/* ---------------------------------------------------------------
   asilkhalifa.com — portfolio
   Warm paper + ink. Light by default, dark on request or by system.
   --------------------------------------------------------------- */

:root {
  --bg:        #fbfaf8;
  --bg-soft:   #f4f1ec;
  --surface:   #ffffff;
  --text:      #17181a;
  --muted:     #6a6660;
  --line:      #e5e1d9;
  --line-soft: #efece6;
  --accent:    #a84d1c;
  --accent-dim:#f0e2d6;
  --shadow:    0 1px 2px rgba(23,24,26,.04), 0 8px 24px -12px rgba(23,24,26,.14);

  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Fraunces", ui-serif, Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --wrap: 62rem;
  --pad: clamp(1.25rem, 5vw, 3rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #111110;
    --bg-soft:   #171715;
    --surface:   #1a1917;
    --text:      #f1ede6;
    --muted:     #a19b91;
    --line:      #2b2a26;
    --line-soft: #232220;
    --accent:    #e3a273;
    --accent-dim:#2e241c;
    --shadow:    0 1px 2px rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.7);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg:        #111110;
  --bg-soft:   #171715;
  --surface:   #1a1917;
  --text:      #f1ede6;
  --muted:     #a19b91;
  --line:      #2b2a26;
  --line-soft: #232220;
  --accent:    #e3a273;
  --accent-dim:#2e241c;
  --shadow:    0 1px 2px rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.7);
  color-scheme: dark;
}

/* --- base ----------------------------------------------------- */

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.12; margin: 0; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
strong { font-weight: 600; color: var(--text); }

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

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.muted { color: var(--muted); }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--surface); color: var(--text);
  padding: .6rem 1rem; border: 1px solid var(--line); z-index: 100;
}
.skip:focus { left: .75rem; top: .75rem; }

/* --- header --------------------------------------------------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); }

.header-inner {
  display: flex; align-items: center; gap: 1.5rem;
  min-height: 3.75rem;
}

.mark {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color .2s ease;
}
.mark:hover { color: var(--text); }

.nav {
  margin-left: auto;
  display: flex; gap: 1.4rem;
  font-size: .875rem;
}
.nav a {
  color: var(--muted);
  padding-block: .25rem;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.nav a:hover { color: var(--text); }
.nav a.active { color: var(--text); border-bottom-color: var(--accent); }

.icon-btn {
  margin-left: auto;
  display: grid; place-items: center;
  width: 2.15rem; height: 2.15rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.nav + .icon-btn { margin-left: 0; }
.icon-btn:hover { color: var(--text); border-color: var(--muted); background: var(--bg-soft); }
.icon-btn svg { width: 1.05rem; height: 1.05rem; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn .moon { display: none; }
:root[data-theme="dark"] .icon-btn .sun { display: none; }
:root[data-theme="dark"] .icon-btn .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .sun { display: none; }
  :root:not([data-theme="light"]) .icon-btn .moon { display: block; }
}

@media (max-width: 44rem) {
  .nav { display: none; }
  .nav + .icon-btn { margin-left: auto; }
}

/* --- hero ----------------------------------------------------- */

.hero {
  padding-block: clamp(3.5rem, 12vh, 7rem) clamp(3rem, 8vh, 5rem);
}

.pill {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--mono);
  font-size: .72rem; letter-spacing: .04em;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .35rem .8rem .35rem .65rem;
  margin-bottom: 1.75rem;
}
.pill .dot {
  width: .45rem; height: .45rem; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent);
  animation: pulse 2.6s ease-out infinite;
}
@keyframes pulse {
  70%  { box-shadow: 0 0 0 .4rem transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@media (prefers-reduced-motion: reduce) { .pill .dot { animation: none; } }

.hero h1 {
  font-size: clamp(2.9rem, 9vw, 5.25rem);
  letter-spacing: -.025em;
  margin-bottom: 1.5rem;
}

.lede {
  font-size: clamp(1.075rem, 2.1vw, 1.3rem);
  line-height: 1.6;
  color: var(--muted);
  max-width: 40ch;
}

.actions {
  display: flex; flex-wrap: wrap; gap: .75rem;
  margin-top: 2.25rem;
}

.btn {
  font-family: var(--sans);
  font-size: .9rem; font-weight: 500;
  padding: .6rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: transform .18s ease, border-color .2s ease, background .2s ease, color .2s ease;
}
.btn:hover { border-color: var(--muted); transform: translateY(-1px); }
.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn-primary:hover { color: #17120d; }

.links {
  display: flex; flex-wrap: wrap; gap: .4rem 1.5rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--muted);
}
.links a { border-bottom: 1px solid var(--line); padding-bottom: 1px; transition: color .2s, border-color .2s; }
.links a:hover { color: var(--accent); border-color: var(--accent); }

/* --- sections ------------------------------------------------- */

.section { padding-block: clamp(2.75rem, 7vh, 4.5rem); }

.section-title {
  display: flex; align-items: baseline; gap: .85rem;
  font-size: 1.02rem;
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text);
  padding-bottom: .9rem;
  margin-bottom: 2.25rem;
  border-bottom: 1px solid var(--line);
}
.section-title .num { color: var(--accent); font-size: .8rem; }

/* entries (experience / education) */

.entry {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1.5rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line-soft);
}
.entry:first-of-type { border-top: 0; padding-top: 0; }

.entry-meta {
  display: flex; flex-direction: column; gap: .15rem;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .03em;
  color: var(--muted);
  padding-top: .35rem;
}
.entry-meta .place { color: color-mix(in srgb, var(--muted) 72%, transparent); }

.entry-body h3 { font-size: 1.32rem; letter-spacing: -.012em; }
.entry-body h3 .org { color: var(--muted); font-weight: 400; }

.role-note {
  color: var(--muted);
  font-size: .9rem;
  margin-top: .4rem;
}

.bullets { margin-top: 1rem; display: grid; gap: .7rem; }
.bullets li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: .95rem;
}
.bullets li::before {
  content: "";
  position: absolute; left: 0; top: .68em;
  width: .38rem; height: .38rem;
  border-radius: 999px;
  background: var(--accent);
  opacity: .55;
}

.chips {
  display: flex; flex-wrap: wrap; gap: .4rem;
  margin-top: 1.15rem;
}
.chips li {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .02em;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: .2rem .6rem;
}

@media (max-width: 44rem) {
  .entry { grid-template-columns: 1fr; gap: .6rem; }
  .entry-meta { flex-direction: row; gap: .75rem; padding-top: 0; }
}

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

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: 1.1rem;
}

.card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.5rem;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}
.card header {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  margin-bottom: .8rem;
}
.card h3 { font-size: 1.22rem; letter-spacing: -.01em; }
.card .tag {
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 999px;
  padding: .2rem .55rem;
  white-space: nowrap;
}
.card p { color: var(--muted); font-size: .93rem; }
.card .chips { margin-top: auto; padding-top: 1.15rem; }
.card-note {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--muted);
  margin-top: .9rem;
}
.card-note a { border-bottom: 1px solid var(--line); transition: color .2s, border-color .2s; }
.card-note a:hover { color: var(--accent); border-color: var(--accent); }

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

.skills { display: grid; gap: 0; }
.skills > div {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1.5rem;
  padding-block: .95rem;
  border-top: 1px solid var(--line-soft);
}
.skills > div:first-child { border-top: 0; padding-top: 0; }
.skills dt {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: .18rem;
}
.skills dd { margin: 0; font-size: .95rem; }

@media (max-width: 44rem) {
  .skills > div { grid-template-columns: 1fr; gap: .3rem; }
}

/* --- contact + footer ----------------------------------------- */

.contact-lede {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--muted);
  max-width: 46ch;
}

.site-footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem;
  padding-block: 2.25rem 3rem;
  margin-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--muted);
}

/* --- reveal on scroll ----------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .6s cubic-bezier(.22,.61,.36,1), transform .6s cubic-bezier(.22,.61,.36,1);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .card:hover, .btn:hover { transform: none; }
}

/* --- print (Save as PDF gives a clean one-page-ish résumé) ----- */

@media print {
  :root {
    --bg: #fff; --bg-soft: #fff; --surface: #fff;
    --text: #000; --muted: #333; --line: #bbb; --line-soft: #ddd;
    --accent: #000; --accent-dim: #fff;
  }
  body { font-size: 10.5pt; line-height: 1.42; }
  .site-header, .actions, .icon-btn, .skip, .site-footer, .pill { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .wrap { max-width: none; padding-inline: 0; }
  .hero { padding-block: 0 1rem; }
  .hero h1 { font-size: 24pt; margin-bottom: .35rem; }
  .lede { font-size: 10.5pt; max-width: none; }
  .links { margin-top: .6rem; padding-top: .5rem; gap: .2rem .9rem; font-size: 8.5pt; }
  .links a { border: 0; }
  .section { padding-block: .9rem 0; break-inside: avoid; }
  .section-title { font-size: 10pt; margin-bottom: .8rem; padding-bottom: .3rem; }
  .entry, .card, .skills > div { break-inside: avoid; padding-block: .7rem; }
  .card { border: 1px solid var(--line); box-shadow: none; }
  .cards { grid-template-columns: 1fr; gap: .6rem; }
  .chips li { border-color: #ccc; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 7.5pt; color: #555; }
  .nav a::after, .btn::after { content: ""; }
}