:root {
  --cream: #f5f0e8;
  --ink: #1a1714;
  --orange: #e8601c;
  --orange-light: #fde8da;
  --muted: #8a8077;
  --border: #d8d0c4;
  --green: #2d6a4f;
  --green-light: #d8f3dc;
  --red: #c1121f;
  --red-light: #ffe0e0;
  --card: #fffdf9;
}

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

body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
}

/* ── Header ── */
header {
  background: var(--ink);
  color: var(--cream);
  padding: 28px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid var(--orange);
}
header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 1.9rem;
  letter-spacing: -0.02em;
}
header span {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── Tab bar ── */
.tabs {
  display: flex;
  background: var(--ink);
  padding: 0 48px;
  gap: 4px;
}
.tab-btn {
  padding: 12px 28px;
  background: none;
  border: none;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.tab-btn.active {
  color: var(--orange);
  border-bottom-color: var(--orange);
}
.tab-btn:hover:not(.active) { color: var(--cream); }

/* ── Pages ── */
.page { display: none; padding: 48px; max-width: 900px; margin: 0 auto; }
.page.active { display: block; }

/* ── Score bar ── */
.score-bar {
  background: var(--ink);
  color: var(--cream);
  padding: 14px 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}
.score-bar span { color: var(--orange); font-weight: 500; }
.score-bar button {
  margin-left: auto;
  background: var(--orange);
  color: #fff;
  border: none;
  padding: 8px 20px;
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.2s;
}
.score-bar button:hover { background: #c94e14; }

/* ── Section title ── */
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.section-subtitle {
  font-size: 0.82rem;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}

/* ── Item card ── */
.item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 22px;
  margin-bottom: 14px;
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 14px;
  align-items: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.item:focus-within {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-light);
}
.item.correct { border-color: var(--green); background: var(--green-light); }
.item.wrong   { border-color: var(--red);   background: var(--red-light); }

.item-num {
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  color: var(--orange);
  font-weight: 500;
  text-align: right;
}

.item-body { display: flex; flex-direction: column; gap: 8px; }

.item-prompt {
  font-size: 0.93rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
}

.item-input {
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--border);
  outline: none;
  font-family: 'DM Mono', monospace;
  font-size: 0.88rem;
  color: var(--ink);
  padding: 4px 0;
  width: 100%;
  transition: border-color 0.2s;
  max-width: 480px;
}
.item-input:focus { border-bottom-color: var(--orange); }
.item.correct .item-input { border-bottom-color: var(--green); }
.item.wrong   .item-input { border-bottom-color: var(--red); }

.check-icon {
  font-size: 1.1rem;
  width: 28px;
  text-align: center;
}

.feedback {
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  color: var(--red);
  display: none;
}
.item.wrong .feedback { display: block; }
.feedback strong { color: var(--green); }

/* ── Actions ── */
.actions {
  display: flex;
  gap: 12px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--orange);
  color: #fff;
  border: none;
  padding: 13px 36px;
  font-family: 'DM Mono', monospace;
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover { background: #c94e14; }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--border);
  padding: 13px 28px;
  font-family: 'DM Mono', monospace;
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: border-color 0.2s, color 0.2s;
}
.btn-secondary:hover { border-color: var(--orange); color: var(--orange); }

/* ── Result banner ── */
.result-banner {
  background: var(--ink);
  color: var(--cream);
  border-radius: 8px;
  padding: 28px 36px;
  display: none;
  align-items: center;
  gap: 24px;
  margin-bottom: 32px;
}
.result-banner.show { display: flex; }
.result-score {
  font-family: 'Playfair Display', serif;
  font-size: 2.8rem;
  color: var(--orange);
  line-height: 1;
}
.result-score small { font-size: 1rem; color: var(--muted); }
.result-msg {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #c8bfb0;
}
.result-msg strong { color: var(--cream); }

/* ── Solutions ── */
.sol-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--orange);
  border-radius: 4px;
  padding: 14px 18px;
  margin-bottom: 10px;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
}
.sol-num {
  font-family: 'DM Mono', monospace;
  font-size: 0.78rem;
  color: var(--orange);
  text-align: right;
  padding-top: 2px;
}
.sol-en {
  font-size: 0.82rem;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  margin-bottom: 3px;
}
.sol-de {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  header, .tabs, .score-bar, .page { padding-left: 20px; padding-right: 20px; }
  .item { grid-template-columns: 22px 1fr auto; gap: 10px; }
}