.mode-flashcards { --mode-accent: #6c3eb5; }
.mode-quiz       { --mode-accent: #1a8a8a; }
.mode-type       { --mode-accent: #1d6a3f; }
.mode-listen     { --mode-accent: #1a4a8a; }
.mode-articles   { --mode-accent: #c8a84b; }
.mode-cloze      { --mode-accent: #c75a1a; }

:root[data-theme="dark"] .mode-flashcards { --mode-accent: #9b6fd8; }
:root[data-theme="dark"] .mode-quiz       { --mode-accent: #3fbfbf; }
:root[data-theme="dark"] .mode-type       { --mode-accent: #4cae7d; }
:root[data-theme="dark"] .mode-listen     { --mode-accent: #5e8ed8; }
:root[data-theme="dark"] .mode-articles   { --mode-accent: #e8c768; }
:root[data-theme="dark"] .mode-cloze      { --mode-accent: #e07f4a; }

.mode-ready { color: var(--mode-accent) !important; font-weight: 700; }

/* ── Session screens ────────────────────────────────────── */
.session {
  max-width: 640px;
}

.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.session-exit { color: var(--fg-muted); font-size: 0.95rem; }
.session-exit:hover { color: var(--mode-accent); text-decoration: none; }
.session-progress {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg-muted);
}

.session-card {
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border: 1px solid var(--glass-border);
  border-top: 6px solid var(--mode-accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}
.session-card-clickable {
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.session-card-clickable:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.session-card-clickable:active { transform: translateY(0); }
.session-card-clickable:focus-visible {
  outline: 2px solid var(--mode-accent);
  outline-offset: 4px;
}
.session-card::before {
  content: '';
  position: absolute;
  top: -40%; right: -20%;
  width: 60%; height: 80%;
  background: radial-gradient(circle, var(--mode-accent) 0%, transparent 70%);
  opacity: 0.05;
  pointer-events: none;
}

.card-face {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 16px;
  position: relative;
}

.card-word {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3rem);
  color: var(--fg);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.card-en {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  color: var(--fg);
  line-height: 1.15;
}

.card-meta {
  font-size: 1rem;
  color: var(--fg-muted);
}
.card-meta strong { color: var(--fg); font-weight: 600; }

.card-meta-small {
  margin-top: 8px;
  font-size: 0.95rem;
  color: var(--fg-muted);
  font-style: italic;
}

.card-article-badge {
  display: inline-block;
  background: var(--mode-accent);
  color: white;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.card-hint {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 12px;
  font-style: italic;
}

/* Small star button in the top-right corner of the flashcard back. */
.card-star-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 38px;
  height: 38px;
  min-height: 38px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--fg-muted);
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
  z-index: 2;
}
.card-star-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-2);
}
.card-star-btn.is-starred {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-2);
}
.card-star-btn:active { transform: scale(0.9); }

.card-example {
  margin-top: 8px;
  padding: 14px 18px;
  background: var(--accent-2);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  max-width: 100%;
}
.example-de {
  font-size: 1.05rem;
  color: var(--fg);
  font-style: italic;
}
.example-en {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

.speak-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--mode-accent, var(--accent)) 15%, var(--tile-bg));
  border: 1.5px solid color-mix(in srgb, var(--mode-accent, var(--accent)) 45%, transparent);
  color: var(--mode-accent, var(--accent));
  border-radius: 999px;
  padding: 0;
  width: 52px;
  height: 52px;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
  min-height: 52px;
  box-shadow: var(--shadow-xs);
}
.speak-btn svg { width: 24px; height: 24px; }
.speak-btn.speak-sm { width: 38px; height: 38px; min-height: 38px; }
.speak-btn.speak-sm svg { width: 18px; height: 18px; }
.speak-btn:hover {
  background: var(--mode-accent, var(--accent));
  color: var(--bg);
  border-color: var(--mode-accent, var(--accent));
  box-shadow: var(--shadow-md);
}
.speak-btn:active { transform: scale(0.95); }
.speak-btn:focus-visible { outline: 2px solid var(--mode-accent, var(--accent)); outline-offset: 3px; }

/* Dark mode: on hover the button fills with the (lightened) mode-accent.
   Force a near-black icon for contrast — var(--bg) would be cream which
   would clash. */
:root[data-theme="dark"] .speak-btn:hover { color: #1a1a24; }

/* ── Hints ──────────────────────────────────────────────── */
.session-hint-area {
  background: var(--tile-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.hint-line {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.95rem;
  color: var(--fg);
}
.hint-line-wide { flex-direction: column; align-items: flex-start; gap: 6px; }
.hint-label {
  color: var(--fg-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.72rem;
  white-space: nowrap;
}
.hint-value {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--mode-accent);
}
.hint-sentence {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--fg);
  line-height: 1.4;
}
.hint-letters {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.hint-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 32px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  border-bottom: 2px solid var(--mode-accent);
  color: var(--mode-accent);
}
.hint-letter.hint-blank {
  color: transparent;
  opacity: 0.6;
}
.hint-letter.hint-space {
  border: none;
  width: 12px;
}
.hint-letter.hint-punct {
  border: none;
  color: var(--fg-muted);
  font-weight: 400;
  width: auto;
  padding: 0 2px;
}
.hint-count {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--fg-muted);
  margin-left: 6px;
}

/* ── Session controls ──────────────────────────────────── */
.session-controls,
.session-judge {
  display: flex;
  gap: 12px;
}
.session-controls button,
.session-judge button {
  flex: 1;
  min-height: 56px;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: var(--mode-accent);
  color: white;
  border-color: transparent;
}
.btn-primary:hover { filter: brightness(1.05); box-shadow: var(--shadow-md); }

.btn-secondary {
  background: var(--accent-2);
  color: var(--fg);
  border-color: var(--border);
}

.btn-judge-wrong,
.btn-judge-right {
  border: 2px solid;
}
.btn-judge-wrong {
  background: #fff;
  color: #a8331a;
  border-color: #d8856e;
}
.btn-judge-wrong:hover { background: #faecea; }
.btn-judge-right {
  background: #fff;
  color: #1d6a3f;
  border-color: #6cb787;
}
.btn-judge-right:hover { background: #eaf6ee; }

:root[data-theme="dark"] .btn-judge-wrong {
  background: transparent;
  color: #f08d76;
  border-color: #d8856e;
}
:root[data-theme="dark"] .btn-judge-right {
  background: transparent;
  color: #6cb787;
  border-color: #4cae7d;
}

/* ── Session summary ───────────────────────────────────── */
.session-summary { text-align: center; }
.session-summary h1 { margin-top: 24px; }
.session-summary .summary-line { color: var(--fg-muted); margin-bottom: 32px; }

.summary-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin: 24px 0 40px;
}
.summary-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.summary-stat .num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
}
.summary-stat .num.right { color: #1d6a3f; }
.summary-stat .num.wrong { color: #a8331a; }
.summary-stat .num.hint  { color: var(--accent); }
.summary-stat .label {
  color: var(--fg-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.summary-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.button.button-primary {
  background: var(--mode-accent, var(--accent));
  color: white;
  border-color: transparent;
}
.button.button-primary:hover { filter: brightness(1.08); box-shadow: var(--shadow-md); }

@media (max-width: 480px) {
  .summary-stats { gap: 18px; }
  .summary-stat .num { font-size: 2.2rem; }
}

/* ── Prompts shared by quiz, type, listen, articles, cloze ────────────── */
.session-prompt {
  flex-direction: column;
  gap: 14px;
  min-height: auto;
  padding: 32px 24px;
  text-align: center;
}
.prompt-label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.prompt-hint {
  font-size: 0.85rem;
  color: var(--fg-muted);
  font-style: italic;
  margin-top: 8px;
}

/* ── MCQ (quiz, listen) ──────────────────────────────────────────────── */
.mcq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 16px;
}
.mcq-option {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  background: var(--tile-bg);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 14px 18px;
  font-size: 1.05rem;
  font-weight: 500;
  min-height: 60px;
  border-radius: var(--radius-sm);
  transition: background 0.1s ease, border-color 0.1s ease, transform 0.1s ease;
}
.mcq-option:hover { border-color: var(--mode-accent); background: var(--accent-2); }
.mcq-option:disabled { cursor: default; opacity: 0.85; }
.mcq-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-2);
  color: var(--mode-accent);
  font-weight: 700;
  font-family: var(--font-heading);
  flex-shrink: 0;
}
.mcq-text { flex: 1; }
.mcq-right {
  background: #eaf6ee !important;
  border-color: #6cb787 !important;
  color: #1d6a3f;
}
.mcq-right .mcq-letter { background: #6cb787; color: white; }
.mcq-wrong {
  background: #faecea !important;
  border-color: #d8856e !important;
  color: #a8331a;
}
.mcq-wrong .mcq-letter { background: #d8856e; color: white; }

:root[data-theme="dark"] .mcq-right { background: rgba(108, 183, 135, 0.15) !important; color: #6cb787; }
:root[data-theme="dark"] .mcq-wrong { background: rgba(216, 133, 110, 0.15) !important; color: #f08d76; }

/* ── Type / Cloze input ──────────────────────────────────────────────── */
.type-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.type-input {
  font-family: var(--font-body);
  font-size: 1.3rem;
  padding: 16px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--tile-bg);
  color: var(--fg);
  outline: none;
  transition: border-color 0.1s ease, box-shadow 0.1s ease;
}
.type-input:focus {
  border-color: var(--mode-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--mode-accent) 20%, transparent);
}
.type-input:disabled { opacity: 0.85; cursor: default; }
.type-feedback {
  font-size: 1rem;
  padding: 8px 0;
  min-height: 1.4em;
}
.type-feedback .answer {
  font-family: var(--font-heading);
  font-weight: 700;
  margin-left: 6px;
}
.feedback-exact { color: #1d6a3f; }
.feedback-close { color: #b8860b; }
.feedback-wrong { color: #a8331a; }
:root[data-theme="dark"] .feedback-exact { color: #6cb787; }
:root[data-theme="dark"] .feedback-wrong { color: #f08d76; }
:root[data-theme="dark"] .feedback-close { color: #e8c768; }

/* ── Listen big play ─────────────────────────────────────────────────── */
.listen-prompt {
  align-items: center;
  text-align: center;
}
.listen-big-play {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--mode-accent);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform 0.1s ease, filter 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 18px 0 6px;
}
.listen-big-play:hover { filter: brightness(1.08); }
.listen-big-play:active { transform: scale(0.95); }
.listen-controls {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  justify-content: center;
}
.listen-controls button { min-height: 40px; padding: 8px 16px; font-size: 0.9rem; }
.listen-reveal {
  margin-top: 16px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--mode-accent);
}

/* ── Articles trainer ────────────────────────────────────────────────── */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.article-option {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.6rem;
  min-height: 80px;
  background: var(--tile-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  transition: background 0.1s ease, border-color 0.1s ease, transform 0.1s ease;
}
.article-option:hover { background: var(--accent-2); border-color: var(--mode-accent); }
.article-option.art-der { color: #1a6abf; }
.article-option.art-die { color: #c75a1a; }
.article-option.art-das { color: #1d6a3f; }
.art-right {
  background: #eaf6ee !important;
  border-color: #6cb787 !important;
}
.art-wrong {
  background: #faecea !important;
  border-color: #d8856e !important;
}
:root[data-theme="dark"] .art-right { background: rgba(108, 183, 135, 0.15) !important; }
:root[data-theme="dark"] .art-wrong { background: rgba(216, 133, 110, 0.15) !important; }
.article-meta {
  background: var(--accent-2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.95rem;
  text-align: center;
}
.article-meta .meta-example {
  font-style: italic;
  color: var(--fg-muted);
  margin-top: 4px;
}

/* ── Cloze sentence ──────────────────────────────────────────────────── */
.cloze-sentence {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  line-height: 1.4;
  color: var(--fg);
  text-align: center;
}
.cloze-sentence .blank {
  display: inline-block;
  min-width: 90px;
  border-bottom: 3px solid var(--mode-accent);
  color: var(--mode-accent);
  padding: 0 8px;
  font-family: var(--font-body);
  letter-spacing: 0.1em;
}
.cloze-en {
  font-size: 0.95rem;
  color: var(--fg-muted);
  font-style: italic;
  margin-top: 8px;
  text-align: center;
}