:root {
  --bg: #F7F5F1;
  --surface: #FFFFFF;
  --border: #E3DED6;
  --text-primary: #1C1917;
  --text-secondary: #78716C;
  --text-muted: #A8A29E;
  --accent: #2D6A4F;
  --accent-light: #D8EEDF;
  --correct: #2D6A4F;
  --correct-bg: #EBF5EF;
  --correct-border: #A8D5B8;
  --wrong: #9B3A1A;
  --wrong-bg: #FBF0EC;
  --wrong-border: #E8B4A0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.09);
  --radius: 18px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  font-family: 'DM Sans', sans-serif;
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

.phone {
  width: 100%;
  max-width: 390px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  padding: 14px 20px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.topbar-back {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 15px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.topbar-info { flex: 1; }

.topbar-chapter {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.topbar-title {
  font-family: 'Lora', serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

/* Buttons */
.btn-primary {
  width: 100%;
  padding: 15px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(45,106,79,0.28);
  transition: all 0.15s;
}

.btn-primary:active { transform: scale(0.98); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
}

/* Form inputs */
.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s;
}

.form-input:focus {
  border-color: var(--accent);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group {
  margin-bottom: 16px;
}

/* Audio play button in topbar */
.audio-play-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  padding-left: 2px;
}
.audio-play-btn.playing {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
  padding-left: 0;
}

/* Language toggle */
.lang-toggle-wrap {
  display: flex;
  justify-content: center;
  padding: 14px 20px 4px;
}
.lang-toggle {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 3px;
  gap: 2px;
  box-shadow: var(--shadow-sm);
}
.lang-toggle button {
  padding: 5px 18px;
  border-radius: 99px;
  border: none;
  background: transparent;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.lang-toggle button.active {
  background: var(--accent);
  color: white;
  box-shadow: 0 1px 4px rgba(45,106,79,0.25);
}

/* Scroll area */
.scroll-area {
  flex: 1;
  overflow-y: auto;
  padding: 16px 16px 130px;
  display: flex;
  flex-direction: column;
  -webkit-overflow-scrolling: touch;
}

/* Scene header */
.scene-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.scene-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Narration */
.narration {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  padding: 6px 16px;
  margin-bottom: 14px;
}

/* Message groups */
.msg-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}
.msg-group.left  { align-items: flex-start; }
.msg-group.right { align-items: flex-end; }

.msg-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
.msg-group.right .msg-row { flex-direction: row-reverse; }

.avatar-spacer {
  width: 32px;
  flex-shrink: 0;
}

/* Avatars */
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.avatar-0 { background: #FAE0D4; color: #9B3A1A; }
.avatar-1 { background: #D4E4FA; color: #1A4A9B; }
.avatar-2 { background: #D4EDDA; color: #2D6A4F; }
.avatar-3 { background: #EAD4FA; color: #6A1A9B; }
.avatar-4 { background: #FAF3D4; color: #9B7A1A; }

.msg-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
}
.msg-group.right .msg-meta { flex-direction: row-reverse; }

.msg-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* Bubbles */
.bubble {
  max-width: 78%;
  padding: 11px 15px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.msg-group.left .bubble  { background: var(--surface); border-color: var(--border); border-top-left-radius: 5px; }
.msg-group.right .bubble { background: #EBF5EF; border-color: #C8E6D0; border-top-right-radius: 5px; }

.bubble-text {
  font-size: 15.5px;
  line-height: 1.55;
}
.lang-greek .bubble-text { font-family: 'Lora', serif; }
.lang-de .bubble-text {
  font-family: 'DM Sans', sans-serif;
  font-style: italic;
  color: var(--text-secondary);
  font-size: 14.5px;
}

/* Bottom bar */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 390px;
  padding: 12px 20px 30px;
  background: linear-gradient(to top, var(--bg) 72%, transparent);
  z-index: 99;
}
.btn-continue {
  width: 100%;
  padding: 15px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(45,106,79,0.28);
  text-decoration: none;
  display: block;
  text-align: center;
  transition: all 0.15s;
}
.btn-continue:active { transform: scale(0.98); }

/* HTMX fade transition */
.htmx-swapping #dialogue-lines { opacity: 0; transition: opacity 0.15s; }
.htmx-settling  #dialogue-lines { opacity: 1; transition: opacity 0.15s; }

/* Chapter list */
.chapter-list { display: flex; flex-direction: column; gap: 0; }
.chapter-row {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.12s;
}
.chapter-row:first-child { border-top: 1px solid var(--border); }
.chapter-row:active { background: var(--accent-light); }
.chapter-row-info { flex: 1; }
.chapter-row-num {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.chapter-row-title {
  font-family: 'Lora', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.chapter-row-arrow {
  color: var(--text-muted);
  font-size: 16px;
  flex-shrink: 0;
}

/* Chapter group structure (home page) */
.chapter-group-header {
  padding: 14px 20px 6px;
  background: var(--bg);
}
.chapter-group-label {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.chapter-group-title {
  font-family: 'Lora', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.chapter-subrow {
  display: flex;
  align-items: center;
  padding: 12px 20px 12px 32px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.12s;
  gap: 10px;
}
.chapter-subrow:active { background: var(--accent-light); }
.chapter-subrow-label {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1px;
}
.chapter-subrow-title {
  font-family: 'Lora', serif;
  font-size: 14px;
  color: var(--text-primary);
}
.chapter-grammar-header {
  padding: 8px 20px 5px 32px;
  background: var(--bg);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.chapter-grammar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px 10px 44px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 13px;
  transition: background 0.12s;
}
.chapter-grammar-row:active { background: var(--accent-light); }
.chapter-grammar-placeholder {
  padding: 10px 20px 10px 44px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

/* Grammar content */
.grammar-p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}
.grammar-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 20px 0 8px;
}
.grammar-note {
  background: var(--accent-light);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}
.grammar-example {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  margin-bottom: 10px;
}
.grammar-example-greek {
  font-family: 'Lora', serif;
  font-size: 15px;
  color: var(--text-primary);
}
.grammar-example-de {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 3px;
  font-style: italic;
}
.grammar-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: 16px;
}
.grammar-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-family: 'DM Sans', sans-serif;
}
.grammar-table th {
  padding: 8px 10px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.grammar-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.grammar-table tr:last-child td { border-bottom: none; }
.grammar-table .td-case { color: var(--text-muted); white-space: nowrap; }
.grammar-table .td-greek { font-family: 'Lora', serif; color: var(--text-primary); }
.grammar-table .td-de { color: var(--text-secondary); font-style: italic; }

/* Error message */
.error-msg {
  background: var(--wrong-bg);
  border: 1px solid var(--wrong-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13px;
  color: var(--wrong);
  margin-bottom: 16px;
}