/*
 * Quaderno - foglio di stile dedicato.
 *
 * Filosofia mobile-first: i compiti si fanno di sera, sul divano, magari
 * sul telefono. UI single-panel, leggera, focalizzata. Niente sidebar,
 * niente menu lussureggianti. Una sola cosa alla volta.
 *
 * Anche su desktop, il Quaderno mantiene un layout centrato e stretto
 * (max-width ~720px). Non e' un IDE.
 */

:root {
  --q-bg: #f6f4ed;          /* tono carta */
  --q-surface: #fffdf6;
  --q-ink: #2a2820;
  --q-ink-soft: #6c685a;
  --q-rule: #dad6c8;
  --q-accent: #8c4a1f;       /* terra di siena - tonalita' "quaderno scuola" */
  --q-accent-soft: #f0e4d6;
  --q-warning: #b05f25;
  --q-success: #4e7a39;
}

html.quaderno, html.quaderno body {
  background: var(--q-bg);
  color: var(--q-ink);
  font-family: "Iowan Old Style", "Palatino", Georgia, serif;
  font-size: 17px;
  line-height: 1.65;
  margin: 0;
  padding: 0;
}

.q-topbar {
  background: var(--q-surface);
  border-bottom: 1px solid var(--q-rule);
  padding: 0.8rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.q-topbar .q-logo {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--q-ink);
}
.q-topbar .q-logo a { color: inherit; text-decoration: none; }
.q-topbar nav a {
  color: var(--q-ink-soft);
  text-decoration: none;
  margin-left: 1rem;
  font-size: 0.9rem;
}
.q-topbar nav .logout-form { display: inline; }
.q-topbar nav .logout-button {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--q-ink-soft);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.q-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.q-card {
  background: var(--q-surface);
  border: 1px solid var(--q-rule);
  padding: 1.2rem 1.3rem;
  margin-bottom: 1.2rem;
}

.q-h1 { font-size: 1.9rem; margin: 0 0 0.6rem 0; font-weight: 600; }
.q-h2 { font-size: 1.3rem; margin: 1.6rem 0 0.6rem 0; font-weight: 600; }
.q-meta { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 0.8rem; color: var(--q-ink-soft); letter-spacing: 0.03em; }

.q-btn {
  display: inline-block;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--q-ink);
  color: var(--q-ink);
  background: transparent;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
}
.q-btn:hover { background: var(--q-ink); color: var(--q-bg); }
.q-btn.primary {
  background: var(--q-accent);
  border-color: var(--q-accent);
  color: white;
}
.q-btn.primary:hover { background: var(--q-ink); border-color: var(--q-ink); }
.q-btn.small { padding: 0.4rem 0.8rem; font-size: 0.85rem; }

.q-input, .q-textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--q-rule);
  background: var(--q-surface);
  font-family: inherit;
  font-size: 1rem;
  color: var(--q-ink);
}
.q-textarea { min-height: 280px; resize: vertical; line-height: 1.7; }

.q-status {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 2px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}
.q-status.open { background: var(--q-accent-soft); color: var(--q-accent); }
.q-status.done { background: #e1ede1; color: var(--q-success); }
.q-status.ai-free { background: #fff3e0; color: var(--q-warning); border: 1px solid var(--q-warning); }
.q-status.human { background: #ece8f4; color: #5b4778; }
.q-status.semantic { background: #e8eef4; color: #3f5d76; }

.q-feedback {
  border-left: 3px solid var(--q-accent);
  background: var(--q-accent-soft);
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}
.q-feedback h3 { margin-top: 0; }
.q-back {
  color: var(--q-ink-soft);
  font-size: 0.9rem;
  text-decoration: none;
}
.q-page-title { margin-top: 1rem; }
.q-lead { color: var(--q-ink-soft); max-width: 62ch; }
.q-no-top { margin-top: 0; }
.q-mission-card .q-h1 { margin-top: 0.7rem; }
.q-mission { margin-bottom: 0; font-size: 1.05rem; }
.q-eyebrow {
  color: var(--q-accent);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.q-learning-progress {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 1.4rem 0;
}
.q-learning-step {
  color: var(--q-ink-soft);
  min-width: 0;
  position: relative;
  text-align: center;
}
.q-learning-step::before {
  background: var(--q-rule);
  content: "";
  height: 1px;
  left: -50%;
  position: absolute;
  top: 0.75rem;
  width: 100%;
  z-index: 0;
}
.q-learning-step:first-child::before { display: none; }
.q-learning-step > span {
  align-items: center;
  background: var(--q-bg);
  border: 1px solid var(--q-rule);
  border-radius: 50%;
  display: inline-flex;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.72rem;
  height: 1.5rem;
  justify-content: center;
  position: relative;
  width: 1.5rem;
  z-index: 1;
}
.q-learning-step small {
  display: block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.68rem;
  line-height: 1.2;
  margin-top: 0.35rem;
  overflow-wrap: anywhere;
}
.q-learning-step.current { color: var(--q-accent); font-weight: 700; }
.q-learning-step.current > span {
  background: var(--q-accent);
  border-color: var(--q-accent);
  color: white;
}
.q-learning-step.done > span {
  background: var(--q-success);
  border-color: var(--q-success);
  color: white;
}

.q-brief {
  background: var(--q-surface);
  border: 1px solid var(--q-rule);
  margin: 1rem 0 1.4rem;
  padding: 0.8rem 1rem;
}
.q-brief summary { cursor: pointer; font-weight: 600; }
.q-brief div { margin-top: 0.8rem; white-space: pre-wrap; }
.q-section-heading {
  align-items: end;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-top: 1.6rem;
}
.q-section-heading .q-h2 { margin: 0.1rem 0 0; }
.q-section-heading > small { color: var(--q-ink-soft); text-align: right; }
.q-prompt { color: var(--q-ink-soft); margin: 0.5rem 0 0.8rem; }
.q-save-line { display: flex; justify-content: space-between; margin-top: 0.4rem; }

.q-checkpoint {
  align-items: flex-start;
  background: var(--q-surface);
  border: 1px solid var(--q-rule);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.4rem;
  padding: 1rem 1.1rem;
}
.q-checkpoint > span { color: var(--q-ink-soft); }
.q-test-form textarea,
.q-composer textarea {
  background: white;
  border: 1px solid var(--q-rule);
  box-sizing: border-box;
  font: inherit;
  min-height: 7rem;
  padding: 0.7rem;
  resize: vertical;
  width: 100%;
}

.q-ai-free { background: #fff3e0; border-left-color: var(--q-warning); }
.q-revision { background: #fff3e0; border-left-color: var(--q-warning); }
.q-human-wait { background: #ece8f4; border-left-color: #5b4778; }
.q-complete { background: #e1ede1; border-left-color: var(--q-success); }

.q-tutor {
  background: var(--q-surface);
  border: 1px solid var(--q-rule);
  margin: 1.5rem 0;
  padding: 0 1rem 1rem;
}
.q-thread { display: grid; gap: 0.7rem; margin: 1rem 0; }
.q-message {
  border-left: 2px solid var(--q-rule);
  padding: 0.2rem 0 0.2rem 0.8rem;
}
.q-message.student { border-left-color: var(--q-accent); margin-left: 1.5rem; }
.q-message strong {
  color: var(--q-ink-soft);
  display: block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.72rem;
  margin-bottom: 0.2rem;
  text-transform: uppercase;
}
.q-composer { display: grid; gap: 0.6rem; }
.q-composer .q-btn { justify-self: start; }
.q-composer small { color: var(--q-ink-soft); }

.q-messages { display: grid; gap: 0.4rem; margin: 1rem 0; }
.q-messages > div {
  background: var(--q-surface);
  border-left: 3px solid var(--q-accent);
  padding: 0.7rem 0.9rem;
}
.q-submit-form { display: grid; gap: 0.7rem; }
.q-submit-form label { margin-top: 1rem; }
.q-textarea-short { min-height: 8rem; }
.q-submit-decision {
  background: var(--q-surface);
  border: 1px solid var(--q-rule);
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
  padding: 1rem;
}
.q-submit-decision strong,
.q-submit-decision span { flex-basis: 100%; }
.q-submit-decision span { color: var(--q-ink-soft); }
.q-criteria { padding-left: 1.25rem; }
.q-criteria li { margin: 0.45rem 0; }
.q-criteria li > span { color: var(--q-ink-soft); display: block; font-size: 0.9rem; }
.q-result-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1rem; }
.q-result-actions form { margin: 0; }
.q-authorship { border-left: 3px solid var(--q-accent); margin: 0; padding-left: 1rem; }
.q-open-question { font-size: 1.15rem; margin-bottom: 0; }
.q-homework-row h3 { margin: 0.6rem 0 0.3rem; }
.q-homework-row h3 a { color: var(--q-ink); text-decoration: none; }
.q-homework-row p { color: var(--q-ink-soft); margin: 0.4rem 0 0.8rem; }
.q-homework-row.done { opacity: 0.88; }

/* Mobile-first: gia' single-column. Su desktop largo, niente da fare:
   il max-width: 720px tiene tutto centrato. */

@media (max-width: 600px) {
  .q-main { padding: 1rem 0.8rem 3rem; }
  .q-h1 { font-size: 1.6rem; }
  .q-textarea { font-size: 1rem; min-height: 220px; }
  .q-card { padding: 1rem; }
  .q-learning-step small { font-size: 0.6rem; }
  .q-section-heading { align-items: start; flex-direction: column; gap: 0.15rem; }
  .q-section-heading > small { text-align: left; }
  .q-save-line { align-items: flex-start; flex-direction: column; gap: 0.2rem; }
}