* {
  box-sizing: border-box;
}

html {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background-color: #061413;
  background: #061413;
}
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
}

body {
  font-family:
    "Hiragino Sans",
    "Yu Gothic",
    "Meiryo",
    system-ui,
    sans-serif;

  color: #d8f5f1;

  background:
    radial-gradient(
      circle at 50% 38%,
      #123a38 0%,
      #0a2322 45%,
      #061413 100%
    );

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  padding: 32px 22px;
  gap: 34px;

  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* ========================================
   星空
======================================== */

.stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #bff5ee;
  animation: twinkle 5s ease-in-out infinite;
}

@keyframes twinkle {
  0%,100% { opacity: .08; transform: scale(.7); }
  50% { opacity: .45; transform: scale(1); }
}

/* ========================================
   キャラクター
======================================== */

.bot {
  position: relative;
  width: 150px;
  height: 150px;
  z-index: 1;
  animation: float 5.2s ease-in-out infinite;
}

@keyframes float {
  0%,100% { transform: translateY(4px); }
  50% { transform: translateY(-8px); }
}

/* ========================================
   ハロー
======================================== */

.halo {
  position: absolute;
  inset: -55px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,209,197,.32) 0%, rgba(79,209,197,0) 68%);
  animation: halo 5.2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes halo {
  0%,100% { transform: scale(.92); opacity: .55; }
  50% { transform: scale(1.08); opacity: .9; }
}

/* ========================================
   顔
======================================== */

.face {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 26%, #7ee6db 0%, #4FD1C5 46%, #2f9e94 100%);
  box-shadow: 0 22px 48px -18px rgba(79,209,197,.7), inset 0 -14px 26px -12px rgba(0,70,64,.5), inset 0 10px 20px -10px rgba(255,255,255,.65);
}

/* ========================================
   目
======================================== */

.eyes {
  position: absolute;
  left: 50%;
  top: 47%;
  display: flex;
  gap: 20px;
  transform: translate(-50%, -50%);
}

.eye {
  width: 18px;
  height: 62px;
  border-radius: 999px;
  background: #fff;
  transform-origin: 50% 50%;
  transition: transform .1s cubic-bezier(.4,0,.2,1);
  box-shadow: 0 0 14px rgba(255,255,255,.55);
}

/* ========================================
   瞬き
======================================== */

.eye.blink {
  transform: scaleY(.08);
}

/* ========================================
   喋っているとき
======================================== */

.bot.speaking .eye {
  animation: talk .5s ease-in-out infinite alternate;
}

.bot.speaking .eye:nth-child(2) {
  animation-delay: .25s;
}

@keyframes talk {
  from { transform: scaleY(.62) scaleX(1); }
  to { transform: scaleY(1.06) scaleX(.94); }
}

/* ========================================
   セリフ
======================================== */

.bubble {
  position: relative;
  z-index: 1;
  min-height: 3.2em;
  max-width: 32ch;
  text-align: center;
  font-size: 17px;
  line-height: 2;
  letter-spacing: .06em;
  font-weight: 300;
  color: #d8f5f1;
  text-shadow: 0 0 22px rgba(79,209,197,.35);
  transition: opacity .4s ease, filter .4s ease;
}

.bubble span {
  display: inline-block;
  opacity: 0;
  animation: fadeUp .7s cubic-bezier(.2,.8,.3,1) forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); filter: blur(5px); }
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.bubble.fade-out {
  opacity: 0;
  filter: blur(5px);
}

.bubble.loading {
  opacity: .75;
  animation: loadingPulse 2s ease-in-out infinite;
}

@keyframes loadingPulse {
  0%,100% { opacity: .45; }
  50% { opacity: 1; }
}

/* ========================================
   入力欄は下で上書き
======================================== */

.composer input::placeholder {
  color: rgba(216,245,241,.35);
  letter-spacing: .1em;
}

.composer input:focus {
  background: rgba(79,209,197,.14);
  border-color: rgba(79,209,197,.7);
  box-shadow: 0 0 26px -6px rgba(79,209,197,.6);
}

.composer input:disabled {
  opacity: .45;
  cursor: wait;
}

/* ========================================
   初回案内
======================================== */

.intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(3, 15, 15, 0.78);
  backdrop-filter: blur(10px);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

.intro-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-card {
  position: relative;
  width: min(520px, 100%);
  padding: 70px 32px 30px;
  border: 1px solid rgba(79, 209, 196, 0.25);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(22, 48, 47, 0.97), rgba(9, 27, 26, 0.97));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), 0 0 40px rgba(79, 209, 196, 0.08);
  color: #e8f5f3;
  transform: translateY(0) scale(1);
  transition: transform 0.45s ease, opacity 0.45s ease;
}

.intro-bot {
  position: absolute;
  top: -35px;
  left: 50%;
  width: 75px;
  height: 75px;
  transform: translateX(-50%);
}

.intro-halo {
  position: absolute;
  inset: -15px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 209, 196, 0.28), rgba(79, 209, 196, 0) 70%);
}

.intro-face {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 26%, #7ee6db 0%, #4FD1C5 46%, #2f9e94 100%);
  box-shadow: 0 22px 48px -18px rgba(79,209,197,.7), inset 0 -14px 26px -12px rgba(0,70,64,.5), inset 0 10px 20px -10px rgba(255,255,255,.65);
}

.intro-eyes {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.intro-eye {
  width: 10px;
  height: 32px;
  border-radius: 999px;
  background: #f4ffff;
  box-shadow: 0 0 8px rgba(255,255,255,0.35);
}

.intro-card h1 {
  margin: 0 0 28px;
  text-align: center;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.intro-text {
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

.intro-text p {
  margin: 0 0 18px;
}

.intro-note {
  margin-top: 26px !important;
  font-size: 12px;
  color: rgba(232, 245, 243, 0.55);
}

#introStart {
  display: block;
  width: 100%;
  margin-top: 28px;
  padding: 13px 20px;
  border: none;
  border-radius: 999px;
  background: #4fd1c4;
  color: #06211f;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

#introStart:hover { transform: translateY(-2px); }
#introStart:active { transform: scale(0.98); }

/* ========================================
   設定パネル
======================================== */

.settings-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  width: min(380px, calc(100vw - 32px));
  max-height: min(82vh, 720px);
  padding: 32px 26px 26px;
  transform: translate(-50%, -50%) scale(0.96);
  border: 1px solid rgba(79, 209, 196, 0.22);
  border-radius: 24px;
  background: rgba(9, 27, 26, 0.98);
  backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), 0 0 40px rgba(79, 209, 196, 0.08);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  z-index: 900;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.settings-panel.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.settings-title {
  margin-bottom: 24px;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
}

.settings-label {
  margin-bottom: 12px;
  font-size: 13px;
  color: rgba(232, 245, 243, 0.6);
}

.model-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.model-option {
  padding: 15px 8px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  background: rgba(255,255,255,0.035);
  color: #e8f5f3;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.model-option strong { display: block; font-size: 16px; }
.model-option span { display: block; margin-top: 4px; font-size: 11px; opacity: 0.55; }

.model-option.selected {
  border-color: #4fd1c4;
  background: rgba(79, 209, 196, 0.12);
  box-shadow: 0 0 18px rgba(79, 209, 196, 0.08);
}

.settings-current {
  margin-top: 14px;
  text-align: center;
  font-size: 12px;
  color: rgba(232, 245, 243, 0.55);
}

.reload-button {
  width: 100%;
  margin-top: 22px;
  padding: 12px;
  border: none;
  border-radius: 999px;
  background: #4fd1c4;
  color: #06211f;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.reload-button:hover { transform: translateY(-2px); }
.reload-button:active { transform: scale(0.98); }

/* ========================================
   マイクボタン
======================================== */

.mic-button {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border: 1px solid rgba(79, 209, 199, 0.35);
  border-radius: 50%;
  background: rgba(15, 45, 45, 0.8);
  color: #4FD1C5;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.mic-button:active { transform: scale(0.92); }

.mic-button.listening {
  background: rgba(79, 209, 199, 0.2);
  box-shadow: 0 0 12px rgba(79, 209, 199, 0.5), 0 0 28px rgba(79, 209, 199, 0.2);
  color: #ffffff;
}


/* ========================================
   設定パネル追加分 - 読み上げ
======================================== */

.settings-divider {
  height: 1px;
  background: rgba(255,255,255,0.08);
  margin: 22px 0;
}

.settings-section {
  margin-bottom: 4px;
}

.settings-note {
  font-size: 11px;
  line-height: 1.7;
  color: rgba(232, 245, 243, 0.5);
  text-align: center;
  word-break: break-all;
}

.voice-select {
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid rgba(79, 209, 196, 0.28);
  background: rgba(255,255,255,0.06);
  color: #e8f5f3;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.voice-select:focus {
  border-color: rgba(79, 209, 196, 0.7);
  background: rgba(79, 209, 196, 0.1);
}

.voice-select option {
  background: #0a2322;
  color: #e8f5f3;
}

.voice-test-button {
  width: 100%;
  margin-top: 12px;
  padding: 10px 16px;
  border: 1px solid rgba(79, 209, 196, 0.32);
  border-radius: 999px;
  background: rgba(79, 209, 196, 0.09);
  color: #4fd1c5;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.voice-test-button:hover {
  background: rgba(79, 209, 196, 0.16);
}

.voice-test-button:active {
  transform: scale(0.97);
}

/* 入力欄 - 正解: テキストボックスの下中央にマイク */
.composer {
  position: fixed;
  left: 50%;
  bottom: calc(32px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(90vw, 500px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  z-index: 10;
}

.composer input {
  width: 100%;
  padding: 16px 22px;
  font-size: 15px;
  font-family: inherit;
  text-align: center;
  color: #e6faf7;
  background: rgba(79,209,197,.08);
  border: 1px solid rgba(79,209,197,.3);
  border-radius: 999px;
  outline: none;
  transition: background .3s, border-color .3s, box-shadow .3s, opacity .3s;
}


.settings-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: rgba(232,245,243,0.7);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
  z-index: 2;
}

.settings-close:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.settings-close:active {
  transform: scale(0.92);
}

/* パネル内のスクロールバーを目立たなく */
.settings-panel::-webkit-scrollbar {
  width: 4px;
}
.settings-panel::-webkit-scrollbar-thumb {
  background: rgba(79,209,196,0.2);
  border-radius: 999px;
}

/* 設定パネルが開いている時は後ろの入力欄とセリフを隠す */
.settings-panel.open ~ .bubble,
.settings-panel.open ~ .composer {
  opacity: 0;
  pointer-events: none;
}