/* ===================================================================
   Jessica Liu — personal portfolio
   Editorial style: warm ivory, ink, deep-pine accent. Fraunces + Inter.
   =================================================================== */

:root {
  --paper:   #f6f3ec;
  --paper-2: #efeade;
  --ink:     #1b1c18;
  --muted:   #6c6a60;
  --line:    rgba(27,28,24,.14);
  --line-2:  rgba(27,28,24,.08);
  --accent:  #26483a;   /* deep pine */
  --accent-h:#2f5e4a;
  --gold:    #a9884f;

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --wrap: 1060px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.7;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
::selection { background: var(--accent); color: var(--paper); }

.wrap { width: min(var(--wrap), 100% - 3rem); margin-inline: auto; }

/* reading progress */
.progress { position: fixed; inset: 0 auto auto 0; height: 2px; width: 0; background: var(--accent); z-index: 60; transition: width .1s linear; }

/* ---- header ---- */
.head {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1rem clamp(1.5rem, 5vw, 3rem);
  border-bottom: 1px solid transparent; transition: background .3s, border-color .3s;
}
.head.is-stuck {
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(8px); border-color: var(--line-2);
}
.head__brand { font-family: var(--serif); font-weight: 600; font-size: 1.15rem; letter-spacing: -.01em; color: var(--ink); text-decoration: none; }
.head__nav { display: flex; gap: 1.5rem; margin-left: auto; }
.head__nav a {
  position: relative; color: var(--muted); text-decoration: none;
  font-size: .82rem; font-weight: 500; letter-spacing: .02em; text-transform: uppercase;
  transition: color .2s;
}
.head__nav a::after { content: ""; position: absolute; left: 0; bottom: -4px; height: 1px; width: 0; background: var(--accent); transition: width .25s var(--ease); }
.head__nav a:hover { color: var(--ink); }
.head__nav a.is-active { color: var(--accent); }
.head__nav a.is-active::after { width: 100%; }
.head__cta {
  font: inherit; font-size: .78rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  color: var(--accent); background: none; border: 1px solid var(--accent); border-radius: 999px;
  padding: .5rem 1rem; cursor: pointer; transition: background .2s, color .2s;
}
.head__cta:hover { background: var(--accent); color: var(--paper); }

/* ---- hero ---- */
.hero { padding: clamp(3rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 5rem); }
.hero__grid { display: grid; grid-template-columns: 1.6fr .9fr; gap: clamp(2rem, 6vw, 5rem); align-items: end; }
.kicker { font-size: .8rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); margin: 0 0 1.4rem; }
.hero__name {
  font-family: var(--serif); font-weight: 600; color: var(--ink);
  font-size: clamp(3.4rem, 12vw, 7.5rem); line-height: .92; letter-spacing: -.02em; margin: 0 0 1.8rem;
}
.hero__intro { font-size: clamp(1.05rem, 1.8vw, 1.3rem); max-width: 44ch; color: var(--ink); margin: 0 0 2rem; }
.hero__links { display: flex; align-items: center; gap: 1.6rem; flex-wrap: wrap; font-size: .95rem; }
.hero__links a { color: var(--accent); text-decoration: none; font-weight: 600; position: relative; }
.hero__links a::after { content: ""; position: absolute; left: 0; bottom: -3px; height: 1px; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease); }
.hero__links a:hover::after { transform: scaleX(1); }
.hero__links span { color: var(--muted); }

.hero__meta { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.hero__meta dl { margin: 0; display: grid; gap: 1.1rem; }
.hero__meta dt { font-size: .72rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: .15rem; }
.hero__meta dd { margin: 0; font-family: var(--serif); font-size: 1.05rem; color: var(--ink); }

/* ---- sections ---- */
.sec { padding: clamp(3rem, 8vw, 6rem) 0; }
.sec--tint { background: var(--paper-2); }
.sec__head { display: flex; align-items: baseline; gap: 1rem; margin: 0 0 2.6rem; }
.sec__num { font-family: var(--sans); font-size: .8rem; font-weight: 600; color: var(--gold); letter-spacing: .05em; }
.sec__label { font-family: var(--serif); font-weight: 600; font-size: clamp(1.7rem, 4vw, 2.5rem); color: var(--ink); letter-spacing: -.01em; }
.sec__head::after { content: ""; flex: 1; height: 1px; background: var(--line); align-self: center; }

/* ---- about ---- */
.about { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.about__text p { margin: 0 0 1.2rem; max-width: 58ch; }
.about__text p:last-child { margin-bottom: 0; }
.figs { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.4rem; }
.figs li { border-top: 1px solid var(--line); padding-top: 1rem; }
.figs__n { display: block; font-family: var(--serif); font-size: 2.6rem; line-height: 1; color: var(--accent); font-weight: 600; }
.figs__l { display: block; margin-top: .45rem; font-size: .9rem; color: var(--muted); }

/* ---- experience ---- */
.exp { display: grid; grid-template-columns: 200px 1fr; gap: clamp(1.2rem, 4vw, 3rem); padding: 2rem 0; border-top: 1px solid var(--line); }
.exp:last-child { border-bottom: 1px solid var(--line); }
.exp__meta { display: flex; flex-direction: column; gap: .3rem; padding-top: .35rem; }
.exp__years { font-family: var(--serif); font-size: 1.05rem; color: var(--ink); font-weight: 500; }
.exp__loc { font-size: .82rem; color: var(--muted); letter-spacing: .02em; }
.exp__role { font-family: var(--serif); font-weight: 600; font-size: 1.5rem; color: var(--ink); margin: 0 0 .35rem; letter-spacing: -.01em; }
.exp__titles { margin: 0 0 1.1rem; color: var(--accent); font-weight: 500; font-size: .95rem; }
.exp__titles span { color: var(--muted); font-weight: 400; }
.exp__body ul { margin: 0; padding: 0; list-style: none; display: grid; gap: .7rem; }
.exp__body li { position: relative; padding-left: 1.3rem; color: var(--ink); font-size: .98rem; }
.exp__body li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border: 1px solid var(--gold); border-radius: 50%; }
.exp__body strong { font-weight: 600; color: var(--accent); }

/* ---- education ---- */
.edu { display: grid; gap: 0; }
.edu__row { display: grid; grid-template-columns: 200px 1fr; gap: clamp(1.2rem, 4vw, 3rem); padding: 1.6rem 0; border-top: 1px solid var(--line); align-items: baseline; }
.edu__row:last-child { border-bottom: 1px solid var(--line); }
.edu__year { font-family: var(--serif); font-size: 1.05rem; color: var(--muted); }
.edu__row h3 { font-family: var(--serif); font-weight: 600; font-size: 1.35rem; color: var(--ink); margin: 0 0 .3rem; }
.edu__row p { margin: 0; color: var(--muted); font-size: .95rem; }

/* ---- skills ---- */
.skills { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem, 4vw, 3rem) clamp(2rem, 6vw, 5rem); }
.skills__g h4 { font-size: .76rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--gold); margin: 0 0 .7rem; }
.skills__g p { margin: 0; font-family: var(--serif); font-size: 1.15rem; line-height: 1.6; color: var(--ink); }

/* ---- contact ---- */
.sec--contact { background: var(--accent); color: var(--paper); }
.sec--contact .sec__label { color: var(--paper); }
.sec--contact .sec__num { color: var(--gold); }
.sec--contact .sec__head::after { background: rgba(246,243,236,.25); }
.contact__lead { font-family: var(--serif); font-size: clamp(1.4rem, 3.5vw, 2.1rem); line-height: 1.35; max-width: 22ch; margin: 0 0 2.5rem; color: var(--paper); }
.contact__links { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: rgba(246,243,236,.2); border: 1px solid rgba(246,243,236,.2); }
.contact__links a { display: flex; flex-direction: column; gap: .4rem; padding: 1.6rem; text-decoration: none; background: var(--accent); color: var(--paper); transition: background .2s; }
.contact__links a:hover { background: var(--accent-h); }
.contact__k { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--gold); }
.contact__v { font-family: var(--serif); font-size: 1.25rem; word-break: break-word; }

/* ---- footer ---- */
.foot { padding: 2rem 0; background: var(--ink); color: #cfccc2; }
.foot__inner { display: flex; align-items: center; gap: 1rem; }
.foot__mark { display: grid; place-items: center; width: 2rem; height: 2rem; border: 1px solid var(--gold); border-radius: 50%; font-family: var(--serif); font-size: .78rem; color: var(--gold); }
.foot__inner p { margin: 0; font-size: .88rem; }
.foot__top { margin-left: auto; color: #cfccc2; text-decoration: none; font-size: .85rem; }
.foot__top:hover { color: #fff; }

/* ---- reveal ---- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---- responsive ---- */
@media (max-width: 820px) {
  .hero__grid, .about, .skills, .contact__links { grid-template-columns: 1fr; }
  .hero__meta { border-top: none; padding-top: 0; }
  .exp, .edu__row { grid-template-columns: 1fr; gap: .6rem; }
  .head__nav { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===================================================================
   PRINT — clean résumé
   =================================================================== */
@media print {
  @page { margin: 14mm; }
  :root { --paper: #fff; --paper-2: #fff; }
  body { background: #fff; color: #000; font-size: 10.5pt; line-height: 1.4; }
  .progress, .head, .foot, .hero__links, .head__cta { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero { padding: 0 0 .6rem; }
  .hero__grid, .about, .skills { display: block; }
  .hero__name { font-size: 26pt; margin-bottom: .4rem; }
  .hero__meta { margin-top: .5rem; }
  .hero__meta dl { grid-template-columns: repeat(2, 1fr); }
  .sec { padding: .6rem 0; }
  .sec--tint, .sec--contact { background: #fff; }
  .sec--contact, .contact__lead, .contact__v, .contact__k { color: #000 !important; }
  .sec__label { color: #000; font-size: 14pt; }
  .exp, .edu__row { grid-template-columns: 130px 1fr; page-break-inside: avoid; padding: .5rem 0; }
  .figs { grid-template-columns: repeat(3,1fr); gap: 1rem; margin-top: 1rem; }
  .figs__n, .exp__role, .exp__titles, .contact__v, .skills__g p { color: #000 !important; }
  .contact__links { border: none; background: none; }
  .contact__links a { background: none !important; padding: .2rem 0; }
  a { color: #000; }
}