:root {
  --bg: #faf6ef;
  --bg-soft: #fffaf0;
  --ink: #2f2a3d;
  --ink-soft: #5b5470;
  --primary: #7c5fb8;
  --primary-soft: #b8a4d9;
  --accent: #ff9a6b;
  --accent-soft: #ffd4bf;
  --warm: #ffe1b3;
  --line: #e7dfd1;
  --card: #ffffff;
  --shadow: 0 6px 20px rgba(124, 95, 184, 0.12);
  --radius: 18px;
  --base: 22px;
}

[data-fontsize="large"] {
  --base: 26px;
}

[data-fontsize="xlarge"] {
  --base: 30px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-size: var(--base);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  background: linear-gradient(160deg, var(--bg) 0%, #efe6f5 100%);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.6;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  background: var(--bg-soft);
  border-bottom: 2px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 14px;
  color: var(--primary);
  font-size: 0.95em;
  font-weight: 500;
  margin-right: 8px;
  flex-shrink: 0;
  transition: all 0.2s;
}
.nav-back[hidden] { display: none; }
.nav-back:hover {
  border-color: var(--primary-soft);
  background: var(--bg-soft);
}
.nav-back .arrow {
  font-size: 1.2em;
  line-height: 1;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;                          /* nav-back 出現時 brand 自動讓位 */
  min-width: 0;
}
.brand h1 {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-emoji {
  font-size: 1.6em;
}

.brand h1 {
  margin: 0;
  font-size: 1.3em;
  color: var(--primary);
  letter-spacing: 1px;
}

.topbar-actions {
  display: flex;
  gap: 12px;
}

.icon-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 14px;
  color: var(--ink-soft);
  transition: all 0.2s;
}

.icon-btn:hover {
  border-color: var(--primary-soft);
  background: #fff;
}

.icon-btn[aria-pressed="false"] {
  opacity: 0.5;
}

.icon-btn .icon {
  font-size: 1.2em;
}

/* AI 狀態 / brand 標誌（取代 ✨）—— 一個彩色圓點，點擊重新檢查連線 */
.brand-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  user-select: none;
  border-radius: 50%;
  transition: background 0.2s;
  flex-shrink: 0;
}
.brand-status:hover, .brand-status:focus-visible {
  background: rgba(124, 95, 184, 0.1);
  outline: none;
}
.brand-status .dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #c5c0d0;
}
.brand-status.online .dot {
  background: #34c759;
  animation: pulse 2.5s infinite;
}
.brand-status.offline .dot { background: #ffaa33; }
.brand-status.error   .dot { background: #ff5b5b; }
.brand-status.checking .dot { background: #c5c0d0; animation: pulse 1s infinite; }

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0   rgba(52,199,89,0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(52,199,89,0);   }
  100% { box-shadow: 0 0 0 0   rgba(52,199,89,0);   }
}

/* Main / screens */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.screen {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.back-btn {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 1em;
  padding: 8px 0;
  margin-bottom: 16px;
}

.back-btn:hover {
  text-decoration: underline;
}

.screen-title {
  font-size: 1.6em;
  color: var(--primary);
  margin: 0 0 24px;
  text-align: center;
}

/* Home */
.greeting {
  font-size: 1.5em;
  text-align: center;
  margin: 24px 0 40px;
  color: var(--ink);
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.menu-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 36px 24px;
  background: var(--card);
  border: 3px solid transparent;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--ink);
  transition: all 0.2s;
  min-height: 200px;
}

.menu-card:hover, .menu-card:focus {
  transform: translateY(-4px);
  border-color: var(--primary-soft);
  outline: none;
}

.menu-emoji {
  font-size: 3em;
  line-height: 1;
}

.menu-title {
  font-size: 1.3em;
  font-weight: bold;
  color: var(--primary);
}

.menu-sub {
  font-size: 0.9em;
  color: var(--ink-soft);
}

/* Big button */
.big-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 32px;
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  font-size: 1.1em;
  transition: all 0.2s;
}

.big-btn:hover {
  border-color: var(--primary-soft);
  background: var(--bg-soft);
}

.big-btn.primary {
  background: linear-gradient(135deg, var(--primary), #9579cf);
  color: #fff;
  border-color: transparent;
}

.big-btn.primary:hover {
  filter: brightness(1.05);
}

.big-btn.ghost {
  background: transparent;
  border-style: dashed;
}

.big-btn .emoji {
  font-size: 1.3em;
}

/* Tarot */
.tarot-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 24px;
}

.card-back, .card-front {
  width: 220px;
  height: 320px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: transform 0.6s;
}

.card-back {
  background: linear-gradient(135deg, #4a3a7a, #7c5fb8);
  color: #ffe;
  border: 4px solid var(--warm);
}

.card-back-pattern {
  font-size: 1.8em;
  letter-spacing: 4px;
}

.card-front {
  background: linear-gradient(160deg, #fff, var(--bg-soft));
  border: 4px solid var(--accent);
  flex-direction: column;
  gap: 16px;
  padding: 16px;
}

.card-image {
  font-size: 5em;
  line-height: 1;
}

.card-name {
  font-size: 1.1em;
  font-weight: bold;
  color: var(--primary);
  text-align: center;
}

.tarot-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  margin-top: 16px;
}

.tarot-result.hidden {
  display: none;
}

.card-reading {
  max-width: 700px;
  background: var(--card);
  padding: 24px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.reading-headline {
  font-size: 1.3em;
  color: var(--accent);
  margin: 0 0 12px;
  font-weight: bold;
}

.reading-body {
  font-size: 1.05em;
  color: var(--ink);
  margin: 0;
  line-height: 1.8;
}

.card-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* Chat */
.chat-log {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  min-height: 240px;
  max-height: 360px;
  overflow-y: auto;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.chat-bubble {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.chat-bubble.user {
  flex-direction: row-reverse;
}

.chat-bubble .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3em;
  flex-shrink: 0;
}

.chat-bubble.user .avatar {
  background: var(--accent-soft);
}

.chat-bubble .bubble-body {
  display: flex;
  flex-direction: column;
  max-width: 75%;
}

.chat-bubble.user .bubble-body {
  align-items: flex-end;
}

.chat-bubble .sender {
  font-size: 0.72em;
  color: var(--ink-soft);
  margin: 0 4px 4px;
  letter-spacing: 1px;
}

.chat-bubble.ai .sender {
  color: var(--primary);
  font-weight: bold;
}

.chat-bubble .text {
  background: var(--bg-soft);
  padding: 12px 18px;
  border-radius: 14px;
  line-height: 1.6;
}

.chat-bubble.user .text {
  background: var(--warm);
}

.mood-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.mood-btn {
  padding: 14px;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  font-size: 0.95em;
  transition: all 0.2s;
}

.mood-btn:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

.chat-input-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.chat-text {
  flex: 1;
  min-width: 200px;
  padding: 14px 18px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--card);
}

.chat-text:focus {
  outline: none;
  border-color: var(--primary-soft);
}

/* Task */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-left: 6px solid var(--accent);
}

.task-item.done {
  opacity: 0.55;
  border-left-color: var(--primary-soft);
}

.task-item.done .task-text {
  text-decoration: line-through;
}

.task-emoji {
  font-size: 2em;
}

.task-text {
  flex: 1;
  font-size: 1.1em;
}

.task-check {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid var(--primary-soft);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  cursor: pointer;
}

.task-item.done .task-check {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Wish wall */
.wish-compose {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 28px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.wish-text {
  padding: 14px 18px;
  border: 2px solid var(--line);
  border-radius: 12px;
  resize: vertical;
  min-height: 90px;
  background: var(--bg-soft);
}

.wish-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.wishes-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 24px 12px;
  color: var(--ink-soft);
  font-size: 0.95em;
}

.wish-card {
  padding: 18px;
  border-radius: 14px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.06);
  position: relative;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: rotate(var(--rot, 0deg));
}

.wish-card .body {
  font-size: 1em;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.wish-card .signature {
  margin-top: 12px;
  font-size: 0.85em;
  color: var(--ink-soft);
  text-align: right;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #fff;
  padding: 14px 24px;
  border-radius: 14px;
  font-size: 1em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- Responsive ---------- */

/* 平板 / 中尺寸（≤768px） */
@media (max-width: 768px) {
  :root { --base: 20px; }
  .topbar { padding: 12px 16px; gap: 10px; }
  .brand h1 { font-size: 1.05em; letter-spacing: 0.5px; }
  .icon-btn .label { display: none; }      /* 字體/語音只留 emoji */
  .icon-btn { padding: 10px 12px; min-width: 44px; justify-content: center; }
  main { padding: 22px 16px 80px; }
}

/* 手機（≤480px） */
@media (max-width: 480px) {
  :root { --base: 18px; }
  .topbar { padding: 10px 12px; gap: 6px; }
  .brand { gap: 6px; }
  .brand h1 { font-size: 0.95em; }
  .brand-emoji { font-size: 1.3em; }
  /* 手機上返回鈕只顯示箭頭，省空間 */
  .nav-back { padding: 8px 10px; margin-right: 4px; }
  .nav-back .text { display: none; }
  .nav-back .arrow { font-size: 1.3em; }

  .topbar-actions { gap: 4px; }
  .icon-btn { padding: 8px 10px; }
  .icon-btn .icon { font-size: 1.15em; }

  main { padding: 18px 12px 80px; }
  .menu-card { min-height: 140px; padding: 20px 14px; }
  .menu-emoji { font-size: 2.6em; }
  .card-back, .card-front { width: 170px; height: 250px; }

  /* 聊天輸入列：手機上把麥克風按鈕縮成只剩 emoji，textbox 拉滿剩餘空間 */
  .chat-input-row { gap: 6px; flex-wrap: nowrap; }
  .chat-text { flex: 1 1 0; min-width: 0; padding: 12px 14px; }
  #micBtn .btn-text { display: none; }                /* 麥克風只剩 🎤 */
  #micBtn { padding: 14px; min-width: 56px; flex-shrink: 0; }
  #micBtn .emoji { font-size: 1.4em; }
  #chatSendBtn { padding: 14px 18px; flex-shrink: 0; }

  /* 心情按鈕兩欄 */
  .mood-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .mood-btn { padding: 12px 8px; font-size: 0.9em; }

  /* 塔羅卡片動作鈕排成一欄 */
  .card-actions { flex-direction: column; width: 100%; }
  .card-actions .big-btn { width: 100%; justify-content: center; }
}