/* Databricks Career Hub — design system
   Dark, recruiter-grade, zero dependencies. Track accents:
   brand #FF3621 · DE teal #3DD6B5 · RSA orange #FFA04D · Prep violet #B79CFF */

:root {
  --bg: #0b0e14;
  --surface: #121723;
  --surface-2: #181f2e;
  --border: #232c3d;
  --text: #e8ecf4;
  --muted: #9aa6ba;
  --faint: #6b7689;
  --brand: #ff3621;
  --brand-soft: rgba(255, 54, 33, 0.12);
  --de: #3dd6b5;
  --de-soft: rgba(61, 214, 181, 0.12);
  --rsa: #ffa04d;
  --rsa-soft: rgba(255, 160, 77, 0.12);
  --prep: #b79cff;
  --prep-soft: rgba(183, 156, 255, 0.12);
  --code-bg: #0e1320;
  --radius: 12px;
  --maxw: 1080px;
  --content-w: 860px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--de); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: 2.1rem; margin: 0.2em 0 0.4em; }
h2 { font-size: 1.45rem; margin: 2.2em 0 0.6em; padding-top: 0.6em; border-top: 1px solid var(--border); }
h3 { font-size: 1.12rem; margin: 1.6em 0 0.5em; }
h2:first-child, h3:first-child { margin-top: 0; border-top: none; padding-top: 0; }

p { margin: 0.7em 0; }
ul, ol { padding-left: 1.4em; }
li { margin: 0.35em 0; }
strong { color: #fff; }
hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }

/* ---------- top navigation ---------- */

.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 0.75rem 1.25rem;
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.topnav .brand {
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-right: auto;
  white-space: nowrap;
}

.topnav .brand .dot { color: var(--brand); }

.topnav a.navlink {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: 8px;
}

.topnav a.navlink:hover { color: var(--text); text-decoration: none; background: var(--surface-2); }
.topnav a.navlink.active { color: #fff; background: var(--surface-2); }

/* ---------- layout ---------- */

.page {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 2.2rem 1.25rem 4rem;
}

.page.wide { max-width: var(--maxw); }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--faint);
  margin-bottom: 1.2rem;
}
.breadcrumb a { color: var(--muted); }

.page-head { margin-bottom: 1.8rem; }
.page-head .lede { color: var(--muted); font-size: 1.08rem; margin-top: 0.4em; }

/* track badges */
.track-badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}
.track-badge.de { color: var(--de); background: var(--de-soft); }
.track-badge.rsa { color: var(--rsa); background: var(--rsa-soft); }
.track-badge.prep { color: var(--prep); background: var(--prep-soft); }
.track-badge.brand { color: var(--brand); background: var(--brand-soft); }
.track-badge.open { color: var(--de); background: var(--de-soft); }

/* ---------- hero (index) ---------- */

.hero {
  padding: 3.5rem 0 2.5rem;
}
.hero h1 { font-size: 2.6rem; max-width: 21ch; }
.hero .lede { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.hero .accent { color: var(--brand); }

.stat-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.4rem 0; }
.stat-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.stat-chip b { color: var(--text); }

.cta-row { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1.6rem; }
.btn {
  display: inline-block;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
}
.btn:hover { text-decoration: none; background: var(--surface-2); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }

/* ---------- cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1.2rem 0;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.3rem;
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { text-decoration: none; border-color: var(--faint); transform: translateY(-2px); }
.card h3 { margin: 0.3rem 0 0.4rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.card .num {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--faint);
  letter-spacing: 0.06em;
}
.card.de:hover { border-color: var(--de); }
.card.rsa:hover { border-color: var(--rsa); }
.card.prep:hover { border-color: var(--prep); }

/* ---------- callouts ---------- */

.callout {
  border: 1px solid var(--border);
  border-left: 4px solid var(--faint);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.9rem 1.1rem;
  margin: 1.2rem 0;
  font-size: 0.95rem;
}
.callout > :first-child { margin-top: 0; }
.callout > :last-child { margin-bottom: 0; }
.callout.tip { border-left-color: var(--de); }
.callout.warn { border-left-color: var(--rsa); }
.callout.story { border-left-color: var(--brand); background: linear-gradient(0deg, var(--brand-soft), var(--brand-soft)), var(--surface); }
.callout.story::before {
  content: "STORY HOOK — ANSWER FROM YOUR EXPERIENCE";
  display: block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--brand);
  margin-bottom: 0.4rem;
}
.callout.interview { border-left-color: var(--prep); }
.callout.interview::before {
  content: "LIKELY INTERVIEW QUESTION";
  display: block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--prep);
  margin-bottom: 0.4rem;
}

/* ---------- code ---------- */

code {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.86em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  color: #c9d6f0;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  overflow-x: auto;
  line-height: 1.55;
  margin: 1.1rem 0;
}
pre code { background: none; border: none; padding: 0; font-size: 0.84rem; color: #c9d6f0; }

/* ---------- tables ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.92rem;
}
th, td {
  text-align: left;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }
tr:hover td { background: rgba(255, 255, 255, 0.015); }

/* ---------- details / accordions ---------- */

details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  margin: 0.7rem 0;
}
details summary { cursor: pointer; font-weight: 600; color: var(--text); }
details[open] summary { margin-bottom: 0.5rem; }

/* ---------- prev/next page nav ---------- */

.pagenav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
}
.pagenav a {
  color: var(--muted);
  max-width: 48%;
}
.pagenav a:hover { color: var(--text); }
.pagenav .label { display: block; font-size: 0.75rem; color: var(--faint); text-transform: uppercase; letter-spacing: 0.08em; }
.pagenav .next { text-align: right; margin-left: auto; }

/* ---------- study-plan checklist ---------- */

.check-group { margin: 1rem 0 1.6rem; }
.check-item {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.9rem;
  margin: 0.45rem 0;
  cursor: pointer;
  font-size: 0.95rem;
}
.check-item input[type="checkbox"] {
  margin-top: 0.25rem;
  accent-color: var(--brand);
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}
.check-item:has(input:checked) { opacity: 0.55; }
.check-item:has(input:checked) .check-label { text-decoration: line-through; }

.progress-wrap {
  position: sticky;
  top: 3.6rem;
  z-index: 10;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 1rem;
  margin: 1rem 0 1.5rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.progress-bar { height: 6px; background: var(--surface-2); border-radius: 999px; margin-top: 0.45rem; overflow: hidden; }
.progress-bar > div { height: 100%; width: 0; background: var(--brand); border-radius: 999px; transition: width 0.2s ease; }

/* ---------- timeline (portfolio) ---------- */

.timeline { border-left: 2px solid var(--border); margin: 1.5rem 0 1.5rem 0.4rem; padding-left: 1.4rem; }
.timeline-item { position: relative; margin-bottom: 1.8rem; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.85rem;
  top: 0.4rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--brand);
  border: 2px solid var(--bg);
}
.timeline-item .when { font-size: 0.82rem; color: var(--faint); text-transform: uppercase; letter-spacing: 0.05em; }
.timeline-item h3 { margin: 0.15rem 0 0.1rem; }
.timeline-item .where { color: var(--muted); font-size: 0.95rem; margin-bottom: 0.4rem; }

.pill-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0.6rem 0; }
.pill {
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.18rem 0.65rem;
}

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--border);
  padding: 1.6rem 1.25rem 2.2rem;
  text-align: center;
  color: var(--faint);
  font-size: 0.87rem;
}
footer a { color: var(--muted); margin: 0 0.5rem; }

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  .hero h1 { font-size: 1.9rem; }
  h1 { font-size: 1.7rem; }
  .topnav { gap: 0.4rem; }
  .pagenav { flex-direction: column; }
  .pagenav a { max-width: 100%; }
  .pagenav .next { text-align: left; }
}

@media print {
  .topnav, .pagenav, footer { display: none; }
  body { background: #fff; color: #111; }
}