/* ==========================================
   Bistro TOMOSHIBI — 口コミ生成
   RESET & BASE
========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Light mode（デフォルト：昼のビストロ／紙のメニュー） ── */
:root,
[data-theme="light"] {
  --bg:          #f7f1e6;
  --bg-alt:      #fdfaf4;
  --bg-card:     rgba(255, 252, 246, 0.72);
  --accent:      #b5533a;   /* テラコッタ */
  --accent-deep: #8f3d28;
  --accent-soft: rgba(181, 83, 58, 0.10);
  --accent-line: rgba(181, 83, 58, 0.26);
  --brass:       #a9812f;   /* 真鍮 */
  --text:        #2c2118;
  --text-sub:    #6a5748;
  --text-muted:  #97836f;
  --border:      rgba(120, 88, 60, 0.16);
  --radius:      10px;
  --success:     #4a7d4e;
  --shadow:      0 18px 40px -24px rgba(80, 50, 30, 0.45);
  --steam:       rgba(181, 130, 80, 0.16);
  --paper-dot:   rgba(120, 88, 60, 0.055);
}

/* ── Dark mode（夜のビストロ／キャンドルの灯り） ── */
[data-theme="dark"] {
  --bg:          #171210;
  --bg-alt:      #1f1815;
  --bg-card:     rgba(43, 33, 28, 0.62);
  --accent:      #e08a63;
  --accent-deep: #f0a582;
  --accent-soft: rgba(224, 138, 99, 0.12);
  --accent-line: rgba(224, 138, 99, 0.30);
  --brass:       #d5aa5c;
  --text:        #f0e6d8;
  --text-sub:    #bda893;
  --text-muted:  #8d7a68;
  --border:      rgba(224, 178, 130, 0.16);
  --success:     #86b98c;
  --shadow:      0 22px 50px -26px rgba(0, 0, 0, 0.85);
  --steam:       rgba(232, 190, 140, 0.10);
  --paper-dot:   rgba(232, 200, 160, 0.035);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  background-color: var(--bg);
  /* リネンのような紙質感 */
  background-image:
    radial-gradient(var(--paper-dot) 1px, transparent 1px),
    radial-gradient(var(--paper-dot) 1px, transparent 1px);
  background-size: 22px 22px, 22px 22px;
  background-position: 0 0, 11px 11px;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.85;
  letter-spacing: 0.04em;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

/* ==========================================
   背景：立ちのぼる湯気
========================================== */
.steam-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.st {
  position: absolute;
  bottom: -18%;
  border-radius: 50%;
  filter: blur(46px);
  opacity: 0;
  background: radial-gradient(ellipse at center, var(--steam) 0%, transparent 68%);
  animation: steamRise var(--dur, 20s) ease-in-out var(--delay, 0s) infinite;
  transform-origin: center bottom;
}

.st1 { width: 300px; height: 460px; left: 6%;  --dur: 22s; --delay: 0s;   --drift: 34px; }
.st2 { width: 240px; height: 380px; left: 26%; --dur: 27s; --delay: 4s;   --drift: -42px; }
.st3 { width: 360px; height: 540px; left: 46%; --dur: 24s; --delay: 8s;   --drift: 52px; }
.st4 { width: 210px; height: 330px; left: 66%; --dur: 30s; --delay: 2s;   --drift: -28px; }
.st5 { width: 300px; height: 450px; left: 80%; --dur: 21s; --delay: 11s;  --drift: 44px; }
.st6 { width: 260px; height: 400px; left: 16%; --dur: 32s; --delay: 15s;  --drift: -36px; }

@keyframes steamRise {
  0%   { transform: translateY(0) translateX(0) scale(0.6) rotate(-3deg); opacity: 0; }
  10%  { opacity: 1; }
  50%  { transform: translateY(-55vh) translateX(var(--drift, 30px)) scale(1.3) rotate(4deg); opacity: 0.75; }
  85%  { opacity: 0.2; }
  100% { transform: translateY(-112vh) translateX(calc(var(--drift, 30px) * 1.6)) scale(1.8) rotate(-2deg); opacity: 0; }
}

/* ==========================================
   THEME TOGGLE
========================================== */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--accent);
  font-size: 1rem;
  width: 40px;
  height: 40px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.theme-toggle:hover {
  background: var(--accent-soft);
  border-color: var(--accent-line);
}

/* ==========================================
   SCREENS
========================================== */
.screen        { display: none; min-height: 100vh; position: relative; z-index: 1; }
.screen.active { display: block; animation: fadeUp 0.5s ease both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.center-content {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

/* ==========================================
   CONTAINER
========================================== */
.container {
  max-width: 660px;
  margin: 0 auto;
  padding: 72px 28px 110px;
}

/* ==========================================
   HEADER
========================================== */
.header {
  text-align: center;
  margin-bottom: 56px;
}

.header-eyebrow {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 0.8rem;
  letter-spacing: 0.42em;
  color: var(--accent);
  margin-bottom: 22px;
  text-transform: uppercase;
  opacity: 0.85;
}

.header-icon {
  color: var(--accent);
  margin-bottom: 18px;
  line-height: 1;
  display: inline-block;
  animation: dishFloat 5s ease-in-out infinite;
}

@keyframes dishFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-5px); }
}

.dish-steam {
  animation: wisp 3.4s ease-in-out infinite;
  transform-origin: center bottom;
}
.dish-steam.s-b { animation-delay: 0.5s; }
.dish-steam.s-c { animation-delay: 1s; }

@keyframes wisp {
  0%, 100% { opacity: 0.15; transform: translateY(2px) scaleY(0.9); }
  50%      { opacity: 0.6;  transform: translateY(-3px) scaleY(1.1); }
}

.title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem;
  font-weight: 400;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: 0.14em;
}

.title-sm {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.14em;
}

.title em {
  font-family: 'Noto Serif JP', serif;
  font-style: normal;
  font-weight: 300;
  font-size: 0.74rem;
  color: var(--text-sub);
  letter-spacing: 0.24em;
  display: block;
  margin-top: 12px;
}

/* メニューの罫線風（中央にひし形） */
.header-rule {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 190px;
  margin: 26px auto;
  color: var(--accent);
}

.header-rule::before,
.header-rule::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent-line), transparent);
}

.header-rule span {
  font-size: 0.5rem;
  opacity: 0.7;
  line-height: 1;
}

.header-desc {
  font-size: 0.84rem;
  color: var(--text-sub);
  line-height: 2.3;
  letter-spacing: 0.1em;
}

/* ==========================================
   QUESTION CARDS（メニューカード風）
========================================== */
.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  margin-bottom: 16px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
  transition: border-color 0.25s;
}

.question-card:hover { border-color: var(--accent-line); }

.question-label {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 20px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  letter-spacing: 0.09em;
}

.q-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  flex-shrink: 0;
  border: 1px solid var(--accent-line);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  background: var(--accent-soft);
}

.optional-tag {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.14em;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 10px;
  margin-left: 4px;
}

/* ==========================================
   OPTIONS GRID
========================================== */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
  gap: 9px;
}

.option-btn { cursor: pointer; display: block; }
.option-btn input { display: none; }

.option-btn span {
  display: block;
  padding: 13px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: 'Noto Serif JP', serif;
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--text-sub);
  letter-spacing: 0.08em;
  transition: all 0.2s ease;
  text-align: center;
  cursor: pointer;
  user-select: none;
}

.option-btn span:hover {
  border-color: var(--accent-line);
  color: var(--text);
  transform: translateY(-1px);
}

.option-btn input[type="radio"]:checked + span,
.option-btn input[type="checkbox"]:checked + span {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff8f0;
  font-weight: 400;
  box-shadow: 0 6px 16px -8px var(--accent);
}

/* チェックボックスは選択時に印を添える */
.checkbox-btn input[type="checkbox"]:checked + span::before {
  content: '✓ ';
  font-size: 0.75em;
}

/* ==========================================
   TEXTAREA
========================================== */
textarea {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: 'Noto Serif JP', serif;
  font-size: 1rem; /* 16px未満だとiOSが自動ズームするため1rem固定 */
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.06em;
  padding: 16px 18px;
  resize: vertical;
  transition: border-color 0.25s, box-shadow 0.25s;
  outline: none;
}

textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

textarea::placeholder {
  color: var(--text-muted);
  font-size: 0.8rem;
  opacity: 0.85;
}

/* ==========================================
   BUTTONS
========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-family: 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: 0.84rem;
  letter-spacing: 0.24em;
  padding: 17px 32px;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fff8f0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 14px 30px -16px var(--accent);
}

[data-theme="dark"] .btn-primary { color: #201512; }

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, transparent 55%);
  pointer-events: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px -14px var(--accent);
}

.btn-primary:active { transform: translateY(0); }

.btn-large {
  width: 100%;
  font-size: 0.88rem;
  padding: 21px 32px;
  margin-top: 36px;
}

.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  width: 100%;
  padding: 16px 32px;
  margin-top: 14px;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
}

.btn-secondary:hover {
  border-color: var(--accent-line);
  color: var(--text-sub);
}

/* ==========================================
   FORM ERROR
========================================== */
.form-error {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  color: var(--accent);
  padding: 14px 18px;
  font-size: 0.8rem;
  margin-top: 24px;
  letter-spacing: 0.05em;
}

.hidden { display: none !important; }

/* ==========================================
   LOADING SCREEN
========================================== */
.loader-wrap { text-align: center; }

.pot-loader {
  color: var(--accent);
  display: flex;
  justify-content: center;
  margin-bottom: 36px;
}

.pl-steam {
  opacity: 0;
  animation: potSteam 2.4s ease-in-out infinite;
  transform-origin: center bottom;
}
.pl-steam.p1 { animation-delay: 0s; }
.pl-steam.p2 { animation-delay: 0.35s; }
.pl-steam.p3 { animation-delay: 0.7s; }

@keyframes potSteam {
  0%   { opacity: 0;    transform: translateY(6px) scaleY(0.7); }
  35%  { opacity: 0.85; }
  100% { opacity: 0;    transform: translateY(-10px) scaleY(1.2); }
}

.loading-text {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.24em;
  margin-bottom: 12px;
}

.loading-sub {
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

/* ==========================================
   RESULT SCREEN
========================================== */
.review-card {
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  padding: 40px 36px 30px;
  margin-bottom: 40px;
  background: var(--bg-card);
  position: relative;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
}

/* メニューカードらしい二重罫 */
.review-card::after {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  pointer-events: none;
}

.review-card::before {
  content: '\201C';
  font-family: 'Cormorant Garamond', serif;
  font-size: 6rem;
  color: var(--accent);
  opacity: 0.12;
  position: absolute;
  top: 10px;
  left: 18px;
  line-height: 1;
  pointer-events: none;
}

.review-stars {
  color: var(--brass);
  font-size: 1rem;
  letter-spacing: 0.35em;
  text-align: center;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.review-text {
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 2.2;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
  letter-spacing: 0.06em;
  position: relative;
  z-index: 1;
}

.review-signature {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-align: right;
  position: relative;
  z-index: 1;
}

.action-section { text-align: center; }

.copy-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-top: 14px;
  margin-bottom: 4px;
}

.copy-note.copied { color: var(--success); }

/* ==========================================
   ERROR SCREEN
========================================== */
.error-wrap {
  text-align: center;
  padding: 44px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 420px;
}

.error-eyebrow {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 0.82rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 16px;
}

.error-wrap h2 {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 0.12em;
}

.error-msg {
  color: var(--text-sub);
  font-size: 0.84rem;
  margin-bottom: 32px;
  line-height: 2;
  letter-spacing: 0.05em;
}

/* ==========================================
   RESPONSIVE
========================================== */
@media (max-width: 520px) {
  .container { padding: 52px 18px 88px; }
  .options-grid { grid-template-columns: 1fr 1fr; }
  .title { font-size: 2.3rem; }
  .title-sm { font-size: 1.25rem; }
  .question-card { padding: 24px 18px; }
  .review-card { padding: 32px 22px 24px; }
  .st { filter: blur(34px); }
}

@media (prefers-reduced-motion: reduce) {
  .st, .dish-steam, .pl-steam, .header-icon, .screen.active { animation: none; }
}