/* =============================================================================
   Language picker modal — KelvinKMS homepage (Safari / iOS friendly)
   1. 基礎樣式  2. 布局樣式  3. 交互樣式  4. 響應式樣式
   ============================================================================= */

/* --- 1. 基礎樣式 --- */
#langToggle.lang-toggle {
  -webkit-appearance: none;
  appearance: none;
  font: inherit;
  color: inherit;
  background: transparent;
  border: none;
  margin: 0;
  display: inline-flex;
  align-items: center;
  line-height: 1.2;
}

.kms-lang-picker-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--kms-statusbar-popup-z, 120100);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right))
    max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  background: rgba(12, 18, 32, 0.55);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  box-sizing: border-box;
  overflow: hidden;
  touch-action: none;
}

.kms-lang-picker-overlay[hidden] {
  display: none !important;
}

.kms-lang-picker-card {
  position: relative;
  width: max-content;
  max-width: min(100%, calc(100vw - 24px));
  max-height: min(92dvh, 560px);
  overflow: hidden;
  border-radius: 18px;
  background: linear-gradient(155deg, rgba(32, 42, 62, 0.96) 0%, rgba(18, 24, 38, 0.98) 100%);
  border: 1px solid rgba(120, 200, 255, 0.22);
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset,
    0 0 40px rgba(0, 234, 211, 0.08);
  color: rgba(235, 242, 255, 0.95);
}

.kms-lang-picker-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(220, 230, 245, 0.9);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
}

.kms-lang-picker-head {
  padding: 22px 48px 8px 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.kms-lang-picker-icon {
  font-size: 26px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.35));
}

.kms-lang-picker-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: rgba(240, 248, 255, 0.96);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

.kms-lang-picker-grid {
  padding: 12px 18px 20px;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.kms-lang-picker-grid .premium-btn.kms-lang-opt {
  width: 100px !important;
  height: 100px !important;
  max-width: 100px !important;
  flex: 0 0 100px !important;
  margin: 0;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
}

.kms-lang-picker-grid .premium-btn.kms-lang-opt .btn-icon {
  display: none !important;
}

.kms-lang-picker-grid .premium-btn.kms-lang-opt > .kms-lang-opt-label,
.kms-lang-picker-grid .premium-btn.kms-lang-opt.is-active > .kms-lang-opt-label,
.kms-lang-picker-grid .premium-btn.kms-lang-opt:active > .kms-lang-opt-label,
.kms-lang-picker-grid .premium-btn.kms-lang-opt:focus-visible > .kms-lang-opt-label,
.kms-lang-picker-grid .premium-btn.kms-lang-opt:hover > .kms-lang-opt-label {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
  font-size: 24px !important;
  line-height: 1.1 !important;
  font-weight: 500 !important;
  font-synthesis: weight;
  letter-spacing: 0.02em;
  color: #00ead3 !important;
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.7), 0 0 5px rgba(0, 234, 211, 0.5) !important;
  white-space: nowrap;
  -webkit-font-smoothing: antialiased;
}

.kms-lang-picker-grid .premium-btn.kms-lang-opt > .kms-lang-opt-label[lang="zh-Hant"],
.kms-lang-picker-grid .premium-btn.kms-lang-opt > .kms-lang-opt-label[lang="zh-Hans"],
.kms-lang-picker-grid .premium-btn.kms-lang-opt.is-active > .kms-lang-opt-label[lang="zh-Hant"],
.kms-lang-picker-grid .premium-btn.kms-lang-opt.is-active > .kms-lang-opt-label[lang="zh-Hans"],
.kms-lang-picker-grid .premium-btn.kms-lang-opt:hover > .kms-lang-opt-label[lang="zh-Hant"],
.kms-lang-picker-grid .premium-btn.kms-lang-opt:hover > .kms-lang-opt-label[lang="zh-Hans"] {
  font-family: var(--kms-font-kai) !important;
  font-weight: 500 !important;
}

.kms-lang-picker-card:lang(zh-Hans) .kms-lang-picker-title,
.kms-lang-picker-card:lang(zh-Hant) .kms-lang-picker-title,
html:lang(zh-Hans) .kms-lang-picker-title,
html:lang(zh-Hant) .kms-lang-picker-title {
  font-family: var(--kms-font-kai) !important;
}

.kms-lang-picker-grid .premium-btn.kms-lang-opt.is-active::before {
  background-image: linear-gradient(135deg, #00f2ff, #0a84ff) !important;
}

.kms-lang-picker-grid .premium-btn.kms-lang-opt.is-active {
  box-shadow: 0 0 18px rgba(0, 242, 255, 0.65), 0 8px 20px rgba(0, 0, 0, 0.35) !important;
}

.kms-lang-opt {
  touch-action: manipulation;
}

/* --- 2. 布局樣式 --- */
body.kms-lang-picker-open {
  overflow: hidden;
}

/* --- 3. 交互樣式 --- */
@media (hover: hover) {
  .kms-lang-picker-close:hover {
    background: rgba(0, 234, 211, 0.15);
    border-color: rgba(0, 234, 211, 0.35);
    color: #e8fffc;
  }

  .kms-lang-picker-grid .premium-btn.kms-lang-opt:hover .kms-lang-opt-label {
    font-weight: 500 !important;
    color: #00ead3 !important;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.7), 0 0 8px rgba(0, 234, 211, 0.65) !important;
  }
}

.kms-lang-picker-close:active {
  transform: scale(0.96);
}

.kms-lang-opt:active {
  transform: scale(0.98);
}


@media (prefers-reduced-motion: reduce) {
  .kms-lang-opt,
  .kms-lang-picker-close {
    transition: none;
  }
}

/* --- 4. 響應式樣式 --- */
@media screen and (max-width: 380px) {
  .kms-lang-picker-grid {
    padding: 12px 14px max(20px, env(safe-area-inset-bottom));
  }
}

@media screen and (max-width: 480px) {
  .kms-lang-picker-grid {
    display: grid;
    grid-template-columns: repeat(2, 100px);
    gap: 20px;
    justify-content: center;
  }

  .kms-lang-picker-title {
    font-size: 1.05rem;
  }

  .kms-lang-picker-card {
    border-radius: 16px;
  }
}