/* ===== GOOGLE FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@400;500;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary:      #d4627a;
  --color-primary-lt:   #f9d0dc;
  --color-primary-dk:   #a84860;
  --color-beginner:     #6bbf8a;
  --color-elementary:   #e8963c;
  --color-intermediate: #9378c8;
  --color-bg:           #fdf4f7;
  --color-surface:      #ffffff;
  --color-border:       #f0d0de;
  --color-text:         #3d2235;
  --color-text-sub:     #9b7a8c;
  --radius:             18px;
  --radius-sm:          12px;
  --radius-pill:        999px;
  --shadow:             0 3px 14px rgba(212,98,122,.11);
  --shadow-lg:          0 8px 32px rgba(212,98,122,.18);
  --font-rounded:       'M PLUS Rounded 1c', 'Noto Sans JP', sans-serif;
  --font-body:          'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  min-height: 100vh;
}

/* subtle dot pattern */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, #f5bdd0 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: .18;
  pointer-events: none;
  z-index: 0;
}

.container { max-width: 920px; margin: 0 auto; padding: 0 16px; position: relative; z-index: 1; }

/* ===== HEADER ===== */
.site-header {
  background: linear-gradient(135deg, #d4627a 0%, #c05070 50%, #a84870 100%);
  color: white;
  padding: 22px 0 26px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}
.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  height: 20px;
  background: var(--color-bg);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  transform: scaleX(1.05);
}
.site-header .container { position: relative; z-index: 2; }
.site-title  { font-family: var(--font-rounded); font-size: 1.75rem; font-weight: 700; letter-spacing: .02em; }
.site-subtitle { font-size: .88rem; opacity: .88; margin-top: 3px; }

/* ===== NAV ===== */
.page-nav {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 22px; flex-wrap: wrap;
}
.page-nav a { color: var(--color-primary); text-decoration: none; font-size: .9rem; }
.page-nav a:hover { text-decoration: underline; }
.page-nav .sep, .page-nav .current { color: var(--color-text-sub); font-size: .88rem; }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 16px 0;
  margin-top: 52px;
  text-align: center;
  color: var(--color-text-sub);
  font-size: .78rem;
}

/* ===== HOME PAGE ===== */
.home-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
  margin-bottom: 40px;
}
.home-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px 22px 22px;
  text-decoration: none;
  color: var(--color-text);
  display: flex; flex-direction: column; gap: 10px;
  box-shadow: var(--shadow);
  transition: transform .18s, box-shadow .18s;
  position: relative;
  overflow: hidden;
}
.home-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-lt), var(--color-primary));
}
.home-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.home-card-icon { font-size: 2.2rem; }
.home-card h2 { font-family: var(--font-rounded); font-size: 1.2rem; }
.home-card p { color: var(--color-text-sub); font-size: .87rem; flex: 1; line-height: 1.6; }
.home-card-btn {
  display: inline-block;
  background: linear-gradient(135deg, #e07a92, #c05070);
  color: white;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-size: .88rem;
  font-weight: 700;
  align-self: flex-start;
  margin-top: 4px;
  box-shadow: 0 3px 10px rgba(212,98,122,.28);
  font-family: var(--font-rounded);
}

.level-guide { margin-bottom: 36px; }
.level-guide h2 { font-family: var(--font-rounded); font-size: 1.1rem; margin-bottom: 14px; color: var(--color-primary-dk); }
.level-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.level-item {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 16px;
  border-left: 4px solid;
  box-shadow: var(--shadow);
}
.level-item h3 { font-family: var(--font-rounded); font-size: .95rem; margin-bottom: 5px; }
.level-item p { font-size: .82rem; color: var(--color-text-sub); }
.level-beginner     { border-color: var(--color-beginner); }
.level-elementary   { border-color: var(--color-elementary); }
.level-intermediate { border-color: var(--color-intermediate); }

.progress-summary h2 {
  font-family: var(--font-rounded);
  font-size: 1.1rem;
  margin-bottom: 14px;
  color: var(--color-primary-dk);
}
#progress-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.progress-block {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 16px;
  box-shadow: var(--shadow);
}
.progress-block h3 { font-family: var(--font-rounded); font-size: .92rem; margin-bottom: 12px; color: var(--color-text-sub); }
.prog-row { margin-bottom: 10px; }
.prog-label { font-weight: 700; font-size: .85rem; display: inline-block; width: 50px; }
.prog-val   { font-size: .8rem; color: var(--color-text-sub); margin-left: 4px; }
.prog-bar  { height: 7px; background: var(--color-border); border-radius: var(--radius-pill); margin-top: 4px; }
.prog-fill { height: 100%; background: linear-gradient(90deg, #f7c5d3, #d4627a); border-radius: var(--radius-pill); transition: width .4s; }

.level-beginner-text     { color: var(--color-beginner); }
.level-elementary-text   { color: var(--color-elementary); }
.level-intermediate-text { color: var(--color-intermediate); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  font-size: .9rem; font-weight: 700;
  font-family: var(--font-rounded);
  transition: opacity .15s, transform .1s, box-shadow .15s;
}
.btn:hover  { opacity: .88; transform: translateY(-1px); }
.btn:active { transform: scale(.97); }
.btn:disabled,
.btn:disabled:hover,
.btn:disabled:active { cursor: default; opacity: .7; transform: none; box-shadow: none; }
.btn-primary {
  background: linear-gradient(135deg, #e07a92, #c05070);
  color: white;
  box-shadow: 0 3px 10px rgba(212,98,122,.28);
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-success {
  background: linear-gradient(135deg, #7dd4a0, #4caf7a);
  color: white;
  box-shadow: 0 3px 10px rgba(76,175,122,.22);
}
.btn-danger {
  background: linear-gradient(135deg, #f07070, #d44040);
  color: white;
}
.btn-sm { padding: 6px 14px; font-size: .8rem; }

/* ===== LEVEL TABS ===== */
.level-tabs { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.level-tab {
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-size: .9rem; font-weight: 700;
  font-family: var(--font-rounded);
  transition: all .15s;
  color: var(--color-text-sub);
}
.level-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.level-tab.active-beginner     { border-color: var(--color-beginner);     background: var(--color-beginner);     color: white; }
.level-tab.active-elementary   { border-color: var(--color-elementary);   background: var(--color-elementary);   color: white; }
.level-tab.active-intermediate { border-color: var(--color-intermediate); background: var(--color-intermediate); color: white; }

/* ===== SET SELECTOR ===== */
.set-selector { margin-bottom: 22px; }
.set-selector h3 { font-size: .9rem; color: var(--color-text-sub); margin-bottom: 10px; }
.set-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.set-btn {
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-size: .85rem;
  font-family: var(--font-rounded);
  position: relative;
  transition: all .15s;
  color: var(--color-text-sub);
}
.set-btn:hover  { border-color: var(--color-primary); color: var(--color-primary); }
.set-btn.active { border-color: var(--color-primary); background: var(--color-primary); color: white; }
.set-btn.completed::after {
  content: '♥';
  position: absolute;
  top: -7px; right: -7px;
  background: var(--color-primary);
  color: white;
  font-size: .6rem;
  width: 17px; height: 17px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--color-bg);
}

/* ===== CARD CONTROLS ===== */
.card-controls {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px; flex-wrap: wrap;
}
.sub-controls {
  display: flex; gap: 12px; align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: .85rem;
  color: var(--color-text-sub);
  padding: 10px 14px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.sub-controls label { display: flex; align-items: center; gap: 5px; cursor: pointer; }

.view-toggle {
  display: flex;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
  margin-left: auto;
}
.view-toggle button {
  padding: 7px 16px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: .85rem;
  font-family: var(--font-rounded);
  font-weight: 700;
  color: var(--color-text-sub);
  transition: background .15s, color .15s;
}
.view-toggle button + button { border-left: 1.5px solid var(--color-border); }
.view-toggle button.active {
  background: linear-gradient(135deg, #e07a92, #c05070);
  color: white;
}

/* ===== FLIP CARD ===== */
#card-flip-area { display: flex; flex-direction: column; align-items: center; }
.card-counter { color: var(--color-text-sub); font-size: .88rem; margin-bottom: 12px; }

.flip-card-wrap {
  perspective: 1200px;
  width: 100%;
  max-width: 480px;
  height: 280px;
  cursor: pointer;
  margin-bottom: 20px;
}
.flip-card-inner {
  position: relative;
  width: 100%; height: 100%;
  transition: transform .55s cubic-bezier(.4,.2,.2,1);
  transform-style: preserve-3d;
}
.flip-card-wrap.flipped .flip-card-inner { transform: rotateY(180deg); }

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%; height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px;
  text-align: center;
}
.flip-card-front {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
}
.flip-card-back {
  background: linear-gradient(145deg, #fff5f8, #ffe8ef);
  border: 2px solid #f9d0dc;
  transform: rotateY(180deg);
}

.card-korean   { font-size: 2.4rem; font-weight: 700; margin-bottom: 8px; line-height: 1.2; color: var(--color-primary-dk); }
.card-katakana { font-size: 1rem; color: var(--color-text-sub); }
.card-hint     { font-size: .8rem; color: #d4a0b8; margin-top: 16px; font-style: italic; }
.card-meaning  { font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; color: var(--color-text); font-family: var(--font-rounded); }
.card-pos {
  display: inline-block;
  background: var(--color-primary-lt);
  color: var(--color-primary-dk);
  padding: 2px 12px;
  border-radius: var(--radius-pill);
  font-size: .78rem;
  font-weight: 700;
  margin-bottom: 10px;
  font-family: var(--font-rounded);
}
.card-example {
  font-size: .85rem;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-top: 8px;
  border-top: 1px solid #f9d0dc;
  padding-top: 8px;
  width: 100%;
}
.card-example .ko { font-weight: 700; color: var(--color-primary-dk); }

.nav-btns { display: flex; gap: 12px; align-items: center; }

/* ===== LIST MODE ===== */
#card-list-area table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
#card-list-area th {
  background: linear-gradient(90deg, #fff0f4, #fde8ef);
  padding: 10px 12px;
  text-align: left;
  font-size: .82rem;
  color: var(--color-primary-dk);
  border-bottom: 1.5px solid var(--color-border);
  font-family: var(--font-rounded);
}
#card-list-area td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--color-border);
  font-size: .88rem;
  vertical-align: top;
}
#card-list-area tr:last-child td { border-bottom: none; }
#card-list-area tr:hover td { background: #fff8fb; }
.td-korean   { font-size: 1.05rem; font-weight: 700; color: var(--color-primary-dk); }
.td-pos {
  display: inline-block;
  background: var(--color-primary-lt);
  color: var(--color-primary-dk);
  padding: 1px 8px;
  border-radius: var(--radius-pill);
  font-size: .72rem;
  font-weight: 700;
  font-family: var(--font-rounded);
}
.example-cell { font-size: .8rem; color: var(--color-text-sub); }
.example-cell .ko { font-weight: 600; color: var(--color-primary-dk); display: block; }
.list-example-hidden .example-cell { display: none; }

/* ===== TYPING MODE ===== */
.typing-progress-bar {
  height: 7px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
  overflow: hidden;
}
.typing-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #f7c5d3, #d4627a);
  border-radius: var(--radius-pill);
  transition: width .35s;
}

.typing-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.typing-q-num { font-size: .8rem; color: var(--color-text-sub); margin-bottom: 8px; }
.typing-meaning {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-rounded);
  margin-bottom: 8px;
  color: var(--color-text);
  line-height: 1.3;
}
.typing-katakana { font-size: .9rem; color: var(--color-text-sub); margin-bottom: 6px; min-height: 1.4em; }
.typing-example {
  font-size: .82rem;
  color: var(--color-text-sub);
  background: #fff8fb;
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 14px;
  line-height: 1.6;
}
.typing-example .ko { color: var(--color-primary-dk); font-weight: 600; display: block; }

.typing-input-wrap { display: flex; gap: 10px; margin-bottom: 14px; }
.typing-input {
  flex: 1;
  padding: 13px 16px;
  font-size: 1.2rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  font-family: inherit;
  transition: border-color .2s, background .2s;
  background: var(--color-surface);
  color: var(--color-text);
}
.typing-input:focus  { border-color: var(--color-primary); background: #fff5f8; }
.typing-input.correct   { border-color: var(--color-beginner); background: #f0fdf4; }
.typing-input.incorrect { border-color: #ef4444;              background: #fef2f2; }
.typing-input:disabled  { color: var(--color-text); }

.typing-result {
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: .92rem;
  display: none;
  margin-bottom: 14px;
}
.typing-result.correct {
  display: block;
  background: #dcfce7;
  border: 1.5px solid #86efac;
  color: #166534;
}
.typing-result.incorrect {
  display: block;
  background: #fee2e2;
  border: 1.5px solid #fca5a5;
  color: #991b1b;
}
.typing-result-answer  { font-size: 1.1rem; font-weight: 700; margin-top: 5px; }
.typing-result-katakana { font-size: .83rem; margin-top: 2px; opacity: .75; }

.typing-bottom { display: flex; gap: 10px; flex-wrap: wrap; }

.typing-score-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 30px 22px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 1.5px solid var(--color-border);
  display: none;
}
.typing-score-card h3 { font-family: var(--font-rounded); font-size: 1.2rem; margin-bottom: 10px; color: var(--color-primary-dk); }
.typing-score-big { font-size: 3rem; font-weight: 700; color: var(--color-primary); font-family: var(--font-rounded); line-height: 1; }
.typing-score-pct { color: var(--color-text-sub); margin-top: 5px; font-size: 1rem; }
.typing-score-msg { margin-top: 10px; font-size: 1rem; }

.progress-note { font-size: .75rem; color: var(--color-text-sub); margin: -2px 0 6px; }

/* 未ログインの閲覧者に見せる登録の案内 */
.guest-cta {
  background: linear-gradient(135deg, #fff2f6, #ffe9f0);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 26px;
  margin-bottom: 36px;
  text-align: center;
}
.guest-cta h2 {
  font-family: var(--font-rounded);
  color: var(--color-primary-dk);
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.guest-cta p { font-size: .86rem; color: var(--color-text-sub); line-height: 1.8; }
.guest-cta-btns {
  margin-top: 18px;
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
}
.guest-cta-btns .btn { text-decoration: none; }

/* モード別の注意書き（タイピングの完了条件など） */
.mode-note {
  background: #fff8e6;
  border: 1.5px solid #f2ddac;
  border-left-width: 5px;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 18px;
  font-size: .8rem;
  line-height: 1.7;
  color: #7a5c20;
}
.mode-note strong { color: #a06a10; }

/* 結果画面の「完了にする」ボタンとその説明 */
.typing-complete-area { margin-top: 18px; }
.typing-complete-note { font-size: .82rem; color: var(--color-text-sub); }
.typing-complete-note:empty { display: none; }
.typing-complete-note.is-done { color: var(--color-primary); font-weight: 700; }

.missed-list {
  text-align: left;
  margin-top: 20px;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}
.missed-list h4 { font-family: var(--font-rounded); font-size: .88rem; margin-bottom: 8px; color: var(--color-text-sub); }
.missed-item {
  padding: 7px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: .85rem;
}
.missed-item:last-child { border-bottom: none; }
.missed-ko { font-size: 1rem; font-weight: 700; color: var(--color-primary-dk); }

/* ===== SORTING ===== */
.question-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.question-num    { font-family: var(--font-rounded); font-weight: 700; font-size: 1rem; color: var(--color-primary-dk); }
.question-translation {
  background: linear-gradient(135deg, #fff8fb, #ffeef5);
  border: 1.5px solid #f9d0dc;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: .95rem;
  margin-bottom: 16px;
  color: #6d3050;
  font-family: var(--font-rounded);
}

.answer-zone {
  min-height: 64px;
  border: 2.5px dashed var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 14px;
  background: #fff5f8;
  align-items: center;
  transition: background .2s;
}
.answer-zone.drag-over { background: #fde8ef; }
.answer-zone-label { font-size: .76rem; color: #f9a8c9; width: 100%; margin-bottom: 2px; font-style: italic; }

.pieces-zone { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; min-height: 44px; padding: 6px 0; }

.piece {
  padding: 8px 16px;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: .95rem;
  user-select: none;
  transition: all .15s;
  color: var(--color-text);
}
.piece:hover      { border-color: var(--color-primary); background: #fff5f8; transform: translateY(-2px); }
.piece.in-answer  { border-color: var(--color-primary); background: #fff0f5; color: var(--color-primary-dk); font-weight: 700; }
.piece.used       { opacity: .3; pointer-events: none; }

.result-display {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .92rem;
  margin-bottom: 14px;
  display: none;
}
.result-display.correct   { background: #dcfce7; border: 1.5px solid #86efac; color: #166534; display: block; }
.result-display.incorrect { background: #fee2e2; border: 1.5px solid #fca5a5; color: #991b1b; display: block; }
.result-answer { font-weight: 700; margin-top: 4px; }

.sorting-controls { display: flex; gap: 10px; flex-wrap: wrap; }

.question-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.score-summary {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 1.5px solid var(--color-border);
  display: none;
}
.score-summary h3 { font-family: var(--font-rounded); font-size: 1.2rem; margin-bottom: 10px; color: var(--color-primary-dk); }
.score-big { font-size: 2.8rem; font-weight: 700; color: var(--color-primary); font-family: var(--font-rounded); }

/* ===== MISC ===== */
.badge         { display: inline-block; padding: 2px 10px; border-radius: var(--radius-pill); font-size: .75rem; font-weight: 700; font-family: var(--font-rounded); }
.badge-beginner     { background: #dcfce7; color: #166534; }
.badge-elementary   { background: #fef3c7; color: #92400e; }
.badge-intermediate { background: #ede9fe; color: #5b21b6; }

.translate-link {
  display: inline-block;
  margin-top: 6px;
  font-size: .72rem;
  color: var(--color-primary);
  text-decoration: none;
  border: 1px solid var(--color-primary-lt);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}
.translate-link:hover { background: var(--color-primary-lt); }

.info-box {
  background: linear-gradient(135deg, #fff8fb, #ffe8ef);
  border: 1.5px solid #f9d0dc;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: .85rem;
  color: #7a3a50;
  line-height: 1.7;
  margin-bottom: 18px;
}

/* ===== HANGUL COURSE ===== */
.hangul-intro { margin-bottom: 28px; }
.hangul-intro h2 { font-family: var(--font-rounded); font-size: 1.15rem; color: var(--color-primary-dk); margin-bottom: 8px; }
.hangul-intro p { color: var(--color-text-sub); font-size: .9rem; }

.hangul-section { margin-bottom: 36px; }
.hangul-section h2 { font-family: var(--font-rounded); font-size: 1.1rem; color: var(--color-primary-dk); margin-bottom: 10px; }
.hangul-section-note { font-size: .85rem; color: var(--color-text-sub); margin-bottom: 14px; }

.jamo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.jamo-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 20px 12px;
  text-align: center;
  box-shadow: var(--shadow);
}
.jamo-char   { font-size: 3.4rem; font-weight: 700; color: var(--color-primary-dk); font-family: var(--font-rounded); line-height: 1.1; }
.jamo-name   { font-size: .82rem; color: var(--color-text-sub); margin-top: 4px; }
.jamo-romaji { font-size: 1.05rem; font-weight: 700; color: var(--color-text); margin-top: 8px; }
.jamo-kana   { font-size: .95rem; color: var(--color-text-sub); }
.jamo-note   { font-size: .8rem; color: var(--color-text-sub); margin-top: 8px; line-height: 1.45; }

.syllable-demo { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.syllable-demo-item {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
}
.syllable-demo-char  { font-size: 3.6rem; font-weight: 700; color: var(--color-primary-dk); font-family: var(--font-rounded); margin-bottom: 12px; }
.syllable-demo-parts { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.syllable-demo-chip {
  background: var(--color-primary-lt);
  color: var(--color-primary-dk);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: .82rem;
  line-height: 1.4;
}
.syllable-demo-chip strong { font-size: 1.4rem; font-family: var(--font-rounded); }
.syllable-demo-plus { color: var(--color-text-sub); font-weight: 700; }
.syllable-demo-note { font-size: .88rem; color: var(--color-text-sub); }

/* ===== AUTH (login / register) ===== */
/* ===== AUTH (login / register) ===== */
/* auth-page は body に付ける。ヘッダー・フッターを除いた残り全体を使って
   カードを上下中央に置くためのレイアウト。 */
body.auth-page { display: flex; flex-direction: column; min-height: 100vh; }
body.auth-page > main { flex: 1; display: flex; align-items: center; }

.auth-wrap { display: flex; justify-content: center; width: 100%; padding: 20px 0 44px; }
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 34px 32px 28px;
  position: relative;
  overflow: hidden;
}
.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: linear-gradient(90deg, #e07a92, #c05070, #a84870);
}
.auth-card-head { text-align: center; margin-bottom: 24px; }
.auth-card-icon {
  width: 58px; height: 58px;
  margin: 0 auto 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.65rem;
  border-radius: 50%;
  background: var(--color-primary-lt);
}
.auth-card h2 {
  font-family: var(--font-rounded);
  color: var(--color-primary-dk);
  font-size: 1.35rem;
}
.auth-card-lead { font-size: .82rem; color: var(--color-text-sub); margin-top: 4px; }

/* 各入力欄は必ず同じ横幅・同じ左右位置に揃える */
.auth-form { display: flex; flex-direction: column; gap: 15px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .82rem; color: var(--color-text-sub); font-weight: 500; }
.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(212, 98, 122, .13);
}
.auth-form .btn { width: 100%; justify-content: center; margin-top: 6px; padding: 13px 20px; }
.auth-error {
  color: #c03030;
  background: #fdeaea;
  border: 1px solid #f5c4c4;
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: .82rem;
}
.auth-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 22px 0 16px;
  color: var(--color-text-sub); font-size: .74rem;
}
.auth-divider::before, .auth-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--color-border);
}
.auth-switch { font-size: .85rem; color: var(--color-text-sub); text-align: center; }
.auth-switch a { color: var(--color-primary); font-weight: 700; }
.auth-perks { list-style: none; margin-top: 20px; display: flex; flex-direction: column; gap: 8px; }
.auth-perks li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .78rem; color: var(--color-text-sub); line-height: 1.5;
}
.auth-perks .perk-icon { flex-shrink: 0; }

/* ===== ACCOUNT MENU (右上に固定表示。app.js が body に差し込む) ===== */
/* .site-header は overflow:hidden なのでヘッダー内に入れるとドロップダウンが
   切れてしまう。そのため body 直下に fixed で配置している。 */
.account-menu { position: fixed; top: 13px; right: 16px; z-index: 100; }
.account-trigger {
  display: flex; align-items: center; gap: 8px;
  max-width: 240px;
  padding: 5px 12px 5px 5px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(255, 255, 255, .8);
  background: rgba(255, 255, 255, .95);
  color: var(--color-primary-dk);
  box-shadow: var(--shadow);
  cursor: pointer;
  font-family: var(--font-rounded);
  font-size: .8rem; font-weight: 500;
  transition: box-shadow .15s, transform .1s;
}
.account-trigger:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
a.account-trigger { text-decoration: none; }
.account-avatar {
  width: 26px; height: 26px; flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #e07a92, #c05070);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8rem;
  text-transform: uppercase;
}
.account-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.account-caret { font-size: .55rem; opacity: .7; transition: transform .18s; }
.account-menu.open .account-caret { transform: rotate(180deg); }

.account-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0;
  min-width: 234px;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 6px;
}
.account-dropdown[hidden] { display: none; }
.account-dropdown-head {
  padding: 9px 12px 11px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 6px;
}
.account-dropdown-label { display: block; font-size: .7rem; color: var(--color-text-sub); }
.account-dropdown-email {
  display: block; font-size: .84rem; font-weight: 500;
  color: var(--color-text); word-break: break-all; line-height: 1.45;
}
.account-item {
  display: flex; align-items: center; gap: 9px;
  width: 100%;
  padding: 9px 12px;
  border: none; background: none; cursor: pointer;
  border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: .86rem;
  color: var(--color-text); text-decoration: none; text-align: left;
}
.account-item:hover { background: var(--color-bg); }
.account-item-danger { color: #c03030; }
.account-item-danger:hover { background: #fdeaea; }

@media (max-width: 520px) {
  .account-trigger { max-width: 44px; padding: 5px; gap: 0; }
  .account-trigger .account-name, .account-trigger .account-caret { display: none; }
  .auth-card { padding: 30px 22px 26px; }
}

.syllable-builder {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between;
}
.syllable-builder-controls { display: flex; gap: 16px; flex-wrap: wrap; }
.syllable-builder-controls label { font-size: .82rem; color: var(--color-text-sub); display: flex; flex-direction: column; gap: 6px; }
.syllable-builder-controls select {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  font-size: 1rem;
  font-family: var(--font-rounded);
  background: var(--color-bg);
  color: var(--color-text);
}
.hangul-footer-nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 32px; }

.syllable-builder-result { text-align: center; }
.syllable-builder-char {
  font-size: 4.6rem;
  font-weight: 700;
  font-family: var(--font-rounded);
  color: var(--color-primary-dk);
  min-width: 110px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .site-title { font-size: 1.35rem; }
  .flip-card-wrap { height: 240px; }
  .card-korean { font-size: 1.9rem; }
  #card-list-area th:nth-child(5),
  #card-list-area td:nth-child(5) { display: none; }
  .piece { font-size: .88rem; padding: 7px 13px; }
  .typing-meaning { font-size: 1.25rem; }
  .typing-input { font-size: 1.05rem; padding: 11px 14px; }
  .syllable-builder { flex-direction: column; align-items: stretch; text-align: center; }
  .syllable-builder-controls { justify-content: center; }
  .jamo-char { font-size: 2.6rem; }
  .syllable-demo-char { font-size: 2.8rem; }
  .syllable-builder-char { font-size: 3.6rem; }
}
@media (max-width: 400px) {
  #card-list-area th:nth-child(3),
  #card-list-area td:nth-child(3) { display: none; }
}