/* Andreas Graubach — portfolio stylesheet
   Palette: blueprint navy + paper + copper annotation accent.
   Edit tokens below to re-theme the whole site. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --ink: #16293a;
  --ink-soft: #43566a;
  --paper: #eef1ee;
  --paper-raised: #f8f9f7;
  --navy: #132a3c;
  --navy-deep: #0f2130;
  --navy-line: rgba(233, 240, 245, 0.14);
  --navy-line-strong: rgba(233, 240, 245, 0.28);
  --navy-ink: #dfe7ec;
  --navy-ink-soft: #9fb2bf;
  --accent: #c9793b;
  --accent-soft: #e7ba8c;
  --rule: #d3d7d0;
  --rule-strong: #b9bfb5;
  --focus: #1c7a6e;

  --font-display: 'Fraunces', 'Iowan Old Style', serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', monospace;

  --measure: 42rem;
  --gutter: 1.5rem;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

a:focus-visible,
button:focus-visible,
.chip:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  width: 100%;
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- top bar ---------- */

.topbar {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--navy-ink-soft);
}

.topbar .kicker {
  letter-spacing: 0.01em;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-switch a {
  text-decoration: none;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--navy-line-strong);
  border-radius: 3px;
  color: var(--navy-ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.lang-switch a:hover { border-color: var(--accent-soft); background: rgba(201,121,59,0.12); }
.lang-switch a[aria-current="true"] { background: var(--accent); border-color: var(--accent); color: var(--navy-deep); font-weight: 600; }

/* ---------- hero (blueprint panel) ---------- */

.hero {
  position: relative;
  background: var(--navy);
  color: var(--navy-ink);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, var(--navy-line) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, var(--navy-line) 0 1px, transparent 1px 48px);
  opacity: 0.9;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 55% at 78% 20%, rgba(201,121,59,0.16), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: 2.5rem 0 4rem;
  align-items: center;
}

@media (min-width: 720px) {
  .hero-inner {
    grid-template-columns: 1.35fr 0.65fr;
    padding: 2.5rem 0 5rem;
  }
}

.hero-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.02;
  margin: 0 0 0.5rem;
  color: #fff;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-soft);
  margin: 0 0 1.5rem;
  letter-spacing: 0.01em;
}

.hero-status {
  max-width: 34rem;
  color: var(--navy-ink);
  margin: 0 0 2rem;
  font-size: 1.02rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--navy-deep);
  background: var(--accent);
  padding: 0.7rem 1.1rem;
  border-radius: 3px;
  transition: background 0.15s ease, transform 0.15s ease;
}

.hero-cta:hover { background: var(--accent-soft); transform: translateY(-1px); }

.hero-photo-frame {
  position: relative;
  justify-self: center;
  width: min(78vw, 260px);
}

.hero-photo-frame img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 6px;
  filter: saturate(1.03);
}

.corner {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid var(--accent);
}
.corner.tl { top: -8px; left: -8px; border-right: none; border-bottom: none; }
.corner.br { bottom: -8px; right: -8px; border-left: none; border-top: none; }

/* ---------- generic section scaffolding ---------- */

section { position: relative; }

.section-pad { padding: 4rem 0; }
@media (min-width: 720px) { .section-pad { padding: 5.5rem 0; } }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.03em;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3.4vw, 2.1rem);
  margin: 0;
  color: var(--ink);
}

.section-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  margin-top: 0.4rem;
}

/* ---------- about ---------- */

.about-text {
  max-width: var(--measure);
}

.about-text p {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.about-text p:first-child {
  color: var(--ink);
  font-size: 1.15rem;
}

/* ---------- experience timeline ---------- */

.timeline {
  position: relative;
  max-width: 52rem;
  padding-left: 1.6rem;
  border-left: 1px solid var(--rule-strong);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.6rem;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.68rem;
  top: 0.35rem;
  width: 9px;
  height: 9px;
  background: var(--paper);
  border: 2px solid var(--accent);
  transform: rotate(45deg);
}

.timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: 0.35rem;
}

.timeline-role {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--ink);
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.timeline-place {
  font-size: 0.92rem;
  color: var(--accent);
  margin: 0 0 0.7rem;
}

.timeline-bullets {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.timeline-bullets li { margin-bottom: 0.3rem; }
.timeline-bullets li:last-child { margin-bottom: 0; }

/* ---------- engineering feature panel ---------- */

.eng-panel {
  position: relative;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  padding: 2.2rem;
  max-width: 52rem;
}

.eng-panel::before,
.eng-panel::after,
.eng-panel .corner2-a,
.eng-panel .corner2-b {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--accent);
}
.eng-panel::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.eng-panel::after { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.eng-panel .corner2-a { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.eng-panel .corner2-b { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.eng-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin: 0 0 0.4rem;
}

.eng-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0 0 0.2rem;
  color: var(--ink);
}

.eng-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 0 0 1.1rem;
}

.eng-intro {
  color: var(--ink-soft);
  max-width: 40rem;
  margin: 0 0 1.1rem;
}

.eng-bullets {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}
.eng-bullets li { margin-bottom: 0.35rem; }

/* ---------- skills ---------- */

.skill-groups {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .skill-groups { grid-template-columns: 1fr 1fr; }
}

.skill-group h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: none;
  color: var(--ink);
  margin: 0 0 0.8rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  padding: 0.35rem 0.6rem;
}

/* ---------- education / certifications grid ---------- */

.dual-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .dual-grid { grid-template-columns: 1.1fr 0.9fr; }
}

.edu-item { margin-bottom: 1.6rem; }
.edu-item:last-child { margin-bottom: 0; }

.edu-degree {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink);
  margin: 0 0 0.15rem;
}

.edu-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin: 0 0 0.4rem;
}

.edu-detail {
  color: var(--ink-soft);
  margin: 0;
  font-size: 0.95rem;
}

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

.cert-item {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--rule);
}
.cert-list .cert-item:last-child { border-bottom: 1px solid var(--rule); }

.cert-name { font-weight: 500; color: var(--ink); }
.cert-issuer { font-size: 0.85rem; color: var(--ink-soft); }
.cert-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  white-space: nowrap;
  align-self: center;
}

/* ---------- languages ---------- */

.lang-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2.2rem;
  max-width: 52rem;
}

.lang-item {
  font-size: 0.98rem;
}

.lang-item strong { color: var(--ink); font-weight: 600; }
.lang-item span { color: var(--ink-soft); font-family: var(--font-mono); font-size: 0.82rem; margin-left: 0.35rem; }

/* ---------- contact / footer (navy bookend) ---------- */

.contact {
  background: var(--navy-deep);
  color: var(--navy-ink);
}

.contact .section-label { color: var(--accent-soft); }
.contact .section-title { color: #fff; }
.contact .section-rule { background: var(--navy-line-strong); }

.contact-intro {
  max-width: 34rem;
  color: var(--navy-ink);
  margin: 0 0 2rem;
  font-size: 1.05rem;
}

.contact-grid {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: 1fr;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) {
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

.contact-card {
  border: 1px solid var(--navy-line-strong);
  padding: 1rem 1.1rem;
  border-radius: 4px;
}

.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--navy-ink-soft);
  margin: 0 0 0.3rem;
}

.contact-card a,
.contact-card span.value {
  text-decoration: none;
  color: #fff;
  font-size: 1rem;
  word-break: break-word;
}

.contact-card a:hover { color: var(--accent-soft); }

.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  padding: 0.7rem 1.1rem;
  border-radius: 3px;
  border: 1px solid var(--navy-line-strong);
  color: var(--navy-ink);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.btn:hover { border-color: var(--accent-soft); color: var(--accent-soft); }

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--navy-deep);
  font-weight: 600;
}
.btn.primary:hover { background: var(--accent-soft); color: var(--navy-deep); }

.footer-line {
  border-top: 1px solid var(--navy-line);
  padding-top: 1.4rem;
  padding-bottom: 2.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--navy-ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}