kb-badge { display: none; }

.input-label {
  font-family: var(--logo);
  font-size: var(--k-1);
  font-weight: 800;
  letter-spacing: -.02em;
  text-transform: uppercase;
  flex-shrink: 0;
  align-self: flex-end;
  padding-bottom: 6px;
}
.home .log-input  .input-label { color: var(--signal); }
.home .look-input .input-label { color: var(--teal-ink); }
.home .lab-input  .input-label { color: var(--teal-ink); }

@keyframes caret-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
.input-caret {
  font-family: var(--mono);
  font-size: var(--u-0);
  font-weight: 400;
  flex-shrink: 0;
  align-self: flex-end;
  padding-bottom: 6px;
  animation: caret-blink 1s step-end infinite;
  visibility: hidden;
}
.home[data-mode="log"]  .log-input  .input-caret { visibility: visible; color: var(--signal); }
.home[data-mode="look"] .look-input .input-caret { visibility: visible; color: var(--teal-ink); }
.home[data-mode="lab"]  .lab-input  .input-caret { visibility: visible; color: var(--teal-ink); }

/* .kq-submit 顏色由 chrome.css 統一處理（.look-input/.lab-input 覆寫已在 chrome.css 定義）*/

/* lab-input：8px 水平 padding（對齊 play-actions） */
.home .lab-input {
  border-top: 2px solid var(--teal-ink);
  padding-left: 8px;
  padding-right: 8px;
}

/* ══════════════════════════════════════
   PAGE-LAB：overflow hidden（field 自己滾動）
   手機：play-actions 吸底，不擠壓 swipe-wrap 高度
   ══════════════════════════════════════ */
.home .page-lab { overflow: hidden; }

/* Mobile LAB：play-actions 和 input-stack 固定在視窗底部
   讓畫布從 logo 下方延伸到底、輸入框浮動在最下層 */
@media (max-width: 1023px) {
  .home[data-mode="lab"] .play-actions {
    position: sticky;
    bottom: 0;
    z-index: 10;
    background: var(--paper);
  }
  .home[data-mode="lab"] .input-stack {
    position: sticky;
    bottom: 0;
    z-index: 11;
    background: var(--paper);
  }
}

/* ══════════════════════════════════════
   LAB FIELD + EVA CARDS
   ══════════════════════════════════════ */
.home .field {
  position: absolute;
  inset: 12px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: var(--play-row-h);
  column-gap: var(--play-col-gap);
  row-gap: var(--play-row-gap);
  grid-auto-flow: row dense;
  align-content: start;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
}
.home .field::-webkit-scrollbar { display: none; }

@media (min-width: 1024px) {
  .home .field { grid-template-columns: repeat(12, 1fr); }
}

@keyframes evaIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
.home .eva {
  position: relative;
  min-width: 0;
  background: color-mix(in srgb, var(--ink) 4%, transparent);
  border: 1px solid color-mix(in srgb, var(--ink-3) 30%, transparent);
  animation: evaIn .45s cubic-bezier(.2, .7, .2, 1);
}
.home .eva svg { display: block; width: 100%; height: 100%; }
.home .eva.anchor { border-left: 2px solid var(--teal-2); }

/* ══════════════════════════════════════
   PLAY-ACTIONS（整理 / 彙整）
   ══════════════════════════════════════ */
.home .play-actions {
  display: flex;
  gap: 8px;
  padding: 8px;
  justify-content: flex-end;
  flex-shrink: 0;
}
.home .play-actions[hidden] { display: none !important; }

.home .play-btn {
  font-family: var(--mono);
  font-size: var(--t--1);
  letter-spacing: 1px;
  padding: 8px 18px;
  border: 1px solid var(--ink-3);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
}
.home .play-btn:hover        { border-color: var(--ink-2); color: var(--ink); }
.home .play-btn:disabled     { opacity: .4; cursor: not-allowed; }
.home .play-btn--primary     { border-color: var(--signal);   color: var(--signal); }
.home .play-btn--primary:hover { background: var(--signal);   color: var(--paper); }
.home .play-btn--tidy        { border-color: var(--teal-ink); color: var(--teal-ink); }
.home .play-btn--tidy:hover  { background: var(--teal-ink);   color: var(--paper); }

/* ══════════════════════════════════════
   PARA-TRAY / CHIP / PREVIEW
   ══════════════════════════════════════ */
.home .para-tray {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 20;
  pointer-events: none;
}

@keyframes chipIn {
  from { opacity: 0; transform: scale(.3) translateX(20px); }
  to   { opacity: 1; transform: none; }
}
.home .para-chip {
  font-family: var(--mono);
  font-size: var(--t--2);
  letter-spacing: 1px;
  padding: 5px 14px;
  border: 1px solid var(--teal-ink);
  background: color-mix(in srgb, var(--teal-ink) 12%, transparent);
  color: var(--teal-ink);
  cursor: pointer;
  pointer-events: auto;
  animation: chipIn .3s cubic-bezier(.2, .7, .2, 1) both;
}
.home .para-chip:hover {
  background: color-mix(in srgb, var(--teal-ink) 25%, transparent);
}

.home .para-preview {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  z-index: 30;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 12px;
}
.home .para-preview[hidden] { display: none !important; }

.home .para-preview-card {
  background: var(--paper-2);
  border: 1px solid color-mix(in srgb, var(--ink-3) 30%, transparent);
  border-top: 2px solid var(--teal-ink);
  padding: 16px 20px;
  max-width: 360px;
  width: 100%;
}
.home .para-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.home .para-preview-num {
  font-family: var(--mono);
  font-size: var(--t--2);
  letter-spacing: 2px;
  color: var(--teal-ink);
}
.home .para-preview-close {
  font-family: var(--mono);
  font-size: var(--u-0);
  background: transparent;
  border: none;
  color: var(--ink-3);
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.home .para-preview-close:hover { color: var(--ink); }
.home .para-preview-body {
  font-family: var(--sans);
  font-size: var(--u-0);
  line-height: var(--lh-u);
  color: var(--ink-2);
  white-space: pre-wrap;
  margin: 0;
}

/* ══════════════════════════════════════
   EDGE-NAV：手機邊緣模式切換（LOG ⟷ LOOK）
   桌機 LOG|LOOK 並排，不需要；min-width:1024 全隱藏
   ══════════════════════════════════════ */
.home .lang-tabs { display: flex; align-items: center; gap: 10px; }
.home .lang-tab {
  font-family: var(--mono); font-size: var(--t--1); font-weight: 700;
  letter-spacing: .06em; line-height: 1;
  background: none; border: none; color: var(--ink-3);
  cursor: pointer; padding: 4px 2px; transition: color .25s, background .25s;
  border-radius: var(--r-xs); -webkit-tap-highlight-color: transparent;
}
.home .lang-tab:hover { color: var(--ink-2); }
.home .lang-tab.active { background: var(--signal); color: var(--paper); padding: 4px 9px; }

@media (max-width: 1023px) {
  /* ── EDGE-NAV：kq-submit 方塊風格，浮對話右下（§14.11 容器風格，glyph 用 chevron）── */
  .home .edge-nav {
    position: absolute;           /* 錨定 .swipe-wrap（relative）；底緣 = 橘線 */
    right: var(--gutter);         /* 16px，= .input-panel padding-right，與 send 右緣對齊 */
    bottom: var(--baseline);      /* 8px，= .input-panel padding-top，與 send 等距橘線（上下各一個 baseline）*/
    z-index: 40;
    display: none;                /* 預設隱藏；下方 booted 規則一次開一顆 */
    align-items: center; justify-content: center;
    width: 40px; height: 40px; padding: 0;     /* 同 send 尺寸 */
    border: none; border-radius: var(--r-0);   /* 銳角工具態，同 send */
    color: var(--paper);
    cursor: pointer; -webkit-tap-highlight-color: transparent;
    transition: opacity .15s ease;
  }
  .home .edge-nav svg { width: 22px; height: 22px; }
  .home .edge-nav:hover  { opacity: .85; }
  .home .edge-nav:active { opacity: .7; }

  /* 背景跟隨當前模式，與當下 send 同色：LOG=signal、LOOK=teal */
  .home[data-mode="log"]  .edge-nav { background: var(--signal); }
  .home[data-mode="look"] .edge-nav { background: var(--teal-ink); }

  /* 一次一顆：booted 後，LOG 顯示去 LOOK；LOOK 顯示去 LOG */
  .home.booted[data-mode="log"]  .edge-nav--look { display: inline-flex; }
  .home.booted[data-mode="look"] .edge-nav--log  { display: inline-flex; }

  /* 鍵盤開啟時隱藏（沿用既有行為）*/
  .home.keyboard-open .edge-nav { display: none !important; }
}
@media (min-width: 1024px) { .home .edge-nav { display: none !important; } }

/* ══════════════════════════════════════
   鍵盤 VV 架構（原 home-v3.css，技術債 #52 結案）
   ══════════════════════════════════════ */

@media (max-width: 1023px) {

  /* 1) 禁止 layout viewport 橡皮筋 —— 消除底部空白的關鍵 */
  html:has(body.home),
  body.home {
    overscroll-behavior: none;
  }

  /* 2) app-shell（= body）改 fixed，高度/頂端跟隨 visualViewport
        特異性 0,2,1（body.app-shell.home）> chrome.css 的 0,1,1（body.app-shell）→ 穩定覆蓋 */
  body.app-shell.home {
    position: fixed;
    top:   var(--app-top, 0px);
    left:  0;
    right: 0;
    height: var(--app-h, 100%);
    /* 覆蓋 chrome.css 手機段：position:absolute; top:0; height:100% */
  }

  /* 3) 對話捲動不外漏（保護 column-reverse 內部捲動，避免冒泡成整頁橡皮筋） */
  .home .swipe-page { overscroll-behavior: contain; }

  /* 4) v3 驗收 #1 要 masthead 維持可見 → 取消 chrome.css 的鍵盤收起 masthead */
  body.home.keyboard-open .masthead {
    margin-top: 0;
    opacity: 1;
    pointer-events: auto;
  }
}

/* ── onboarding tour tip ── */
.kq-tour-tip {
  position: fixed;
  z-index: 300;
  background: var(--signal);
  color: var(--paper);
  font-family: var(--sans);
  font-size: var(--t--1);
  line-height: 24px;
  padding: 8px 14px;
  border-radius: var(--r-xs);
  white-space: nowrap;
  pointer-events: auto;
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s ease;
}

.kq-tour-tip--in {
  opacity: 1;
  animation: tour-bob 2.4s ease-in-out infinite;
}

.kq-tour-tip--out {
  opacity: 0;
  animation: none;
}

/* arrow pointing up (tip is below the target element) */
.kq-tour-tip[data-arrow="up"]::before {
  content: '';
  position: absolute;
  top: -6px;
  left: var(--kq-arrow-x, 50%);
  transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--signal);
}

/* arrow pointing down (tip is above the target element) */
.kq-tour-tip[data-arrow="down"]::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: var(--kq-arrow-x, 50%);
  transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--signal);
}

@keyframes tour-bob {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-4px); }
}

@media (prefers-reduced-motion: reduce) {
  .kq-tour-tip { transition: none; }
  .kq-tour-tip--in { animation: none; }
}

/* ── 真機調校開關（若 device test 發現 shell 位置偏移時用）──
   iOS position:fixed 的定位基準（layout vs visual viewport）會因版本而異：
   · 預設假設 fixed 相對 layout viewport → top 需補 offsetTop（上方 var(--app-top) 即此）
   · 若實測 shell 反而被多推一截 → 代表該機 fixed 已相對 visual viewport，
     此時把 top 改回 0（不補 offsetTop）。改法：註解掉上面 top 那行、改下行：
   body.app-shell.home { top: 0; }
   （兩種都先在 kb-test.html 方案 F 上各測一次再定。） */