/**
 * name：brand_tokens
 * summary：全站品牌色與圓角 tokens（台芯盾 TaiCoilShiled）
 * purpose：統一導覽列／卡片／按鈕形狀與深色主題，避免各頁自創配色
 * source：platform_home／welcome 既有視覺
 * weight：0
 * direction：neutral
 * used_for：layout_consistency,branding
 * logic：所有靜態頁應引用本檔；卡片固定 --radius-card:18px
 * ai_note：不參與 AI 訊號；僅 UI 一致性
 */
:root {
  --text: #eef6ff;
  --muted: #a9bad0;
  --cyan: #6ee7ff;
  --green: #8dffba;
  --card: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.14);
  --bg-grad:
    radial-gradient(circle at 20% 12%, rgba(110, 231, 255, 0.22), transparent 30%),
    radial-gradient(circle at 82% 20%, rgba(141, 255, 186, 0.12), transparent 26%),
    linear-gradient(135deg, #07101e 0%, #0d1c32 55%, #07111f 100%);
  --radius-card: 18px;
  --radius-btn: 12px;
  --radius-input: 10px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --nav-bg: rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body.brand-shell {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  color: var(--text);
  background: var(--bg-grad);
}

a {
  color: var(--cyan);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.platform-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
}

.platform-nav .nav-brand {
  font-weight: 800;
  color: var(--text);
  margin-right: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 1;
  font-size: clamp(13px, 3.2vw, 16px);
}

/* name：nav-toolbar；summary：導覽右側工具列；purpose：通知＋選單鈕，收合過多連結；source：使用者手機精簡需求；weight：0；direction：neutral；used_for：layout_consistency；logic：下拉面板承載全部導覽連結；ai_note：不參與買賣訊號 */
.platform-nav .nav-toolbar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.platform-nav .nav-menu-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-weight: 800;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: var(--radius-btn);
  cursor: pointer;
  white-space: nowrap;
}

.platform-nav .nav-menu-btn:hover,
.platform-nav .nav-menu-btn[aria-expanded="true"] {
  border-color: rgba(110, 231, 255, 0.45);
  background: rgba(110, 231, 255, 0.12);
}

.platform-nav .nav-menu-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: min(280px, 86vw);
  max-height: min(70vh, 480px);
  overflow-y: auto;
  padding: 8px;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  background: rgba(8, 16, 30, 0.96);
  box-shadow: var(--shadow);
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 120;
}

.platform-nav .nav-menu-panel.is-open {
  display: flex;
}

.platform-nav .nav-menu-item {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
}

.platform-nav .nav-menu-item:hover {
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.platform-nav .nav-menu-divider {
  height: 1px;
  margin: 6px 4px;
  background: rgba(255, 255, 255, 0.12);
}

.platform-nav .nav-menu-section-label {
  padding: 6px 12px 2px;
  font-size: 12px;
  font-weight: 800;
  color: var(--green);
  letter-spacing: 0.02em;
}

.platform-nav a {
  font-size: 14px;
  color: var(--cyan);
}

.platform-nav .bell-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.platform-nav .bell-badge {
  position: absolute;
  top: -8px;
  right: -10px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: #ff6b6b;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  line-height: 18px;
  text-align: center;
  display: none;
}

.platform-nav .bell-badge.show {
  display: inline-block;
}

.brand-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 16px;
}

.brand-btn {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, #6ee7ff, #8dffba);
  color: #06101d;
  font-weight: 800;
  border: 0;
  cursor: pointer;
  text-decoration: none;
}

/* name：brand_form_controls；summary：全站表單元件；purpose：Translator／表單頁 select 可讀對比；source：03p67-2 DBG-015B；weight：0；direction：neutral；used_for：translator_ui,form_consistency；logic：深色底＋--text 字色；ai_note：不參與買賣訊號 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: var(--radius-btn);
  font-weight: 800;
  font-size: 16px;
  border: 0;
  cursor: pointer;
  background: linear-gradient(135deg, #6ee7ff, #8dffba);
  color: #06101d;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--border);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.btn-primary:disabled,
.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.brand-select,
.brand-textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: rgba(8, 16, 30, 0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 10px 12px;
}

.brand-select:focus,
.brand-textarea:focus {
  outline: 2px solid rgba(110, 231, 255, 0.55);
  outline-offset: 2px;
}

.brand-select option {
  color: #06101d;
  background: #eef6ff;
}

.brand-textarea {
  min-height: 100px;
  resize: vertical;
}

.translator-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.translator-hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 4vw, 1.85rem);
}

.translator-sub {
  color: var(--muted);
  margin: 0 0 16px;
  line-height: 1.65;
}

.translator-status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0 16px;
}

.translator-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #888;
  flex-shrink: 0;
}

.translator-dot.ok {
  background: #3ecf8e;
}

.translator-dot.bad {
  background: #f07178;
}

.translator-dot.listening {
  background: #ffd166;
  animation: pulse-dot 1s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

.lang-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  margin: 12px 0;
}

.lang-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
  flex: 1 1 140px;
}

.lang-label {
  font-size: 12px;
  color: var(--muted);
}

.translator-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.translator-panel-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--green);
  margin: 0 0 8px;
}

.translator-result {
  min-height: 80px;
  white-space: pre-wrap;
  line-height: 1.6;
}

.translator-hint {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

.translator-error {
  display: none;
  margin: 12px 0;
  padding: 12px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(240, 113, 120, 0.45);
  background: rgba(240, 113, 120, 0.12);
  color: #ffb4b4;
}

.translator-error.show {
  display: block;
}

#enableAudioBanner {
  display: none;
  margin: 12px 0;
  padding: 12px;
  border-radius: var(--radius-btn);
  background: rgba(255, 180, 0, 0.15);
  border: 1px solid rgba(255, 180, 0, 0.35);
}

#enableAudioBanner.show {
  display: block;
}

.text-mode-toggle {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}