/* ============================================================
   Lucy Tam - portfolio website
   Layout language inspired by githubuniverse.com: sticky nav that
   collapses to a hamburger on mobile, bold oversized headlines,
   alternating colour-blocked sections, strong-bordered cards,
   asterisk dividers, high-contrast CTA buttons.
   ============================================================ */

:root {
  /* ---- palette (edit these to re-theme the whole site) ---- */
  --teal:        #296B72;   /* deep teal - links, accents, dark section bg */
  --green:       #5D9372;   /* muted green - secondary accent, mono labels */
  --lime:        #C8DC5A;   /* lime - highlight marker, hover accents */
  --paper:       #DBDFC3;   /* pale khaki - default page/section bg */
  --cream:       #FDE7C2;   /* pale peach - alternate section bg */
  --orange:      #F09452;   /* orange - primary CTA buttons */
  --ink:         #344C4C;   /* dark teal/charcoal - body text, dark bg, borders */
  --coral:       #E56363;   /* coral/red - alerts, hover-state accent */

  /* ---- semantic aliases (change the mapping, not every rule) ---- */
  --bg:          var(--paper);
  --bg-alt:      var(--cream);
  --bg-dark:     var(--ink);
  --text:        var(--ink);
  --text-on-dark:var(--paper);
  --text-soft:   var(--teal);
  --accent:      var(--orange);
  --accent-2:    var(--coral);
  --line:        2px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Mono", monospace;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  background-image: radial-gradient(rgba(52, 76, 76, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

::selection { background: var(--lime); color: var(--ink); }

/* ---------- clean borders ---------- */
.sketch {
  border: var(--line) solid var(--ink);
  border-radius: 0;
}

/* underlined links */
a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--green);
  text-decoration-thickness: 1.6px;
  text-underline-offset: 4px;
  transition: color .15s;
}
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ---------- typography ---------- */
h1, h2, h3 { font-weight: 400; line-height: 1.05; }

.mono {
  font-family: "IBM Plex Mono", monospace;
  font-size: .82rem;
  letter-spacing: .02em;
  color: var(--text-soft);
}

/* marker-highlight behind words */
.hl {
  background: linear-gradient(104deg,
    transparent .6%,
    var(--lime) 2.4%,
    var(--lime) 97.8%,
    transparent 98%);
  padding: 0 .25em;
  border-radius: 0;
}

/* ============================================================
   NAV - sticky, collapses to a hamburger icon (top right) on mobile
   ============================================================ */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem clamp(1rem, 4vw, 3rem);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(4px);
  border-bottom: var(--line) solid var(--ink);
}
nav .logo {
  font-family: "Micro 5", monospace;
  font-size: 2.4rem;
  text-decoration: none;
}
nav ul {
  display: flex;
  gap: clamp(.9rem, 3vw, 2rem);
  list-style: none;
}
nav ul a {
  font-family: "IBM Plex Mono", monospace;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  text-decoration: none;
}
nav ul a:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
}

/* hamburger button - hidden on desktop, shown under the mobile breakpoint */
.nav-toggle {
  display: none;
  position: relative;
  width: 38px;
  height: 38px;
  border: var(--line) solid var(--ink);
  border-radius: 0;
  background: var(--bg);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle span {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--ink);
  transition: transform .2s ease, opacity .2s ease, top .2s ease;
}
.nav-toggle span:nth-child(1) { top: 12px; }
.nav-toggle span:nth-child(2) { top: 18px; }
.nav-toggle span:nth-child(3) { top: 24px; }
nav.nav-open .nav-toggle span:nth-child(1) { top: 18px; transform: rotate(45deg); }
nav.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
nav.nav-open .nav-toggle span:nth-child(3) { top: 18px; transform: rotate(-45deg); }

@media (max-width: 700px) {
  .nav-toggle { display: block; }

  nav ul {
    position: fixed;
    inset: 0;
    z-index: 49;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: var(--bg-dark);
    /* collapsed by default */
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity .2s ease, transform .2s ease;
  }
  nav.nav-open ul {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  nav ul a {
    color: var(--text-on-dark);
    font-size: 1.3rem;
  }
  nav ul a:hover { color: var(--lime); text-decoration-color: var(--lime); }
}

/* ============================================================
   HERO - dark colour-blocked panel, oversized display type
   ============================================================ */
.hero {
  min-height: calc(100svh - 62px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1rem 4rem;
  position: relative;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  overflow: hidden;
}

/* large landing image behind the profile picture, filling the hero */
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}
/* dark tint over the photo so the headline/tagline stay legible on top of it */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: color-mix(in srgb, var(--bg-dark) 72%, transparent);
}
.hero > *:not(.hero-bg) {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-family: "Micro 5", monospace;
  font-size: clamp(4.5rem, 16vw, 11rem);
  letter-spacing: .01em;
  color: var(--paper);
}

.hero .tagline {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(.85rem, 2.4vw, 1.05rem);
  color: var(--lime);
  max-width: 34ch;
  margin-top: .6rem;
}

/* penguin mascot */
.penguin-wrap {
  margin-bottom: .5rem;
  cursor: pointer;
  position: relative;
  border: none;
  background: none;
}
.penguin-wrap img {
  display: block;
  width: 132px;
  height: 132px;
  object-fit: cover;
  border: var(--line) solid var(--paper);
  border-radius: 0;
}
.penguin-wrap:hover img { animation: waddle .8s ease-in-out infinite; }
@keyframes waddle {
  0%, 100% { transform: rotate(-4deg); }
  50%      { transform: rotate(4deg); }
}

/* "currently working on" tile - same visual language as the project
   cards further down the page (border, padding, placeholder image slot)
   but static, since it isn't a clickable card. */
.now-card {
  position: relative;
  z-index: 2;
  width: min(360px, 88vw);
  margin-top: 2rem;
  background: var(--bg);
  border: var(--line) solid var(--ink);
  border-radius: 0;
  padding: 1.1rem 1.1rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  text-align: left;
  box-shadow: 5px 6px 0 var(--ink);
}
.now-card h3 {
  font-family: "Jersey 10", monospace;
  font-size: 1.4rem;
  color: var(--ink);
}
.now-card p { font-size: .93rem; color: var(--text-soft); }

/* scroll hint arrow */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bob 2s ease-in-out infinite;
}
.scroll-hint svg { stroke: var(--paper); }
@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   SECTIONS
   ============================================================ */
section { padding: 4.5rem clamp(1rem, 5vw, 4rem); max-width: 1100px; margin: 0 auto; }

/* alternating colour-blocked backgrounds, full-bleed behind each section */
#bio, #press { background: var(--bg-alt); }
#bio, #press { box-shadow: 0 0 0 100vmax var(--bg-alt); clip-path: inset(0 -100vmax); }
#projects { background: var(--bg); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.2rem;
  flex-wrap: wrap;
}
.section-head h2 {
  font-family: "Jersey 10", monospace;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  text-transform: uppercase;
}
.section-head .count {
  font-family: "IBM Plex Mono", monospace;
  font-size: .85rem;
  color: var(--green);
}

/* asterisk divider between sections, GitHub-Universe style */
.divider {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 5vw, 4rem);
}
.divider svg { display: none; }
.divider::after {
  content: "* * *";
  display: block;
  text-align: center;
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: .6em;
  color: var(--green);
  padding: .4rem 0 .1rem;
}

/* ============================================================
   PROJECT CARDS
   ============================================================ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.6rem;
}

.card {
  background: var(--bg);
  border: var(--line) solid var(--ink);
  border-radius: 0;
  padding: 1.1rem 1.1rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 5px 6px 0 var(--ink);
  border-color: var(--accent);
}

.card h3 {
  font-family: "Jersey 10", monospace;
  font-size: 1.75rem;
}
.card p { font-size: .93rem; color: var(--text-soft); }

/* placeholder image frames - replace the .ph div with an <img> */
.ph {
  aspect-ratio: 4 / 3;
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(to top right,    transparent calc(50% - 1px), rgba(52,76,76,.35) 50%, transparent calc(50% + 1px)),
    linear-gradient(to bottom right, transparent calc(50% - 1px), rgba(52,76,76,.35) 50%, transparent calc(50% + 1px));
}
.ph span {
  font-family: "IBM Plex Mono", monospace;
  font-size: .7rem;
  color: var(--text-soft);
  background: var(--bg);
  padding: .2rem .6rem;
  border: 1.5px dashed var(--text-soft);
  border-radius: 0;
}
.card img.ph-img, .now-card img.ph-img {  /* use this class when swapping in real images */
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: var(--line) solid var(--ink);
  border-radius: 0;
}
.card[data-project] { cursor: pointer; }

/* ============================================================
   PROJECT DETAIL MODAL (click a card to expand)
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(52, 76, 76, .7);
  padding: clamp(1rem, 4vw, 3rem);
  overflow-y: auto;
}
.modal-overlay.open { display: flex; align-items: flex-start; justify-content: center; }

.modal {
  position: relative;
  background: var(--bg);
  border: var(--line) solid var(--ink);
  border-radius: 0;
  max-width: 720px;
  width: 100%;
  margin: auto 0;
  padding: 1.6rem 1.6rem 2rem;
  box-shadow: 6px 7px 0 var(--ink);
}
.modal-close {
  position: absolute;
  top: .7rem;
  right: .8rem;
  width: 34px;
  height: 34px;
  border: var(--line) solid var(--ink);
  border-radius: 0;
  background: var(--bg);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ink);
}
.modal-close:hover { color: var(--accent-2); border-color: var(--accent-2); }

.modal-gallery { position: relative; margin-bottom: 1rem; }
.modal-photo-wrap { position: relative; cursor: pointer; }
.modal-photo {
  display: block;
  margin: 0 auto;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 70vh;
  border: var(--line) solid var(--ink);
  border-radius: 0;
}
.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: var(--line) solid var(--ink);
  border-radius: 0;
  background: var(--bg);
  cursor: pointer;
  font-size: 1rem;
  color: var(--ink);
}
.gallery-nav:hover { color: var(--accent); border-color: var(--accent); }
.gallery-nav.prev { left: -14px; }
.gallery-nav.next { right: -14px; }
@media (max-width: 560px) {
  .gallery-nav.prev { left: 4px; }
  .gallery-nav.next { right: 4px; }
}

/* photo caption bubble - click a photo to toggle, same idea as the 1851 logo bubble */
.photo-caption {
  display: none;
  position: absolute;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  max-width: 88%;
  background: var(--bg);
  border: var(--line) solid var(--ink);
  border-radius: 0;
  padding: .6rem .8rem;
  font-size: .82rem;
  line-height: 1.4;
  box-shadow: 3px 4px 0 var(--ink);
}
.photo-caption.show { display: block; }

.modal-dots { display: flex; justify-content: center; gap: .4rem; margin-bottom: 1.2rem; }
.modal-dots button {
  width: 9px;
  height: 9px;
  border-radius: 0;
  border: 1.5px solid var(--ink);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.modal-dots button.active { background: var(--accent); border-color: var(--accent); }

.modal h3 { font-family: "Jersey 10", monospace; font-size: 1.9rem; }
.modal-meta { margin-bottom: .8rem; }
.modal-description p + p { margin-top: .8rem; }
.modal-links { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.1rem; }
.modal-links a {
  font-family: "IBM Plex Mono", monospace;
  font-size: .85rem;
  padding: .4rem 1rem;
  text-decoration: none;
  border: var(--line) solid var(--ink);
  border-radius: 0;
}
.modal-links a:hover { color: var(--ink); background: var(--accent); border-color: var(--accent); }
.modal-next {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 1.5px dashed var(--green);
}
.modal-next h4 {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--green);
  margin-bottom: .4rem;
}

/* ============================================================
   PRESS / MEDIA
   ============================================================ */
.media-embed {
  position: relative;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16 / 9;
  margin: 0 auto;
  border: var(--line) solid var(--ink);
  border-radius: 0;
  overflow: hidden;
  box-shadow: 5px 6px 0 var(--ink);
}
.media-embed iframe { width: 100%; height: 100%; border: 0; display: block; }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 780px) { .about-grid { grid-template-columns: 1fr; } }

.about-grid .bio p + p { margin-top: 1rem; }

/* logo row (Imperial / RCA / 1851) */
.bio-logos {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  margin: 1rem 0;
}
.bio-logo {
  width: clamp(50px, 11vw, 90px);
  height: clamp(50px, 11vw, 90px);
  object-fit: contain;
}
.bio-logos a { display: inline-flex; }
.logo-imperial { filter: saturate(0%); }
.logo-1851-wrap { position: relative; display: inline-flex; }
.logo-1851 { cursor: pointer; }

/* speech bubble for the 1851 logo, shown on hover or click */
.speech-bubble {
  display: none;
  position: absolute;
  left: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%);
  width: 230px;
  background: var(--bg);
  border: var(--line) solid var(--ink);
  border-radius: 0;
  padding: .75rem .9rem;
  font-size: .82rem;
  line-height: 1.45;
  color: var(--ink);
  box-shadow: 3px 4px 0 var(--ink);
  z-index: 10;
}
.speech-bubble::before {
  content: "";
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 8px solid transparent;
  border-right-color: var(--ink);
}
.logo-1851-wrap:hover .speech-bubble,
.logo-1851-wrap.active .speech-bubble {
  display: block;
}
@media (max-width: 780px) {
  .speech-bubble { left: 0; top: calc(100% + 10px); transform: none; }
  .speech-bubble::before { display: none; }
}

.fact-box {
  padding: 1.3rem 1.4rem;
  margin-bottom: 1.4rem;
}
.fact-box h3 {
  font-family: "Jersey 10", monospace;
  font-size: 1.5rem;
  margin-bottom: .6rem;
  color: var(--green);
}
.fact-box ul { list-style: none; }
.fact-box li {
  font-size: .9rem;
  padding-left: 1.3rem;
  position: relative;
  margin-bottom: .45rem;
}
/* arrow bullet */
.fact-box li::before {
  content: "\2192";
  position: absolute;
  left: 0;
}
.fact-box li em { font-style: normal; color: var(--text-soft); font-size: .82rem; }

/* ============================================================
   CONTACT / FOOTER - dark colour-blocked panel with high-contrast CTAs
   ============================================================ */
.contact {
  text-align: center;
  padding-bottom: 3rem;
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.contact { box-shadow: 0 0 0 100vmax var(--bg-dark); clip-path: inset(0 -100vmax); }
.contact h2 {
  font-family: "Micro 5", monospace;
  font-size: clamp(3rem, 9vw, 5.5rem);
  margin-bottom: 1rem;
  color: var(--paper);
}
.contact p { color: var(--lime); max-width: 42ch; margin: 0 auto 2rem; }
.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.2rem;
}
.contact-links a {
  font-family: "IBM Plex Mono", monospace;
  font-size: .95rem;
  padding: .55rem 1.3rem;
  text-decoration: none;
  color: var(--ink);
  background: var(--accent);
  border: var(--line) solid var(--ink);
  border-radius: 0;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.contact-links a:hover {
  background: var(--lime);
  transform: translateY(-3px);
  box-shadow: 3px 4px 0 var(--paper);
}

footer {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  border-top: var(--line) solid var(--paper);
  padding: 1.2rem clamp(1rem, 4vw, 3rem);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
}
footer span { font-family: "IBM Plex Mono", monospace; }

/* fade-in on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   SEA CRITTERS - roam the whole page
   All sprite artwork + movement is generated in the <script> at the
   bottom of the page (search "SEA CRITTERS" there). This CSS only
   controls each critter's SIZE, its fixed on-screen anchor, and
   stacking order - actual position each frame is set via JS
   (element.style.transform), so moving these els with CSS alone
   won't do much beyond resizing them.
   ============================================================ */

/* crab: pinned to the left edge, JS animates it up/down (see
   crabPatrolY in the script). To move it to the right edge instead,
   change `left: 6px` to `right: 6px` here AND update CRAB_X in the
   script to match (it's used for the cursor-proximity math). */
.crab-side {
  position: fixed;
  left: 6px;              /* distance from the left edge of the viewport */
  top: 0;                 /* JS overrides vertical position every frame */
  width: 50px;             /* sprite display size - bump up for a bigger crab */
  height: 50px;
  z-index: 30;             /* below nav (z-index 50) */
  pointer-events: auto;    /* keeps it clickable/tappable for the startle reaction */
  cursor: pointer;
  -webkit-user-drag: none;
  user-select: none;
  will-change: transform;
}
.crab-side img { display: block; width: 100%; height: 100%; image-rendering: pixelated; pointer-events: none; }
/* smaller crab + tighter edge margin on phones */
@media (max-width: 640px) { .crab-side { width: 38px; height: 38px; left: 3px; } }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}