/* ============================================================
   Fonts (self-hosted, latin subset)
   ============================================================ */
@font-face {
  font-family: "Poppins";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/poppins-400.woff2") format("woff2");
}
@font-face {
  font-family: "Poppins";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/poppins-600.woff2") format("woff2");
}

/* ============================================================
   Design tokens
   ============================================================ */
:root {
  --bg-from: #536976;
  --bg-to: #292e49;
  --surface: #1f2937; /* nav bar */
  --text: #ffffff;
  --muted: rgb(255 255 255 / 0.75);
  --accent: #7dd3fc;

  --nav-h: 3.5rem;
  --maxw: 70rem;
  --pad-x: clamp(1rem, 5vw, 3rem);

  --font: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  color-scheme: dark;
}

/* ============================================================
   Reset / base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100svh;
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  background: linear-gradient(to right, var(--bg-from), var(--bg-to));
}

a {
  color: inherit;
}

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

h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Skip link */
.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  border-radius: 6px;
  transform: translateY(-150%);
  transition: transform 0.15s ease;
}
.skip-link:focus-visible {
  transform: translateY(0);
}

/* ============================================================
   Navigation
   - desktop: fixed bar at the top
   - mobile: sticky bar pinned to the bottom
   ============================================================ */
header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  height: var(--nav-h);
  background: var(--surface);
}

nav {
  width: 100%;
}

nav ul {
  display: flex;
  gap: clamp(1rem, 4vw, 2.5rem);
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

nav a:hover {
  color: var(--text);
}

/* set by main.js scroll-spy */
nav a[aria-current="true"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ============================================================
   Layout primitives
   ============================================================ */
main {
  /* leave room for the fixed top nav on desktop */
  padding-top: var(--nav-h);
}

section {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4rem) var(--pad-x);
  scroll-margin-top: calc(var(--nav-h) + 1rem);
}

section > h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 2rem;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  display: grid;
  gap: clamp(1.5rem, 5vw, 3rem);
  align-items: center;
  min-height: calc(100svh - var(--nav-h));
}

.hero__text h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  margin-bottom: 1rem;
}

.tagline {
  font-style: italic;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.hero__text p {
  margin: 0 0 1rem;
  max-width: 60ch;
}

.cta {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.6rem 1.25rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--bg-to);
  background: var(--accent);
  border-radius: 8px;
  transition: background 0.15s ease;
}
.cta:hover {
  background: #a5e0fd;
}

.hero__photo img {
  border-radius: 12px;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Two columns once there is room for the portrait */
@media (min-width: 48rem) {
  .hero {
    grid-template-columns: 3fr 2fr;
  }
  .hero__photo img {
    margin-inline: auto;
    max-width: 22rem;
  }
}

/* ============================================================
   Experience timeline
   - single vertical rail; entries alternate via :nth-child
   ============================================================ */
.timeline {
  position: relative;
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 52rem;
}

/* the rail */
.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8px;
  width: 4px;
  background: var(--text);
  border-radius: 2px;
}

.entry {
  position: relative;
  padding: 0 0 2rem 2.25rem;
}

.entry:last-child {
  padding-bottom: 0;
}

.entry h3 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.entry__meta {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.entry > p {
  margin: 0;
  color: var(--muted);
}

.entry a {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.entry a:hover {
  color: var(--accent);
}

.entry strong {
  color: var(--text);
  font-weight: 600;
}

/* the dot, sitting on the rail */
.entry::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  width: 20px;
  height: 20px;
  background: var(--text);
  border-radius: 50%;
}

/* ============================================================
   Tag chips (shared by skills + experience)
   ============================================================ */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid rgb(255 255 255 / 0.2);
  border-radius: 999px;
}

/* ============================================================
   Skills
   ============================================================ */
.skills {
  margin: 0;
  display: grid;
  gap: 1.25rem;
}

.skills > div {
  display: grid;
  gap: 0.5rem;
}

.skills dt {
  font-weight: 600;
}

.skills dd {
  margin: 0;
}

.skills .tags {
  margin-top: 0;
}

@media (min-width: 40rem) {
  .skills > div {
    grid-template-columns: 10rem 1fr;
    align-items: baseline;
    gap: 1rem;
  }
}

/* ============================================================
   Contact
   ============================================================ */
#contact address {
  font-style: normal;
  margin: 1rem 0;
}

#contact a {
  text-decoration: underline;
  text-underline-offset: 2px;
}
#contact a:hover {
  color: var(--accent);
}

.find-me {
  margin: 1.5rem 0 0.75rem;
}

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  text-decoration: none;
}
.icon-link span {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.icon-link:hover span {
  color: var(--accent);
}

/* ============================================================
   Footer
   ============================================================ */
footer {
  padding: 2rem var(--pad-x);
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ============================================================
   Mobile: move the nav to a sticky bottom bar
   ============================================================ */
@media (max-width: 47.99rem) {
  header {
    inset: auto 0 0 0; /* pin to bottom */
    border-top: 1px solid rgb(255 255 255 / 0.1);
  }

  main {
    padding-top: 0;
    padding-bottom: var(--nav-h); /* clear the bottom bar */
  }

  section {
    scroll-margin-top: 1rem;
  }

  .hero {
    min-height: calc(100svh - var(--nav-h));
    text-align: center;
  }
  .hero__photo {
    order: -1; /* avatar above the text */
  }
  .hero__photo img {
    width: 150px;
    height: 150px;
    margin-inline: auto;
    border-radius: 50%;
  }
  .hero__text p {
    margin-inline: auto;
  }

  nav a {
    font-size: 0.95rem;
  }

  .socials {
    justify-content: flex-start;
  }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}