@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap');

:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --panel: #121825;
  --text: #e8ecf2;
  --muted: #9aa3b2;
  --border: #2a3344;
  --accent: #f2c279;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', 'Menlo', 'Consolas', monospace;
  line-height: 1.6;
  font-size: clamp(1rem, 0.6vw + 0.9rem, 1.2rem);
}

.app {
  max-width: 72rem;
  width: 100%;
  margin: 0 auto;
  padding: clamp(1rem, 2vw, 2rem) clamp(1rem, 3vw, 2.5rem) 3.5rem;
  display: grid;
  gap: 1.25rem;
}

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

.home-link {
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}

.session-email {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.9rem;
}

.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
}

select,
textarea,
button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button {
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.question {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: grid;
  gap: 12px;
}

.question-text {
  font-size: 1rem;
}

.lines-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  white-space: pre-wrap;
}

.passage-title {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.scheme {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.hidden {
  display: none;
}

.ai-result {
  color: var(--muted);
  font-size: 0.9rem;
}

.mark-scheme {
  margin: 0;
  padding-left: 18px;
}

.scheme-table {
  display: grid;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  font-size: 0.9rem;
}

.scheme-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.scheme-cell {
  padding-right: 8px;
}

.scheme-analysis {
  border-left: 1px solid var(--border);
  padding-left: 12px;
}

.scheme-row:last-child {
  border-bottom: none;
}

.scheme-header {
  background: rgba(255, 255, 255, 0.04);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  color: var(--muted);
}