/* ============================================================
   PYTHON FOR CREATORS — Course Stylesheet
   Premium dark theme with clear typography for code learning
   ============================================================ */

:root {
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Core palette */
  --bg-primary: #0f1117;
  --bg-secondary: #161822;
  --bg-card: #1c1f2e;
  --bg-code: #1a1d2e;
  --bg-highlight: #232740;
  --bg-success: rgba(52, 211, 153, 0.08);
  --bg-warning: rgba(251, 191, 36, 0.08);
  --bg-info: rgba(96, 165, 250, 0.08);
  --bg-action: rgba(139, 92, 246, 0.08);

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-heading: #f1f5f9;
  --text-code: #e2e8f0;

  --accent-blue: #60a5fa;
  --accent-purple: #a78bfa;
  --accent-green: #34d399;
  --accent-orange: #fb923c;
  --accent-yellow: #fbbf24;
  --accent-red: #f87171;
  --accent-pink: #f472b6;

  --border-subtle: #2a2d3e;
  --border-card: #2e3148;
  --border-accent: #3b3f5c;

  /* Code syntax */
  --syntax-keyword: #c084fc;
  --syntax-string: #34d399;
  --syntax-comment: #64748b;
  --syntax-function: #60a5fa;
  --syntax-number: #fb923c;
  --syntax-operator: #94a3b8;
  --syntax-builtin: #f472b6;

  /* Sizing */
  --max-width: 780px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

/* ---- Reset & Base ---- */

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

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}

/* ---- Layout ---- */

.course-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

/* ---- Course Header ---- */

.course-header {
  text-align: center;
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 3rem;
}

.course-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.2rem;
}

.course-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.6rem;
}

.course-header .subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ---- Day Navigation ---- */

.day-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.day-number {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: 100px;
}

.day-duration {
  color: var(--text-muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.day-type {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
}

/* ---- Section Headers ---- */

h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: -0.02em;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-heading);
  margin: 2rem 0 0.8rem;
}

h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 1.8rem 0 0.6rem;
}

/* ---- Text ---- */

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

strong {
  color: var(--text-heading);
  font-weight: 600;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

a:hover {
  border-bottom-color: var(--accent-blue);
}

ul, ol {
  margin: 0.5rem 0 1.2rem 1.5rem;
  color: var(--text-primary);
}

li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

li::marker {
  color: var(--accent-purple);
}

/* ---- Cards & Callouts ---- */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.callout {
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  margin: 1.5rem 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.callout-title {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callout.watch {
  background: var(--bg-action);
  border-color: var(--accent-purple);
}
.callout.watch .callout-title { color: var(--accent-purple); }

.callout.do {
  background: var(--bg-success);
  border-color: var(--accent-green);
}
.callout.do .callout-title { color: var(--accent-green); }

.callout.info {
  background: var(--bg-info);
  border-color: var(--accent-blue);
}
.callout.info .callout-title { color: var(--accent-blue); }

.callout.warning {
  background: var(--bg-warning);
  border-color: var(--accent-yellow);
}
.callout.warning .callout-title { color: var(--accent-yellow); }

.callout.tip {
  background: rgba(52, 211, 153, 0.06);
  border-color: var(--accent-green);
}
.callout.tip .callout-title { color: var(--accent-green); }

.callout.danger {
  background: rgba(248, 113, 113, 0.08);
  border-color: var(--accent-red);
}
.callout.danger .callout-title { color: var(--accent-red); }

.callout p:last-child {
  margin-bottom: 0;
}

/* ---- Video Embed Card ---- */

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 1.5rem 0;
}

.video-card .video-header {
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.video-card .video-header h3 {
  margin: 0;
  font-size: 1rem;
}

.video-card .video-header p {
  margin: 0.3rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.video-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-highlight);
  color: var(--text-primary);
  text-decoration: none;
  border: none;
  transition: background 0.2s;
}

.video-link:hover {
  background: var(--border-accent);
  border: none;
}

.video-play-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.video-play-icon svg {
  width: 20px;
  height: 20px;
  fill: #fff;
  margin-left: 2px;
}

.video-link-text {
  font-size: 0.9rem;
}

.video-link-text .label {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---- Code Blocks ---- */

pre {
  background: var(--bg-code);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  margin: 1rem 0 1.5rem;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.7;
  position: relative;
}

pre .lang-label {
  position: absolute;
  top: 0.5rem;
  right: 0.8rem;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-family: var(--font-body);
}

code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* Inline code */
p code, li code, td code {
  background: var(--bg-highlight);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--accent-pink);
  border: 1px solid var(--border-subtle);
}

/* Syntax highlighting (manual classes) */
.kw { color: var(--syntax-keyword); font-weight: 500; }
.str { color: var(--syntax-string); }
.cmt { color: var(--syntax-comment); font-style: italic; }
.fn { color: var(--syntax-function); }
.num { color: var(--syntax-number); }
.op { color: var(--syntax-operator); }
.bi { color: var(--syntax-builtin); }

/* ---- Annotated Code Block ---- */

.code-explained {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  margin: 1.5rem 0;
  overflow: hidden;
}

.code-explained .code-header {
  padding: 0.8rem 1.2rem;
  background: var(--bg-highlight);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.code-explained .code-header .filename {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.code-explained .code-header .lang {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.code-explained pre {
  margin: 0;
  border: none;
  border-radius: 0;
}

.code-annotation {
  padding: 0.8rem 1.2rem;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.code-annotation strong {
  color: var(--accent-blue);
}

.line-highlight {
  background: rgba(139, 92, 246, 0.08);
  display: block;
  margin: 0 -1.5rem;
  padding: 0 1.5rem;
}

/* ---- Step List ---- */

.steps {
  counter-reset: step-counter;
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.steps li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 3.2rem;
  margin-bottom: 1.5rem;
}

.steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0.05rem;
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- Checklist ---- */

.checklist {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.checklist li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.8rem;
}

.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid var(--border-accent);
  border-radius: 4px;
  background: var(--bg-secondary);
}

.checklist li.checked::before {
  background: var(--accent-green);
  border-color: var(--accent-green);
}

.checklist li.checked::after {
  content: '';
  position: absolute;
  left: 0.25rem;
  top: 0.45rem;
  width: 0.6rem;
  height: 0.35rem;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}

/* ---- Terminal Block ---- */

.terminal {
  background: #0a0c10;
  border: 1px solid #1e2030;
  border-radius: var(--radius-md);
  margin: 1rem 0 1.5rem;
  overflow: hidden;
}

.terminal-header {
  background: #151820;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background: #f87171; }
.terminal-dot.yellow { background: #fbbf24; }
.terminal-dot.green { background: #34d399; }

.terminal-title {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
  font-family: var(--font-body);
}

.terminal pre {
  background: transparent;
  border: none;
  margin: 0;
  padding: 1rem 1.2rem;
  color: #a0aec0;
}

.terminal .prompt { color: var(--accent-green); }
.terminal .output { color: var(--text-secondary); }

/* ---- Progress Bar ---- */

.progress-bar {
  background: var(--bg-highlight);
  border-radius: 100px;
  height: 6px;
  margin: 1rem 0 0.5rem;
  overflow: hidden;
}

.progress-bar .fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
  transition: width 0.5s ease;
}

.progress-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: right;
}

/* ---- Day Navigation Footer ---- */

.day-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  gap: 1rem;
}

.day-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
}

.day-nav a:hover {
  background: var(--bg-highlight);
  border-color: var(--border-accent);
}

.day-nav .next {
  margin-left: auto;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  border: none;
  color: #fff;
}

.day-nav .next:hover {
  opacity: 0.9;
}

/* ---- Key Concept Box ---- */

.concept {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.concept-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-purple);
  margin-bottom: 0.8rem;
}

/* ---- Exercise Box ---- */

.exercise {
  background: var(--bg-card);
  border: 2px solid var(--accent-green);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
}

.exercise-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-green);
  margin-bottom: 0.3rem;
}

.exercise h3 {
  margin-top: 0.3rem;
  margin-bottom: 1rem;
}

/* ---- Table ---- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}

/* On a phone a table's min-content width can exceed the column it sits in —
   day-1's pattern cheat sheet needs 355px inside a 312px card — and width:100%
   cannot shrink a table below its min-content, so it pushes the whole page
   sideways instead. Let the table scroll in place. Scoped to narrow viewports
   so the desktop layout of all 34 table-bearing lessons is untouched. */
@media (max-width: 700px) {
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

th {
  background: var(--bg-highlight);
  color: var(--text-heading);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--border-accent);
}

td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

tr:hover td {
  background: var(--bg-secondary);
}

/* ---- Finish Day Progress ---- */

.finish-day-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
  background: linear-gradient(135deg, rgba(255, 115, 56, 0.08), rgba(96, 165, 250, 0.04));
  border: 1px solid rgba(255, 115, 56, 0.28);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.5rem;
  margin: 2.25rem 0 1.25rem;
}

.finish-day-kicker {
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 0.45rem;
  text-transform: uppercase;
}

.finish-day-card h2 {
  margin: 0 0 0.45rem;
}

.finish-day-card p {
  margin: 0;
}

.finish-day-status {
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-top: 0.65rem;
  min-height: 1.25rem;
}

.finish-day-button {
  align-items: center;
  background: var(--accent-orange);
  border: 1px solid rgba(255, 115, 56, 0.6);
  border-radius: var(--radius-sm);
  color: var(--text-heading);
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.75rem 1.2rem;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s, background 0.2s;
  white-space: nowrap;
}

.finish-day-button:hover {
  background: var(--accent-yellow);
  color: var(--bg-primary);
  transform: translateY(-1px);
}

.finish-day-button[data-saved="true"] {
  background: var(--accent-green);
  border-color: rgba(52, 211, 153, 0.55);
}

/* Persistent, browser-local academy notes panel. */
.course-notes { position: relative; }
.course-notes__launcher, .course-notes__panel button {
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  color: var(--text-heading);
  background: var(--bg-card);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.55rem 0.7rem;
}
.course-notes__launcher { position: fixed; right: 1rem; bottom: 1rem; z-index: 8; border-color: var(--accent-purple); box-shadow: 0 12px 28px var(--bg-primary); }
.course-notes__launcher[aria-expanded="true"] { color: var(--accent-purple); }
.course-notes__panel { position: fixed; right: 1rem; bottom: 4.25rem; z-index: 8; display: grid; gap: 0.85rem; width: min(31rem, calc(100vw - 2rem)); max-height: min(42rem, calc(100vh - 7rem)); overflow: auto; overscroll-behavior: contain; padding: 1rem; border: 1px solid var(--border-card); border-top: 2px solid var(--accent-purple); border-radius: var(--radius-md); color: var(--text-primary); background: var(--bg-secondary); box-shadow: 0 20px 52px var(--bg-primary); transition: opacity 0.25s cubic-bezier(.16,1,.3,1), transform 0.25s cubic-bezier(.16,1,.3,1); }
.course-notes__panel[hidden] { display: none; }
.course-notes__header, .course-notes__tools, .course-notes__form-header, .course-notes__actions { align-items: center; display: flex; flex-wrap: wrap; gap: 0.7rem; justify-content: space-between; }
.course-notes__header h2, .course-notes__form-header h3 { margin: 0.15rem 0 0; padding: 0; border: 0; font-size: 1.15rem; }
.course-notes__header p, .course-notes [data-notes-status], .course-notes [data-notes-limits] { color: var(--text-secondary); font-size: 0.8rem; }
.course-notes label { color: var(--text-secondary); display: grid; flex: 1 1 12rem; font-family: var(--font-mono); font-size: 0.72rem; gap: 0.35rem; }
.course-notes input, .course-notes select, .course-notes textarea { width: 100%; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); color: var(--text-primary); background: var(--bg-primary); font: inherit; padding: 0.6rem; }
.course-notes__tools label { flex-basis: 100%; }
.course-notes [data-notes-editor] { display: grid; gap: 0.7rem; padding: 0.85rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); background: var(--bg-card); }
.course-notes__list { display: grid; gap: 0.45rem; margin: 0; padding: 0; list-style: none; }
.course-notes__list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.25rem 0.7rem; padding: 0.65rem 0.75rem; border-left: 2px solid var(--accent-purple); background: var(--bg-card); }
.course-notes__list li button { justify-self: start; border: 0; padding: 0; background: transparent; text-align: left; }
.course-notes__list li span { grid-column: 1 / -1; color: var(--accent-yellow); font-family: var(--font-mono); font-size: 0.7rem; }
.course-notes__panel input:focus-visible, .course-notes__panel select:focus-visible, .course-notes__panel textarea:focus-visible, .course-notes__panel button:focus-visible, .course-notes__launcher:focus-visible { outline: 3px solid var(--accent-orange); outline-offset: 3px; }

@media (max-width: 767px) {
  .course-notes__launcher { right: 0.75rem; bottom: 0.75rem; }
  .course-notes__panel { right: 0; bottom: 0; width: 100%; max-height: min(78vh, 42rem); border-right: 0; border-bottom: 0; border-left: 0; border-radius: var(--radius-md) var(--radius-md) 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  .course-notes__panel { transition: none; }
}

/* Persistent academy Tutor panel; opposite Notes on desktop. */
.course-tutor { position: relative; color: var(--text-primary); }
.course-tutor button { border: 1px solid var(--border-accent); border-radius: var(--radius-sm); color: var(--text-heading); background: var(--bg-card); cursor: pointer; font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; padding: 0.55rem 0.7rem; }
.course-tutor button[disabled] { cursor: not-allowed; opacity: 0.55; }
.course-tutor__launcher { position: fixed; left: 1rem; bottom: 1rem; z-index: 8; border-color: var(--accent-green); box-shadow: 0 12px 28px var(--bg-primary); }
.course-tutor__launcher[aria-expanded="true"] { color: var(--accent-green); }
.course-tutor__panel { position: fixed; left: 1rem; bottom: 4.25rem; z-index: 8; display: grid; gap: 0.85rem; width: min(36rem, calc(100vw - 2rem)); max-height: min(44rem, calc(100vh - 7rem)); overflow: auto; overscroll-behavior: contain; padding: 1rem; border: 1px solid var(--border-card); border-top: 2px solid var(--accent-green); border-radius: var(--radius-md); color: var(--text-primary); background: var(--bg-secondary); box-shadow: 0 20px 52px var(--bg-primary); transition: opacity 0.25s cubic-bezier(.16,1,.3,1), transform 0.25s cubic-bezier(.16,1,.3,1); }
.course-tutor__panel[hidden], .course-tutor__attachment[hidden] { display: none; }
.course-tutor__header { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.65rem 1rem; align-items: start; }
.course-tutor__header h2 { margin: 0.15rem 0 0; padding: 0; border: 0; font-size: 1.2rem; }
.course-tutor__header p { grid-column: 1 / -1; margin: 0; color: var(--text-secondary); font-size: 0.8rem; }
.course-tutor__modes, .course-tutor__selection, .course-tutor__actions { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.course-tutor__selection { padding: 0.7rem; border-left: 2px solid var(--accent-blue); background: var(--bg-card); }
.course-tutor__selection p { flex: 1 1 100%; margin: 0; color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.72rem; overflow-wrap: anywhere; }
.course-tutor__attachment { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; padding: 0.7rem; border-left: 2px solid var(--accent-yellow); background: var(--bg-card); }
.course-tutor__attachment div { display: grid; min-width: 0; gap: 0.2rem; }
.course-tutor__attachment strong, .course-tutor__attachment span { overflow-wrap: anywhere; }
.course-tutor__attachment span { color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.68rem; }
.course-tutor__log { display: grid; gap: 0.6rem; max-height: 24rem; overflow: auto; }
.course-tutor__turn { display: grid; grid-template-columns: 4rem minmax(0, 1fr); gap: 0.65rem; padding: 0.7rem 0.8rem; border-left: 2px solid var(--accent-blue); background: var(--bg-card); }
.course-tutor__turn--assistant { border-left-color: var(--accent-green); }
.course-tutor__turn strong { color: var(--accent-blue); font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; }
.course-tutor__turn--assistant strong { color: var(--accent-green); }
.course-tutor__turn div { min-width: 0; overflow-wrap: anywhere; }
.course-tutor form { display: grid; gap: 0.5rem; }
.course-tutor form label, .course-tutor__status { color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.72rem; }
.course-tutor textarea { width: 100%; resize: vertical; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); color: var(--text-primary); background: var(--bg-primary); font: inherit; padding: 0.75rem; }
.course-tutor__status { min-height: 1.4em; margin: 0; }
.course-tutor textarea:focus-visible, .course-tutor button:focus-visible { outline: 3px solid var(--accent-orange); outline-offset: 3px; }

@media (max-width: 767px) {
  .course-tutor__launcher { left: 0.75rem; bottom: 0.75rem; }
  .course-tutor__panel { left: 0; bottom: 0; width: 100%; max-height: min(78vh, 44rem); border-right: 0; border-bottom: 0; border-left: 0; border-radius: var(--radius-md) var(--radius-md) 0 0; }
  .course-tutor__turn { grid-template-columns: 1fr; gap: 0.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  .course-tutor__panel { transition: none; }
}

/* ---- Responsive ---- */

@media (max-width: 640px) {
  html { font-size: 15px; }
  .course-container { padding: 1.5rem 1rem 3rem; }
  .course-header h1 { font-size: 1.7rem; }
  .day-nav { flex-direction: column; }
  .day-nav a { width: 100%; justify-content: center; }
  .day-meta { gap: 0.6rem; }
  .finish-day-card { grid-template-columns: 1fr; }
  .finish-day-button { width: 100%; }
}

/* ---- Print ---- */

@media print {
  body { background: #fff; color: #1a1a2e; }
  .course-container { max-width: 100%; }
  .day-nav { display: none; }
  pre { border: 1px solid #ddd; }
}

/* ---- Applied AI Engineering Academy dashboard ---- */

.academy-shell {
  margin-inline: auto;
  max-width: 1200px;
  padding-inline: clamp(1.5rem, 5vw, 4rem);
}

.academy-skip-link {
  background: var(--accent-orange);
  color: var(--bg-primary);
  left: 1rem;
  padding: 0.65rem 0.85rem;
  position: fixed;
  top: -4rem;
  z-index: 10;
}

.academy-skip-link:focus {
  top: 1rem;
}

.academy-chrome {
  border-bottom: 1px solid var(--border-subtle);
  padding-block: 1rem;
}

.academy-chrome__inner {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.academy-brand {
  color: var(--text-heading);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
}

.academy-brand::after {
  background: var(--accent-orange);
  content: "";
  display: inline-block;
  height: 1.15rem;
  margin-left: 0.35rem;
  vertical-align: -0.2rem;
  width: 0.2rem;
}

.academy-chrome p {
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 0;
  text-transform: uppercase;
}

.academy-chrome a:last-child {
  color: var(--accent-blue);
  font-size: 0.88rem;
  margin-left: auto;
}

.academy-dashboard {
  padding-block: clamp(5rem, 10vw, 9rem);
}

.academy-resume {
  background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--accent-orange);
  border-radius: 0.75rem;
  margin-bottom: 2rem;
  padding: clamp(1.5rem, 4vw, 3rem);
}

.academy-eyebrow,
.academy-module-number,
.academy-summary-label {
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0 0 0.5rem;
  text-transform: uppercase;
}

.academy-resume h1 {
  color: var(--text-heading);
  font-size: clamp(2rem, 6vw, 4rem);
  letter-spacing: -0.05em;
  line-height: 1;
  margin: 0;
  max-width: 15ch;
}

.academy-resume [data-academy-current] {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin: 1rem 0;
}

.academy-resume [data-academy-next-action] {
  color: var(--text-muted);
  margin: 1rem 0 0;
}

.continue-btn {
  background: var(--accent-orange);
  border: 1px solid var(--accent-orange);
  border-radius: 0.375rem;
  color: var(--bg-primary);
  display: inline-flex;
  font-size: 0.9rem;
  font-weight: 800;
  padding: 0.75rem 1.1rem;
  text-decoration: none;
  transition: background 0.25s cubic-bezier(.16, 1, .3, 1), color 0.25s cubic-bezier(.16, 1, .3, 1), transform 0.25s cubic-bezier(.16, 1, .3, 1);
}

.continue-btn:hover {
  background: var(--accent-yellow);
  transform: translateY(-2px);
}

.academy-summary-grid,
.academy-module-grid {
  display: grid;
  gap: 1rem;
}

.academy-summary-grid {
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  margin-bottom: 2rem;
}

.academy-summary-card,
.academy-module {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: 0.75rem;
  min-width: 0;
  padding: 1.1rem;
}

.academy-summary-value {
  color: var(--text-heading);
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}

.academy-utilities {
  border-block: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-bottom: 3rem;
  padding-block: 1rem;
}

.academy-utilities a,
.academy-module-link {
  color: var(--accent-blue);
  font-size: 0.88rem;
}

.academy-utilities button {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 0.375rem;
  color: var(--accent-blue);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  padding: 0.3rem 0.5rem;
  transition: background 0.25s cubic-bezier(.16, 1, .3, 1), border-color 0.25s cubic-bezier(.16, 1, .3, 1), color 0.25s cubic-bezier(.16, 1, .3, 1);
}

.academy-utilities button:hover {
  background: var(--bg-highlight);
  border-color: var(--accent-orange);
  color: var(--text-heading);
}

.academy-notes-panel,
.academy-search-panel,
.academy-stuck-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--accent-orange);
  border-radius: 0.75rem;
  display: grid;
  gap: 0.85rem;
  margin: 0 0 2rem;
  padding: clamp(1rem, 3vw, 1.5rem);
}

.academy-notes-panel[hidden],
.academy-search-panel[hidden],
.academy-stuck-panel[hidden] {
  display: none;
}

.academy-notes-panel header,
.academy-search-panel header,
.academy-stuck-panel header {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
}

.academy-notes-panel h2,
.academy-search-panel h2,
.academy-stuck-panel h2 {
  border: 0;
  font-size: 1.25rem;
  margin: 0;
  padding: 0;
}

.academy-notes-panel label,
.academy-search-panel label,
.academy-stuck-panel label,
.academy-notes-panel [data-academy-notes-status],
.academy-search-panel [data-academy-search-status],
.academy-stuck-panel [data-academy-stuck-status] {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin: 0;
}

.academy-notes-panel input,
.academy-search-panel input,
.academy-stuck-panel textarea {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font: inherit;
  padding: 0.65rem 0.75rem;
  width: 100%;
}

.academy-stuck-panel textarea {
  min-height: 7rem;
  resize: vertical;
}

.academy-notes-panel button,
.academy-search-panel button,
.academy-stuck-panel button {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: 0.375rem;
  color: var(--text-heading);
  cursor: pointer;
  font: 600 0.75rem/1.2 var(--font-mono);
  padding: 0.55rem 0.7rem;
  transition: background 0.25s cubic-bezier(.16, 1, .3, 1), border-color 0.25s cubic-bezier(.16, 1, .3, 1), color 0.25s cubic-bezier(.16, 1, .3, 1);
}

.academy-notes-panel button:hover,
.academy-search-panel button:hover,
.academy-stuck-panel button:hover {
  background: var(--bg-highlight);
  border-color: var(--accent-orange);
  color: var(--text-heading);
}

.academy-notes-panel ul,
.academy-search-panel ul,
.academy-stuck-panel [data-academy-stuck-list] {
  display: grid;
  gap: 0.65rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.academy-notes-panel li,
.academy-search-panel li,
.academy-stuck-item,
.academy-stuck-resolution {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0.75rem;
}

.academy-notes-panel li a,
.academy-search-panel li a,
.academy-stuck-item a {
  color: var(--accent-blue);
  font-weight: 700;
}

.academy-notes-panel li span,
.academy-search-panel li span,
.academy-stuck-item p {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  margin: 0;
}

.academy-stuck-item h3 {
  font-size: 1rem;
  margin: 0;
}

.academy-dashboard button:focus-visible,
.academy-dashboard input:focus-visible,
.academy-dashboard textarea:focus-visible,
.academy-dashboard a:focus-visible,
.academy-chrome a:focus-visible,
.academy-skip-link:focus-visible {
  outline: 3px solid var(--accent-orange);
  outline-offset: 3px;
}

.academy-phase {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

.academy-phase-title {
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-heading);
  font-size: clamp(1.35rem, 3vw, 2rem);
  margin: 0 0 1rem;
  padding-bottom: 0.7rem;
}

.academy-module-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
}

.academy-module {
  display: flex;
  flex-direction: column;
}

.academy-module-title {
  color: var(--text-heading);
  font-size: 1.05rem;
  margin: 0 0 0.6rem;
}

.academy-module-outcome {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.academy-module-status {
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  margin: 1rem 0 0.7rem;
}

.academy-module-link {
  margin-top: auto;
}

.academy-legacy-library {
  border-top: 1px solid var(--border-subtle);
  margin-top: clamp(3rem, 8vw, 6rem);
  padding-top: clamp(2rem, 5vw, 3rem);
}

.academy-legacy-library > p:not(.academy-eyebrow) {
  color: var(--text-secondary);
  margin: 0 0 1.25rem;
}

.academy-legacy-weeks {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.academy-legacy-weeks li {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: 0.75rem;
  display: grid;
  gap: 0.65rem;
  padding: 1rem;
}

.academy-legacy-weeks strong {
  color: var(--text-heading);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.academy-legacy-weeks span {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
}

.academy-legacy-weeks a {
  color: var(--accent-blue);
  font-size: 0.82rem;
}

.academy-noscript {
  border-top: 1px solid var(--border-subtle);
  padding-bottom: 3rem;
}

.academy-noscript a {
  display: block;
  margin-top: 0.5rem;
}

@media (min-width: 768px) {
  .academy-module-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .academy-module-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .academy-chrome a:last-child {
    margin-left: 0;
  }

  .academy-resume {
    padding: 1.5rem;
  }

  .continue-btn {
    justify-content: center;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .academy-search-panel,
  .academy-notes-panel,
  .academy-stuck-panel,
  .academy-utilities button,
  .academy-search-panel button,
  .academy-stuck-panel button {
    transition: none;
  }
}

.academy-lesson-stuck {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--accent-orange);
  border-radius: 0.75rem;
  display: grid;
  gap: 0.75rem;
  margin: 2rem 0;
  padding: 1rem;
}

.academy-lesson-stuck form,
.academy-lesson-stuck [data-academy-stuck-source] {
  display: grid;
  gap: 0.75rem;
}

.academy-lesson-stuck [hidden] { display: none; }
.academy-lesson-stuck label { color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.78rem; }
.academy-lesson-stuck input,
.academy-lesson-stuck select,
.academy-lesson-stuck textarea { width: 100%; margin-top: 0.3rem; padding: 0.65rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); color: var(--text-primary); background: var(--bg-primary); font: inherit; }
.academy-lesson-stuck textarea { min-height: 7rem; resize: vertical; }
.academy-lesson-stuck button { width: fit-content; padding: 0.55rem 0.75rem; border: 1px solid var(--border-accent); border-radius: 0.375rem; color: var(--text-heading); background: var(--bg-card); cursor: pointer; transition: background 0.25s cubic-bezier(.16,1,.3,1), border-color 0.25s cubic-bezier(.16,1,.3,1); }
.academy-lesson-stuck button:hover { border-color: var(--accent-orange); background: var(--bg-highlight); }
.academy-lesson-stuck button:focus-visible,
.academy-lesson-stuck input:focus-visible,
.academy-lesson-stuck select:focus-visible,
.academy-lesson-stuck textarea:focus-visible { outline: 3px solid var(--accent-orange); outline-offset: 3px; }
.academy-stuck-highlight { background: var(--bg-warning); outline: 3px solid var(--accent-orange); outline-offset: 0.35rem; }

@media (max-width: 640px) {
  .academy-notes-panel,
  .academy-search-panel,
  .academy-stuck-panel { max-height: 78vh; overflow-y: auto; overscroll-behavior: contain; }
}

@media (prefers-reduced-motion: reduce) {
  .academy-lesson-stuck button { transition: none; }
}