/* ---------------------------------------------------------------
   Tony Chen — shared styles
   Theme tokens. The no-flash script in each page's <head> resolves
   the system preference into an explicit data-theme attribute, so
   only these two states ever apply.
   --------------------------------------------------------------- */

:root {
  --paper:   #F8FAFC;
  --surface: #EDF3FC;
  --ink:     #18212B;
  --body:    #3B4854;
  --graphite:#5B6875;
  --rule:    #BFCBDA;
  --accent:  #1F5AC4;
  --shadow:  rgba(24, 33, 43, .10);

  --serif: "EB Garamond", Garamond, "Times New Roman", serif;
  --shell: 54rem;
  --radius: 10px;
}

:root[data-theme="dark"] {
  --paper:   #101822;
  --surface: #18212C;
  --ink:     #E9EFF6;
  --body:    #BCC8D5;
  --graphite:#8C99A7;
  --rule:    #2B3744;
  --accent:  #8FB6F5;
  --shadow:  rgba(0, 0, 0, .45);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;          /* Garamond runs small; this reads like 16-17px sans */
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------------- shared small-caps label ---------------- */

.label {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--graphite);
  margin: 0;
}

/* ---------------- top navigation bar ---------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.nav-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: .85rem clamp(1.1rem, 5vw, 2rem);
  display: flex;
  align-items: center;
  gap: 1rem 1.5rem;
  flex-wrap: wrap;
}

/* Brand left, links and toggle pushed right. */
.brand { margin-right: auto; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -.005em;
  white-space: nowrap;
}
.brand:hover { color: var(--accent); }

.brand svg { width: 1.45em; height: 1.45em; display: block; flex: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: .4rem 1.45rem;
  flex-wrap: wrap;
}

.nav-links a {
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--graphite);
  padding-bottom: .18rem;
  border-bottom: 1.5px solid transparent;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* theme toggle */
.toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: transparent;
  color: var(--graphite);
  cursor: pointer;
}
.toggle:hover { color: var(--ink); border-color: var(--graphite); }
.toggle svg { width: 1.05rem; height: 1.05rem; display: block; }
.toggle .moon { display: none; }
:root[data-theme="dark"] .toggle .sun  { display: none; }
:root[data-theme="dark"] .toggle .moon { display: block; }

/* ---------------- page shell ---------------- */

.shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3.2rem) clamp(1.1rem, 5vw, 2rem) clamp(3rem, 6vw, 4.5rem);
}

h1 {
  font-size: clamp(2.3rem, 6.5vw, 3.6rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: .5rem 0 0;
}

hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 1.6rem 0;
}

/* ---------------- home ---------------- */

/* The home page is short, so centre it in the viewport instead of
   leaving a tall empty strip under it. */
body.home { min-height: 100vh; display: flex; flex-direction: column; }
body.home .nav { flex: none; }
body.home .shell { flex: 1 1 auto; display: flex; align-items: center; width: 100%; }
body.home .home-grid { width: 100%; }

.home-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: clamp(1.8rem, 5vw, 3.4rem);
  align-items: start;
}

.bio {
  font-size: 1.07rem;
  color: var(--body);
  max-width: 34em;
  margin: 0 0 1rem;
}
.bio:last-of-type { margin-bottom: 0; }

.tagline {
  font-size: 1.22rem;
  font-style: italic;
  color: var(--ink);
  margin: 2.6rem 0 0;
}

/* Quotes: no markers and no left rule, so they read as separate lines
   rather than a list. Space between them does the separating. */
.quotes {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  max-width: 34em;
}
.quotes li {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--body);
  margin-bottom: 1.15rem;
}
.quotes li:last-child { margin-bottom: 0; }

.portrait {
  width: 100%;
  display: block;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
}

.home-foot {
  margin-top: 2.4rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--graphite);
}

/* Email sitting directly under the name. */
.home-email {
  margin: .55rem 0 0;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.home-email a {
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: .16rem;
}
.home-email a:hover { color: var(--ink); }

/* ---------------- contact footer (every page) ---------------- */

.contact {
  /* width:100% matters on the home page: auto side margins on a column
     flex child cancel stretch, so without it the bar shrinks to its text. */
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 1.3rem clamp(1.1rem, 5vw, 2rem) 2.2rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 2.2rem;
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.contact a { color: var(--graphite); text-decoration: none; }
.contact a:hover { color: var(--ink); }

/* ---------------- section headings ---------------- */

h2.sec {
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--graphite);
  border-bottom: 1px solid var(--ink);
  padding-bottom: .55rem;
  margin: 3rem 0 0;
}

/* ---------------- project entries ---------------- */

.entry {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(1.3rem, 3.5vw, 2.4rem);
  align-items: start;
  border-top: 1px solid var(--rule);
  padding: 2.1rem 0;
}
.entry:first-of-type { border-top: none; }

.entry img {
  width: 100%;
  display: block;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
}

.entry h3 {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -.015em;
  line-height: 1.12;
  margin: .4rem 0 .75rem;
}

.entry ul { margin: 0; padding-left: 1.1rem; }
.entry li { margin-bottom: .4rem; color: var(--body); }
.entry li::marker { color: var(--accent); }

.specs {
  margin-top: 1.1rem;
  padding-top: .8rem;
  border-top: 1px dashed var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: .3rem 2rem;
}
.specs span {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--graphite);
}
.specs b {
  color: var(--ink);
  font-weight: 400;
  letter-spacing: .03em;
  text-transform: none;
}

.links { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.links a {
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: .16rem;
}
.links a:hover { color: var(--accent); }

.close {
  border-top: 1px solid var(--ink);
  padding-top: 1.6rem;
  margin-top: 2.6rem;
  color: var(--body);
}

/* ---------------- resume viewer ---------------- */

.bar {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.6rem;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.3rem;
}
.bar a {
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: .16rem;
}
.bar a:hover { color: var(--accent); }

#pages canvas {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 2px 14px var(--shadow);
}
#pages canvas:last-child { margin-bottom: 0; }

.note {
  font-size: .95rem;
  color: var(--graphite);
  text-align: center;
  padding: 3rem 1rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
}

/* ---------------- playlist ---------------- */

.embed {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 14px var(--shadow);
  background: var(--surface);
  min-height: 420px;
}
.embed iframe { display: block; width: 100%; border: none; }

/* ---------------- responsive ---------------- */

@media (max-width: 760px) {
  body { font-size: 18px; }
  .home-grid { grid-template-columns: 1fr; }
  .home-photo { order: -1; }
  .portrait { aspect-ratio: 3 / 2; }
  .entry { grid-template-columns: 1fr; gap: 1.3rem; }
  .entry img { aspect-ratio: 3 / 2; }
  /* Let the bar scroll away on phones instead of holding two rows
     of links against the top of a short screen. */
  .nav { position: static; }
  .nav-inner { padding-top: .6rem; padding-bottom: .6rem; gap: .5rem 1rem; }
  /* Row 1: brand and toggle. Row 2: the links, full width. */
  .brand  { order: 1; }
  .toggle { order: 2; }
  .nav-links { order: 3; flex-basis: 100%; }
  .nav-links { gap: .3rem 1rem; }
  .nav-links a { font-size: .74rem; letter-spacing: .09em; }
  .brand { font-size: 1.02rem; }
  .toggle { width: 1.85rem; height: 1.85rem; }
  .toggle svg { width: .95rem; height: .95rem; }
}

@media (max-width: 440px) {
  /* Below this the wordmark is what pushes the links onto a third row. */
  .brand span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .brand svg { width: 1.7em; height: 1.7em; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}