/* ==========================================================================
   yousefalhashemi.com
   ========================================================================== */

:root {
  --ink: #18181B;
  --text: #3F3F46;
  --muted: #52525B;
  --faint: #A1A1AA;
  --line: #E4E4E7;
  --line-strong: #D4D4D8;
  --chip: #F4F4F5;
  --band: #F8F8F9;
  --bg: #FFFFFF;
  --accent: #1D4ED8;
  --accent-hover: #1E3A8A;
  --accent-on-dark: #93C5FD;

  --font-body: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-head: "Space Grotesk", Inter, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-serif: "Source Serif 4", Georgia, serif;

  --radius: 10px;
  --max: 1080px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.015em;
}

p { margin: 0; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--ink);
  color: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  z-index: 10;
}
.skip-link:focus { left: 8px; }

/* Shared bits ------------------------------------------------------------ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}

.muted { color: var(--muted); }
.small { font-size: 15px; color: var(--text); }
.accent-text { color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em; }

.tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  background: var(--chip);
  padding: 3px 8px;
  border-radius: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 6px;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #3F3F46; color: #fff; }
.btn-outline { border: 1px solid var(--line-strong); color: var(--ink); }
.btn-outline:hover { border-color: var(--ink); color: var(--ink); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); color: #fff; }
.btn-small { padding: 8px 16px; }

.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.card-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}
.card-heading h2 { font-size: 22px; }
.card-body > p { color: var(--text); font-size: 15px; }
.card-link {
  margin-top: auto;
  padding-top: 8px;
  font-size: 15px;
  font-weight: 500;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.band {
  background: var(--band);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* Header & footer -------------------------------------------------------- */

.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}
.nav-brand {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.nav-brand:hover { color: var(--ink); text-decoration: none; }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 24px;
  font-size: 15px;
}
.nav-links a:not(.btn) { color: var(--text); }
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--ink); font-weight: 600; }

.site-footer { background: var(--ink); color: var(--line); }
.site-footer .container { padding-top: 48px; padding-bottom: 32px; }
.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px 24px;
}
.footer-email { color: var(--accent-on-dark); font-size: 17px; }
.footer-email:hover { color: #fff; }
.footer-links { display: flex; gap: 24px; font-size: 15px; }
.footer-links a { color: var(--line); }
.footer-links a:hover { color: #fff; }
.footer-copy {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #3F3F46;
  font-size: 13px;
  color: var(--faint);
}

/* Home ------------------------------------------------------------------- */

.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 48px;
  padding-top: 96px;
  padding-bottom: 72px;
}
.hero-text {
  flex: 999 1 520px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.hero .eyebrow { font-size: 13px; letter-spacing: 0.04em; }
.hero h1 {
  font-size: clamp(38px, 6vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.025em;
}
.hero-intro { font-size: 19px; color: var(--text); max-width: 620px; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.headshot {
  flex: 0 0 auto;
  width: 240px;
  height: 240px;
  margin: 0 auto;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 30%;
  background: var(--chip);
}

.about {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  padding-top: 72px;
  padding-bottom: 72px;
}
.about-text {
  flex: 999 1 520px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-text h2 { font-size: 28px; margin-bottom: 8px; }
.about-text p { color: var(--text); }

.now {
  flex: 1 1 280px;
  align-self: flex-start;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.now dl { margin: 0; display: flex; flex-direction: column; gap: 14px; }
.now dt { font-size: 13px; color: var(--muted); }
.now dd { margin: 0; font-weight: 500; }

.explore { padding-top: 72px; padding-bottom: 96px; }
.explore h2 { font-size: 28px; margin-bottom: 24px; }
.explore-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  color: var(--ink);
  transition: border-color 0.15s ease;
}
.explore-card:hover { border-color: var(--ink); text-decoration: none; color: var(--ink); }
.explore-title { font-family: var(--font-head); font-weight: 600; font-size: 24px; }
.explore-text { color: var(--text); font-size: 15px; }
.explore-cta { color: var(--accent); font-weight: 500; font-size: 15px; margin-top: auto; }

/* Inner pages ------------------------------------------------------------ */

.page { padding-top: 72px; padding-bottom: 96px; }
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 24px;
  margin-bottom: 40px;
}
.page-header h1 { font-size: clamp(34px, 5vw, 44px); letter-spacing: -0.02em; }
.page-header .lede { margin-top: 8px; }
.lede { color: var(--muted); font-size: 18px; }
.header-link { font-size: 15px; font-weight: 500; }

.section-title { font-size: 28px; margin: 56px 0 8px; }

/* Experience */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}
.timeline-row:last-child { border-bottom: 1px solid var(--line); }
.timeline-date { flex: 0 0 180px; padding-top: 4px; }
.timeline-body {
  flex: 999 1 480px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.timeline-body h2, .timeline-body h3 { font-size: 22px; letter-spacing: -0.01em; }
.highlights {
  margin: 0;
  padding-left: 20px;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.highlights strong { color: var(--ink); }

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 32px 64px;
  padding-top: 40px;
}
.skills > div { flex: 1 1 280px; display: flex; flex-direction: column; gap: 8px; }
.skills p:not(.eyebrow) { color: var(--text); }

/* Projects */
.featured-card {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.featured-image { flex: 1 1 380px; min-height: 280px; object-fit: cover; }
.featured-body { flex: 1 1 420px; min-width: 0; padding: 36px; gap: 14px; }
.featured-body h2 { font-size: 30px; }
.featured-body > p:not(.meta) { color: var(--text); font-size: 16px; }

.project-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.project-card { display: flex; flex-direction: column; }
.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center 55%;
  border-bottom: 1px solid var(--line);
}

/* Writing */
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { border-top: 1px solid var(--line); }
.post-list li:last-child { border-bottom: 1px solid var(--line); }
.post-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 32px;
  padding: 28px 0;
  color: var(--ink);
}
.post-row:hover { text-decoration: none; color: var(--ink); }
.post-row:hover .post-row-title { color: var(--accent); }
.post-row > time { flex: 0 0 140px; padding-top: 4px; }
.post-row-body {
  flex: 999 1 480px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.post-row-title { font-family: var(--font-head); font-weight: 600; font-size: 22px; }
.post-row-summary { color: var(--muted); font-size: 15px; }
.empty-state {
  padding: 40px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

/* Post */
.post {
  max-width: 720px;
  padding-top: 64px;
  padding-bottom: 96px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.back-link { font-size: 15px; font-weight: 500; }
.post-header { display: flex; flex-direction: column; gap: 16px; }
.post-header .meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.post-header h1 { font-size: clamp(32px, 5vw, 44px); line-height: 1.12; letter-spacing: -0.02em; }
.post-header .lede { font-size: 20px; color: var(--text); }
.post-cover { width: 100%; border-radius: 8px; }

.prose {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.7;
  color: #27272A;
}
.prose > * + * { margin-top: 22px; }
.prose h2, .prose h3 { margin-top: 40px; }
.prose h2 { font-size: 26px; }
.prose h3 { font-size: 21px; }
.prose img { border-radius: 8px; }
.prose blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--line-strong);
  color: var(--text);
  font-style: italic;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--chip);
  padding: 2px 5px;
  border-radius: 4px;
}
.prose pre {
  background: var(--ink);
  color: var(--line);
  padding: 20px 24px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}
.prose pre code { background: none; padding: 0; font-size: inherit; }
.prose .highlight { background: none; }

.post-nav {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 15px;
}
.post-nav > div { display: flex; flex-direction: column; gap: 2px; }
.post-nav-next { text-align: right; margin-left: auto; }

/* Small screens ---------------------------------------------------------- */

@media (max-width: 640px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .hero { padding-top: 56px; padding-bottom: 48px; gap: 32px; }
  .headshot { width: 180px; height: 180px; margin: 0; order: -1; }
  .about, .explore, .page { padding-top: 48px; padding-bottom: 56px; }
  .featured-body { padding: 24px; }
}