:root {
  --ink: #0b1b33;
  --paper: #f5f3ee;
  --surface: #ffffff;
  --line: #1e4fde;
  --current: #ff6a13;
  --muted: #9aa3b2;
  --border: #d8d3c6;
  --font-display: "Archivo", sans-serif;
  --font-body: "Public Sans", sans-serif;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
}

a { color: var(--line); }

main { max-width: 64rem; margin: 0 auto; padding: 2rem 1.5rem 4rem; }

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  border-bottom: 3px solid var(--ink);
  flex-wrap: wrap;
}
.site-nav .brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}
.site-nav nav { display: flex; gap: 1rem; }
.site-nav nav a { color: var(--ink); text-decoration: none; font-weight: 700; }
.site-nav nav a:hover { color: var(--line); }

.line-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  background: var(--surface);
}
.line-switch:hover { background: var(--line); color: var(--surface); border-color: var(--line); }
.line-switch__current { color: var(--line); }
.line-switch:hover .line-switch__current { color: var(--surface); }

/* Footer */
.site-footer {
  padding: 1.5rem;
  border-top: 3px solid var(--ink);
  font-size: 0.9rem;
  max-width: 52rem;
  margin: 0 auto;
}
.contact a { color: var(--ink); }

/* Home hero */
.hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  margin: 1.5rem 0 0.25rem;
}
.hero__tagline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--line);
  margin: 0 0 1.5rem;
}
.hero__summary { max-width: 38rem; margin-bottom: 2rem; }
.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.button {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  text-decoration: none;
  padding: 0.6rem 1.1rem;
  border: 2px solid var(--ink);
  border-radius: 0.4rem;
  color: var(--ink);
}
.button:hover { background: var(--ink); color: var(--paper); }

/* Metro line */
.metro-line {
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  border-left: 6px solid var(--muted);
  margin-left: 1.5rem;
}
.station { position: relative; padding: 0 0 2rem 2rem; }
.station::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 0.35rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--paper);
  border: 4px solid var(--muted);
}
.station--interchange::before {
  width: 24px;
  height: 24px;
  left: -15px;
  border-width: 5px;
}
.station--current::before {
  border-color: var(--current);
  background: var(--current);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255, 106, 19, 0.25); }
  50% { box-shadow: 0 0 0 10px rgba(255, 106, 19, 0.12); }
}
.station summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
}
.station summary::-webkit-details-marker { display: none; }
.station__label {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.15rem;
}
.station--current .station__label { color: var(--current); }
.station__meta { color: var(--muted); font-size: 0.9rem; }
.station__badge {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--current);
  color: var(--surface);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}
.station__detail {
  margin: 0.5rem 0 0;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 0.5rem;
  max-width: 34rem;
}

/* CV / timetable page */
.timetable h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin: 1.5rem 0 0.25rem;
}
.timetable__intro { color: var(--muted); margin-bottom: 2rem; }
.timetable h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.3rem;
  margin: 2.5rem 0 1rem;
  border-bottom: 3px solid var(--ink);
  padding-bottom: 0.4rem;
}

.timetable-row { border-top: 2px solid var(--border); padding: 1.25rem 0; }
.timetable-row:first-of-type { border-top: none; }
.timetable-row__head {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 900;
}
.timetable-row__period { font-variant-numeric: tabular-nums; color: var(--line); }
.timetable-row__company { color: var(--muted); font-weight: 700; font-family: var(--font-body); }
.timetable-row ul { margin: 0.75rem 0 0; padding-left: 1.2rem; }
.timetable-row li { margin-bottom: 0.35rem; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
  align-items: start;
}
.skills-grid dt { font-family: var(--font-display); font-weight: 900; color: var(--line); margin-bottom: 0.4rem; }
.skills-grid dd { margin: 0; color: var(--ink); }

.timetable .edu-list, .timetable .cert-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.timetable .edu-list li, .timetable .cert-list li {
  border-top: 2px solid var(--border);
  padding: 0.75rem 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.timetable .edu-list li:first-child, .timetable .cert-list li:first-child { border-top: none; }

/* Projects / correspondances page */
.correspondances {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}
.project-card {
  border: 3px solid var(--ink);
  border-radius: 0.5rem;
  padding: 1.25rem;
  background: var(--surface);
  min-width: 0;
}
.project-card code { overflow-wrap: break-word; }
.project-card h2 { font-family: var(--font-display); font-weight: 900; margin: 0 0 0.5rem; }
.project-card p { margin: 0 0 0.75rem; }
.project-card__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.5rem 0 0.75rem; padding: 0; list-style: none; }
.project-card__tags li {
  font-size: 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
}
.project-card__link { font-weight: 700; }
.project-card__badge {
  display: inline-block;
  font-size: 0.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--line);
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* Small screens */
@media (max-width: 32rem) {
  .site-nav { padding: 0.75rem 1rem; gap: 1rem; }
  main, .site-footer { padding-left: 1rem; padding-right: 1rem; }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .button { text-align: center; }
  .timetable-row__head, .timetable .edu-list li, .timetable .cert-list li {
    flex-direction: column;
    align-items: flex-start;
  }
  .correspondances { grid-template-columns: 1fr; }
}