/* AMDE 155 lesson page: all styling is included in this one HTML file. */
.amde155-box-lesson {
  --ink: #182033;
  --muted: #596579;
  --line: #dce3ed;
  --blue: #2855d9;
  --intro: #f2a65a; /* warm orange accent, not the green used in the AMDE 355 template */
  --paper: #f7f8fb;
}
.amde155-box-lesson *, .amde155-box-lesson *::before, .amde155-box-lesson *::after {
  box-sizing: border-box;
}
.amde155-box-lesson { scroll-behavior: smooth; }
.amde155-box-lesson {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
.amde155-box-lesson code, .amde155-box-lesson pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.amde155-box-lesson code {
  background: #edf1f7;
  border-radius: 4px;
  padding: 2px 5px;
  font-size: .92em;
  overflow-wrap: anywhere;
}
.amde155-box-lesson .page { width: min(1120px, 92%); margin: 0 auto; padding: 28px 0 44px; }
.amde155-box-lesson .hero {
  background: #111827;
  color: white;
  padding: clamp(24px, 5vw, 48px);
  border-radius: 18px;
  margin-bottom: 28px;
}
.amde155-box-lesson .eyebrow {
  color: var(--intro);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 800;
}
.amde155-box-lesson .hero h1 {
  color: white;
  font-size: clamp(2.2rem, 6vw, 4.25rem);
  line-height: 1.04;
  letter-spacing: -.045em;
  margin: 12px 0;
}
.amde155-box-lesson .hero p { color: #e0e7f1; max-width: 760px; }
.amde155-box-lesson .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.amde155-box-lesson .chip { border: 1px solid #69758a; border-radius: 999px; padding: 4px 11px; font-size: .82rem; color: white; }
.amde155-box-lesson .section { margin: 32px 0; }
.amde155-box-lesson .section > h2 { font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.2; margin: 0 0 10px; }
.amde155-box-lesson .muted { color: var(--muted); }
.amde155-box-lesson .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 14px; }
.amde155-box-lesson .card { border: 1px solid var(--line); border-radius: 13px; padding: 20px; background: white; min-width: 0; }
.amde155-box-lesson .card h3 { font-size: 1.12rem; margin: 0 0 8px; }
.amde155-box-lesson .number { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: #e8edff; color: #2447b6; font-weight: 800; margin-bottom: 12px; }
.amde155-box-lesson .callout { background: #eef3ff; border-left: 4px solid var(--blue); padding: 14px 17px; border-radius: 7px; margin: 16px 0; }
.amde155-box-lesson .callout.orange { background: #fff4e8; border-left-color: var(--intro); }
.amde155-box-lesson .code {
  background: #101827;
  color: #eef3ff;
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
  margin: 12px 0;
  font: .86rem/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}
.amde155-box-lesson .code code { background: transparent; color: inherit; padding: 0; font: inherit; overflow-wrap: normal; }
.amde155-box-lesson .compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 16px 0; }
.amde155-box-lesson .compare-panel { border: 1px solid var(--line); border-radius: 13px; padding: 16px; min-width: 0; background: white; }
.amde155-box-lesson .measure {
  width: 100%;
  height: 120px;
  border: 10px solid #2855d9;
  background: #dce6ff;
  padding: 18px;
  margin: 14px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: .85rem;
  font-weight: 700;
}
.amde155-box-lesson .measure.content { box-sizing: content-box; }
.amde155-box-lesson .measure.border { box-sizing: border-box; }
.amde155-box-lesson .demo-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 16px 0; }
.amde155-box-lesson .demo-card { background: #dce6ff; border: 2px solid #2855d9; border-radius: 9px; min-height: 105px; padding: 16px; display: flex; align-items: center; justify-content: center; text-align: center; font-weight: 700; }
.amde155-box-lesson .demo-card:nth-child(2) { background: #fff0dd; border-color: #d9852b; }
.amde155-box-lesson .demo-card:nth-child(3) { background: #e9e3ff; border-color: #7557bd; }
.amde155-box-lesson .steps li { margin: 8px 0; }
.amde155-box-lesson .checklist { list-style: none; padding: 0; }
.amde155-box-lesson .checklist li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.amde155-box-lesson .checklist li::before { content: "□"; font-weight: 800; color: var(--blue); margin-right: 10px; }
.amde155-box-lesson .table-wrap { overflow-x: auto; }
.amde155-box-lesson table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.amde155-box-lesson th, .amde155-box-lesson td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.amde155-box-lesson th { background: #f0f3f8; }
.amde155-box-lesson .footer { background: #111827; color: white; padding: 22px; border-radius: 13px; margin-top: 28px; }
.amde155-box-lesson .footer h2 { color: white; margin-top: 0; }
.amde155-box-lesson .footer p { color: #e0e7f1; }
@media screen and (max-width: 700px) {
  .amde155-box-lesson .demo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .amde155-box-lesson .demo-card:last-child { grid-column: 1 / -1; }
}
@media screen and (max-width: 600px) {
  .amde155-box-lesson .page { width: min(100% - 24px, 1120px); padding-top: 12px; }
  .amde155-box-lesson .card { padding: 15px; }
  .amde155-box-lesson .code { font-size: .78rem; padding: 13px; }
  .amde155-box-lesson .compare { grid-template-columns: 1fr; }
  .amde155-box-lesson .demo-grid { grid-template-columns: 1fr; }
  .amde155-box-lesson .demo-card:last-child { grid-column: auto; }
}

/* Syntax colors for lesson code samples */
.amde155-box-lesson .code .c, .amde155-box-lesson .code .c1, .amde155-box-lesson .code .cm { color: #9aa9c1; font-style: italic; }
.amde155-box-lesson .code .k, .amde155-box-lesson .code .kd, .amde155-box-lesson .code .kn, .amde155-box-lesson .code .kp { color: #ff9f7f; }
.amde155-box-lesson .code .nt, .amde155-box-lesson .code .nc, .amde155-box-lesson .code .nf { color: #82d9ff; }
.amde155-box-lesson .code .na, .amde155-box-lesson .code .nd { color: #c7a6ff; }
.amde155-box-lesson .code .s, .amde155-box-lesson .code .s1, .amde155-box-lesson .code .s2 { color: #b8f28b; }
.amde155-box-lesson .code .m, .amde155-box-lesson .code .mi, .amde155-box-lesson .code .mf { color: #ffd479; }
.amde155-box-lesson .code .p, .amde155-box-lesson .code .o { color: #d8e2f3; }
.amde155-box-lesson .code .err { color: #ff7777; text-decoration: underline wavy; }