/* Shared visual language with Senior Engineer Academy. */
:root {
  --course-navy: #0b1220;
  --course-accent: #0d9488;
  --course-accent-light: #2dd4bf;
  --course-line: rgba(148, 163, 184, 0.28);
}

.md-header { box-shadow: 0 1px 0 rgba(148, 163, 184, 0.2); }
.md-header__title, .md-tabs__link { font-weight: 700; }
.md-header__title, .md-typeset h1, .md-typeset h2, .md-typeset h3 { letter-spacing: -0.025em; }
.md-content:has(.course-hero) .md-content__inner { max-width: 72rem; margin: 0 auto; padding-top: 1.5rem; }
.md-content__inner::before { display: none; }

.course-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  margin: 0 -1rem;
  padding: clamp(3rem, 7vw, 6rem) clamp(1rem, 4vw, 4rem);
  overflow: hidden;
}

.course-hero::before {
  content: "";
  position: absolute;
  top: -14rem;
  right: -12rem;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.18), transparent 68%);
  pointer-events: none;
}

.course-eyebrow {
  color: var(--course-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.course-hero h1 {
  max-width: 16ch;
  margin: 0.8rem 0 1.2rem;
  color: var(--course-navy);
  font-size: clamp(2rem, 3.2vw, 3.4rem);
  font-weight: 800;
  line-height: 1.08;
}

.course-hero h1 span { color: var(--course-accent); }

.course-hero__lead {
  max-width: 40rem;
  margin: 0;
  color: #475569;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.7;
}

.course-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.8rem; }

.md-typeset .course-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.8rem;
  padding: 0.65rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  font-weight: 700;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.md-typeset .course-button:hover { transform: translateY(-1px); }
.md-typeset .course-button--primary { color: #fff; background: var(--course-accent); box-shadow: 0 8px 24px rgba(13, 148, 136, 0.28); }
.md-typeset .course-button--secondary { color: #1e293b; background: rgba(255, 255, 255, 0.7); border-color: #cbd5e1; }
.course-hero__bio { max-width: 40rem; margin: 1.2rem 0 0; padding-left: 0.9rem; color: #475569; border-left: 2px solid var(--course-line); font-size: 0.92rem; line-height: 1.7; }
.course-hero__note { margin: 1rem 0 0; color: #64748b; font-size: 0.72rem; }

.course-terminal {
  position: relative;
  overflow: hidden;
  color: #ccfbf1;
  background: #101827;
  border: 1px solid rgba(45, 212, 191, 0.25);
  border-radius: 0.85rem;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.22);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.72rem;
  transform: perspective(1000px) rotateY(-2deg) rotateX(1deg);
}

.course-terminal__bar { display: flex; align-items: center; gap: 0.38rem; padding: 0.7rem 0.8rem; color: #64748b; background: #0b1220; border-bottom: 1px solid rgba(148, 163, 184, 0.15); }
.course-terminal__bar i { width: 0.48rem; height: 0.48rem; border-radius: 50%; background: #fb7185; }
.course-terminal__bar i:nth-child(2) { background: #fbbf24; }
.course-terminal__bar i:nth-child(3) { background: #34d399; }
.course-terminal__bar span { margin-left: 0.4rem; }
.course-terminal__body { padding: 1rem 1.1rem 1.2rem; }
.course-terminal__body p { margin: 0.7rem 0; }
.terminal-muted { margin-right: 0.65rem; color: var(--course-accent-light); }
.terminal-note { color: #64748b; }
.terminal-status { margin-top: 1.2rem; padding-top: 0.9rem; color: #94a3b8; border-top: 1px solid rgba(148, 163, 184, 0.14); }
.terminal-status span { display: inline-block; width: 0.45rem; height: 0.45rem; margin-right: 0.4rem; background: #34d399; border-radius: 50%; box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.1); }

.md-typeset h2 { margin-top: 3.2rem; font-weight: 750; }

.course-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: 1rem; margin: 2rem 0 5rem; }

.md-typeset .course-card {
  position: relative;
  min-height: 15rem;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  overflow: hidden;
  color: #0f172a;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #e2e8f0;
  border-radius: 0.85rem;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.md-typeset .course-card:hover { border-color: rgba(13, 148, 136, 0.45); box-shadow: 0 16px 42px rgba(15, 23, 42, 0.12); transform: translateY(-3px); }
.course-number { color: var(--course-accent); font-family: "JetBrains Mono", monospace; font-size: 0.68rem; font-weight: 700; }
.course-symbol { position: absolute; top: 0.6rem; right: 1.3rem; color: rgba(13, 148, 136, 0.12); font-size: 5rem; line-height: 1; }
.course-card strong { max-width: 20rem; margin: auto 0 0.6rem; font-size: clamp(1.25rem, 2.5vw, 1.7rem); line-height: 1.15; }
.course-card > span:not(.course-number, .course-symbol) { color: #64748b; }
.course-card b { margin-top: 1.2rem; padding-top: 0.8rem; color: var(--course-accent); border-top: 1px solid #e2e8f0; font-size: 0.72rem; }

[data-md-color-scheme="slate"] .course-hero h1 { color: #f8fafc; }
[data-md-color-scheme="slate"] .course-hero__lead,
[data-md-color-scheme="slate"] .course-hero__bio { color: #94a3b8; }
[data-md-color-scheme="slate"] .course-button--secondary,
[data-md-color-scheme="slate"] .course-card { color: #e2e8f0; background: rgba(15, 23, 42, 0.5); border-color: #475569; }
[data-md-color-scheme="slate"] .course-card > span:not(.course-number, .course-symbol) { color: #94a3b8; }
[data-md-color-scheme="slate"] .course-card b { border-color: #475569; }

@media (max-width: 1100px) {
  .course-hero { grid-template-columns: 1fr; padding-top: 2.5rem; }
  .course-hero h1 { max-width: none; }
  .course-terminal { max-width: 34rem; transform: none; }
}

@media (max-width: 700px) { .course-grid { grid-template-columns: 1fr; } }

@media (max-width: 560px) {
  .course-hero h1 { font-size: 2.2rem; }
  .course-actions { flex-direction: column; }
  .course-actions .course-button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}


/* Projects */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 1rem; margin: 1.5rem 0 3rem; }

.md-typeset .project-card {
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.3rem;
  color: #0f172a;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #e2e8f0;
  border-left: 3px solid var(--course-accent);
  border-radius: 0.7rem;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.md-typeset .project-card:hover { box-shadow: 0 14px 34px rgba(15, 23, 42, 0.1); transform: translateY(-2px); }
.project-card strong { margin-bottom: 0.45rem; font-size: 1.05rem; }
.project-card > span:not(.project-status) { color: #64748b; font-size: 0.78rem; line-height: 1.6; }
.project-card .project-tags { margin-top: auto; padding-top: 0.9rem; color: var(--course-accent); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }

/* Link lists (articles published elsewhere) */
.link-list { display: grid; gap: 0.4rem; margin: 1rem 0 2.5rem; }

.md-typeset .link-item {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: 0.2rem 1rem;
  padding: 0.75rem 0.9rem;
  color: #0f172a;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.md-typeset .link-item:hover { background: rgba(13, 148, 136, 0.06); border-color: rgba(13, 148, 136, 0.28); }
.link-item .link-date { grid-row: span 2; color: var(--course-accent); font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 0.7rem; padding-top: 0.15rem; }
.link-item strong { font-size: 0.92rem; font-weight: 700; }
.link-item > span:not(.link-date) { color: #64748b; font-size: 0.76rem; line-height: 1.5; }
.link-item .link-meta { display: block; margin-top: 0.3rem; color: var(--course-accent); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }

[data-md-color-scheme="slate"] .project-card { color: #e2e8f0; background: rgba(15, 23, 42, 0.5); border-color: #475569; border-left-color: var(--course-accent-light); }
[data-md-color-scheme="slate"] .project-card > span:not(.project-status) { color: #94a3b8; }
[data-md-color-scheme="slate"] .project-card .project-tags { color: var(--course-accent-light); }
[data-md-color-scheme="slate"] .link-item { color: #e2e8f0; }
[data-md-color-scheme="slate"] .link-item .link-date { color: var(--course-accent-light); }
[data-md-color-scheme="slate"] .link-item > span:not(.link-date) { color: #94a3b8; }
[data-md-color-scheme="slate"] .link-item .link-meta { color: var(--course-accent-light); }
[data-md-color-scheme="slate"] .md-typeset .link-item:hover { background: rgba(45, 212, 191, 0.08); border-color: rgba(45, 212, 191, 0.3); }

@media (max-width: 600px) {
  .md-typeset .link-item { grid-template-columns: 1fr; }
  .link-item .link-date { grid-row: auto; }
}

/* Project status badges */
.md-typeset .project-card { position: relative; }
.project-card .project-status {
  align-self: flex-start;
  margin-bottom: 0.6rem;
  padding: 0.16rem 0.5rem;
  border: 1px solid currentcolor;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  line-height: 1.5;
}

.project-card .status-ideation { color: #8b5cf6; }
.project-card .status-wip      { color: #d97706; }
.project-card .status-alpha    { color: #0ea5e9; }
.project-card .status-beta     { color: var(--course-accent); }
.project-card .status-exploring { color: #7c3aed; }
.project-card .status-prototype { color: #b45309; }

[data-md-color-scheme="slate"] .project-card .status-ideation { color: #c4b5fd; }
[data-md-color-scheme="slate"] .project-card .status-wip      { color: #fcd34d; }
[data-md-color-scheme="slate"] .project-card .status-alpha    { color: #7dd3fc; }
[data-md-color-scheme="slate"] .project-card .status-beta     { color: var(--course-accent-light); }
[data-md-color-scheme="slate"] .project-card .status-exploring { color: #c4b5fd; }
[data-md-color-scheme="slate"] .project-card .status-prototype { color: #fcd34d; }

/* Homepage: a restrained, notebook-like home for building, learning, and writing. */
.md-content:has(.home-hero) .md-content__inner {
  max-width: 58rem;
  margin: 0 auto;
  padding-top: 0;
}

.home-hero {
  max-width: 48rem;
  padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.home-eyebrow {
  margin: 0 0 0.7rem;
  color: var(--course-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.home-hero h1 {
  max-width: 15ch;
  margin: 0 0 1.5rem;
  color: var(--course-navy);
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  font-weight: 780;
  line-height: 1.02;
}

.home-hero p {
  max-width: 44rem;
  color: #475569;
  font-size: 0.98rem;
  line-height: 1.75;
}

.home-hero .home-hero__lead {
  color: #334155;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.home-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  margin-top: 2rem;
}

.md-typeset .home-links a {
  color: var(--course-accent);
  font-weight: 700;
}

.md-content:has(.home-hero) hr {
  margin: clamp(2.5rem, 7vw, 5rem) 0;
  border-color: var(--course-line);
}

.md-content:has(.home-hero) h2 {
  margin-top: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

[data-md-color-scheme="slate"] .home-hero h1 { color: #f1f5f9; }

[data-md-color-scheme="slate"] .home-hero p,
[data-md-color-scheme="slate"] .home-hero .home-hero__lead { color: #94a3b8; }

@media (max-width: 560px) {
  .home-hero { padding-top: 2.75rem; }
}