/* =========================================================
   Kaitlyn Duvalois — Portfolio
   Design system: editorial / premium-consulting
   Palette derived from the existing portfolio (dusty blue + coral)
   ========================================================= */

:root {
  /* Color */
  --bg:        #fbf9f5;   /* warm cream */
  --bg-soft:   #f3eee6;   /* sand */
  --surface:   #ffffff;
  --ink:       #1c2b38;   /* deep navy ink */
  --ink-soft:  #41525f;
  --muted:     #6b7884;
  --line:      #e6ded2;
  --blue:      #4f86ad;   /* primary dusty blue */
  --blue-deep: #2f5d7c;
  --blue-tint: #e7eef4;
  --coral:     #e0825f;   /* accent */
  --coral-soft:#f6e2d8;

  /* Type */
  /* Single primary typeface across the site: Kulim Park.
     --serif/--sans are retained as aliases so all existing rules keep working;
     both now resolve to the one primary family. */
  --font:  "Kulim Park", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: var(--font);
  --sans:  var(--font);

  /* Layout */
  --container: 1120px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px -12px rgba(28, 43, 56, 0.22);
  --shadow-lg: 0 24px 60px -20px rgba(28, 43, 56, 0.35);
  --ease: cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-deep); text-underline-offset: 3px; }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.12; color: var(--ink); font-weight: 600; margin: 0 0 .4em; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.75rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1rem; }

.container { width: min(var(--container), 92vw); margin-inline: auto; }
.section { padding: clamp(3.5rem, 8vw, 7rem) 0; }
.eyebrow {
  font-family: var(--sans); font-weight: 600; font-size: .78rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--coral); margin: 0 0 .75rem;
}
.eyebrow.center, .center { text-align: center; }
.section-lede { color: var(--ink-soft); max-width: 56ch; font-size: 1.05rem; margin-bottom: 2.5rem; }
.section.impact .section-lede, h2.center + .impact-grid { margin-inline: auto; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--ink); color: #fff; padding: .6rem 1rem; border-radius: 8px;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-family: var(--sans); font-weight: 600; font-size: .98rem; line-height: 1;
  padding: .85rem 1.5rem; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; text-decoration: none; transition: transform .18s var(--ease), background .2s, box-shadow .2s, color .2s, border-color .2s;
}
.btn:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.btn-sm { padding: .58rem 1.05rem; font-size: .9rem; }
.btn-primary { background: var(--blue-deep); color: #fff; }
.btn-primary:hover { background: var(--ink); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue-deep); color: var(--blue-deep); transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px -18px rgba(28,43,56,.5); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; text-decoration: none; color: var(--ink); }
.brand-name { font-family: var(--serif); font-size: 1.1rem; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--blue-deep); color: var(--bg); font-family: var(--serif); font-weight: 700; font-size: 1rem;
}
.nav-menu { list-style: none; display: flex; align-items: center; gap: 1.6rem; margin: 0; padding: 0; }
.nav-menu a:not(.btn) { color: var(--ink-soft); text-decoration: none; font-weight: 600; font-size: .98rem; position: relative; }
.nav-menu a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0; background: var(--coral); transition: width .25s var(--ease);
}
.nav-menu a:not(.btn):hover::after, .nav-menu a.active::after { width: 100%; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(3rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(40rem 30rem at 85% -10%, var(--blue-tint), transparent 60%),
    radial-gradient(34rem 26rem at -10% 110%, var(--coral-soft), transparent 60%);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero-title { font-size: clamp(2.3rem, 5.4vw, 4rem); font-weight: 700; margin-bottom: 1rem; }
.hero-title .accent { color: var(--blue-deep); font-style: italic; }
.hero-lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 50ch; margin-bottom: 1.8rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 2.5rem; }
.hero-stats { list-style: none; display: flex; flex-wrap: wrap; gap: 2rem; margin: 0; padding: 0; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--serif); font-size: 1.9rem; color: var(--ink); line-height: 1; }
.hero-stats span { font-size: .85rem; color: var(--muted); margin-top: .35rem; max-width: 16ch; }

.hero-visual { position: relative; display: grid; place-items: center; }
.portrait-frame {
  position: relative; width: min(360px, 80%); aspect-ratio: 4/5; border-radius: 220px 220px 24px 24px;
  background: linear-gradient(160deg, var(--blue) 0%, var(--blue-deep) 100%);
  box-shadow: var(--shadow-lg); overflow: hidden; isolation: isolate;
}
.portrait-frame::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; border: 1px solid rgba(255,255,255,.25);
}
.portrait { width: 100%; height: 100%; object-fit: cover; }
.portrait-fallback { display: none; position: absolute; inset: 0; place-items: center; color: rgba(255,255,255,.92); flex-direction: column; }
.portrait-frame.no-photo .portrait-fallback { display: grid; }
.bloom { width: 58%; opacity: .35; }
.monogram { position: absolute; font-family: var(--serif); font-weight: 700; font-size: 4.5rem; letter-spacing: .04em; }
.hero-badge {
  position: absolute; bottom: 6%; left: -4%; background: var(--surface); color: var(--ink);
  border-radius: 14px; padding: .7rem 1rem; box-shadow: var(--shadow); font-size: .85rem; font-weight: 600;
  border: 1px solid var(--line);
}
.hero-badge span { color: var(--coral); font-family: var(--serif); }
.scroll-hint {
  position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%); font-size: .7rem; letter-spacing: .25em;
  text-transform: uppercase; color: var(--muted);
}
.scroll-hint::after { content: ""; display: block; width: 1px; height: 26px; background: var(--muted); margin: 8px auto 0; animation: dropline 1.8s var(--ease) infinite; }
@keyframes dropline { 0%{transform: scaleY(0); transform-origin: top;} 50%{transform: scaleY(1); transform-origin: top;} 51%{transform-origin: bottom;} 100%{transform: scaleY(0); transform-origin: bottom;} }

/* ---------- Logos / context bar ---------- */
.logos { background: var(--ink); color: var(--bg); padding: 1.6rem 0; }
.logos .container { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2rem; justify-content: center; }
.logos-label { margin: 0; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(251,249,245,.6); }
.logos-list { list-style: none; display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; margin: 0; padding: 0; }
.logos-list li { font-family: var(--serif); font-size: 1.05rem; color: rgba(251,249,245,.92); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.about-photo {
  position: relative; aspect-ratio: 4/5; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(160deg, var(--coral) 0%, var(--blue-deep) 130%); box-shadow: var(--shadow);
}
.about-img { width: 100%; height: 100%; object-fit: cover; }
.about-photo-fallback { display: none; position: absolute; inset: 0; place-items: center; font-family: var(--serif); font-size: 5rem; color: rgba(255,255,255,.9); }
.about-photo.no-photo .about-photo-fallback { display: grid; }
.about-facts { list-style: none; margin: 1.5rem 0 1.8rem; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: .9rem 1.5rem; }
.about-facts li { font-size: .98rem; border-left: 2px solid var(--coral); padding-left: .85rem; }
.about-facts span { display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: .15rem; }

/* ---------- Impact ---------- */
.impact { background: var(--bg-soft); }
.impact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; margin-top: 2.5rem; }
.impact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.75rem 1.4rem; text-align: center; box-shadow: var(--shadow); }
.impact-card strong { display: block; font-family: var(--serif); font-size: clamp(2rem, 4vw, 2.7rem); color: var(--blue-deep); line-height: 1; margin-bottom: .6rem; }
.impact-card p { margin: 0; font-size: .92rem; color: var(--ink-soft); }

/* ---------- Case studies ---------- */
.case {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.5rem); margin-bottom: 1.5rem; box-shadow: var(--shadow);
}
.case-head { border-bottom: 1px solid var(--line); padding-bottom: 1.1rem; margin-bottom: 1.4rem; }
.case-head h3 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); margin-bottom: .35rem; }
.case-meta { color: var(--muted); font-size: .92rem; margin: 0; }
.case-body { display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 1.75rem; }
.case-block h4 { font-family: var(--sans); font-size: .76rem; text-transform: uppercase; letter-spacing: .14em; color: var(--coral); margin: 0 0 .5rem; }
.case-block p { font-size: .96rem; color: var(--ink-soft); margin: 0; }
.case-results { margin: 0; padding-left: 1.1rem; font-size: .95rem; color: var(--ink-soft); }
.case-results li { margin-bottom: .45rem; }
.case-results strong { color: var(--ink); }

/* ---------- Work gallery ---------- */
.filters { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2rem; }
.filter {
  font-family: var(--sans); font-weight: 600; font-size: .9rem; padding: .5rem 1.1rem; border-radius: 999px;
  border: 1.5px solid var(--line); background: transparent; color: var(--ink-soft); cursor: pointer; transition: all .2s var(--ease);
}
.filter:hover { border-color: var(--blue-deep); color: var(--blue-deep); }
.filter.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }
.filter:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
.gallery { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.card { border-radius: var(--radius); overflow: hidden; }
.card.is-hidden { display: none; }
.card-btn {
  display: block; width: 100%; padding: 0; border: 1px solid var(--line); background: var(--surface); cursor: pointer;
  border-radius: var(--radius); overflow: hidden; position: relative; text-align: left; transition: transform .25s var(--ease), box-shadow .25s;
}
.card-btn:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-btn:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.card-btn img { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: var(--bg-soft); }
.card-tag {
  position: absolute; top: .8rem; left: .8rem; background: rgba(28,43,56,.85); color: #fff; font-size: .7rem;
  font-weight: 600; letter-spacing: .06em; text-transform: uppercase; padding: .3rem .65rem; border-radius: 999px;
}
.card-cap { display: block; padding: .85rem 1rem 1rem; font-weight: 600; font-size: .95rem; color: var(--ink); }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin: 2.5rem 0 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-left: 2.5rem; margin-bottom: 1.5rem; }
.tl-dot { position: absolute; left: 0; top: 6px; width: 20px; height: 20px; border-radius: 50%; background: var(--surface); border: 3px solid var(--blue-deep); }
.tl-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.6rem; box-shadow: var(--shadow); }
.tl-date { font-size: .8rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--coral); margin: 0 0 .3rem; }
.tl-card h3 { margin: 0 0 .15rem; font-size: 1.2rem; }
.tl-org { color: var(--blue-deep); font-weight: 600; margin: 0 0 .8rem; font-size: .98rem; }
.tl-card ul { margin: 0; padding-left: 1.1rem; color: var(--ink-soft); font-size: .96rem; }
.tl-card li { margin-bottom: .35rem; }

/* ---------- Skills + Education ---------- */
.skills { background: var(--bg-soft); }
.skills-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.skill-groups { display: grid; gap: 1.5rem; margin-top: 1.5rem; }
.skill-group h3 { font-size: 1.05rem; margin-bottom: .7rem; color: var(--blue-deep); }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: .55rem; margin: 0; padding: 0; }
.chips li { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: .45rem .95rem; font-size: .88rem; font-weight: 600; color: var(--ink-soft); }
.education-col { background: var(--ink); color: var(--bg); border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow); position: sticky; top: 90px; }
.edu-title { color: #fff; margin-bottom: 1.2rem; }
.edu-item { padding: 1rem 0; border-top: 1px solid rgba(255,255,255,.14); }
.edu-degree { font-weight: 600; margin: 0 0 .2rem; }
.edu-school { margin: 0; color: rgba(251,249,245,.7); font-size: .92rem; }
.edu-cta { margin-top: 1.4rem; padding-top: 1.2rem; border-top: 1px solid rgba(255,255,255,.14); }
.edu-cta p { color: rgba(251,249,245,.8); font-size: .92rem; margin-bottom: .8rem; }
.education-col .btn-ghost { color: #fff; border-color: rgba(255,255,255,.4); }
.education-col .btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.contact-links { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.contact-links li { padding: .6rem 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
.contact-links a { font-weight: 600; }
.contact-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.25rem); box-shadow: var(--shadow); }
.field { margin-bottom: 1.2rem; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .4rem; }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: .98rem; padding: .8rem .9rem; border: 1.5px solid var(--line);
  border-radius: var(--radius-sm); background: var(--bg); color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue-deep); box-shadow: 0 0 0 3px var(--blue-tint); }
.field textarea { resize: vertical; }
.field.invalid input, .field.invalid textarea { border-color: #c0492f; }
.error { display: block; color: #c0492f; font-size: .82rem; margin-top: .35rem; min-height: 1em; }
.form-status { margin: 1rem 0 0; font-weight: 600; font-size: .95rem; min-height: 1.2em; }
.form-status.ok { color: var(--blue-deep); }
.form-status.err { color: #c0492f; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--bg); padding: 2.5rem 0; position: relative; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-brand { display: flex; align-items: center; gap: .6rem; font-family: var(--serif); font-size: 1.1rem; margin: 0; }
.site-footer nav { display: flex; gap: 1.4rem; }
.site-footer nav a { color: rgba(251,249,245,.78); text-decoration: none; font-size: .95rem; }
.site-footer nav a:hover { color: #fff; }
.footer-copy { width: 100%; margin: 1rem 0 0; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.12); color: rgba(251,249,245,.55); font-size: .85rem; }
.to-top {
  position: absolute; right: 4vw; top: -22px; width: 44px; height: 44px; border-radius: 50%; background: var(--coral);
  color: #fff; display: grid; place-items: center; text-decoration: none; font-size: 1.2rem; box-shadow: var(--shadow); transition: transform .2s var(--ease);
}
.to-top:hover { transform: translateY(-3px); }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(20,28,36,.92); display: grid; place-items: center; padding: 4vw; }
.lightbox[hidden] { display: none; }
.lb-figure { margin: 0; max-width: 92vw; max-height: 90vh; display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.lb-figure img { max-width: 100%; max-height: 80vh; border-radius: 10px; box-shadow: var(--shadow-lg); background: #fff; }
.lb-figure figcaption { color: #fff; font-size: .95rem; }
.lb-close {
  position: absolute; top: 18px; right: 22px; width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: rgba(255,255,255,.14); color: #fff; font-size: 1.8rem; line-height: 1; transition: background .2s;
}
.lb-close:hover { background: rgba(255,255,255,.3); }
.lb-close:focus-visible { outline: 3px solid var(--coral); outline-offset: 2px; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; margin-bottom: 1rem; }
  .portrait-frame { width: min(280px, 70%); }
  .about-grid { grid-template-columns: 1fr; }
  .about-media { max-width: 340px; }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
  .case-body { grid-template-columns: 1fr; gap: 1.2rem; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: 1fr; }
  .education-col { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: .5rem 6vw 1.5rem;
    transform: translateY(-120%); transition: transform .3s var(--ease); box-shadow: var(--shadow);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu li { padding: .25rem 0; }
  .nav-menu a:not(.btn) { display: block; padding: .7rem 0; font-size: 1.05rem; }
  .nav-menu .btn { margin-top: .6rem; }
  .hero-stats { gap: 1.25rem; }
  .hero-stats strong { font-size: 1.5rem; }
  .impact-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .about-facts { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}