/* ============================================================
   Portfolio design system
   Fonts: Big Shoulders (display/technical), IBM Plex Sans (body),
          IBM Plex Mono (labels, data, code)
   ============================================================ */

:root {
  --bg: #0a0d12;
  --bg-raised: #10141b;
  --bg-panel: #141a23;
  --bg-panel-hover: #182029;
  --border: #232c39;
  --border-soft: #1a212b;
  --text: #e8edf4;
  --text-dim: #94a3b5;
  --text-faint: #5b6a7d;
  --accent: #6fa3d8;
  --accent-bright: #9cc4ec;
  --accent-dim: #35526e;
  --accent-wash: rgba(111, 163, 216, 0.08);
  --accent-wash-strong: rgba(111, 163, 216, 0.16);
  --sand: #d8c7a5;
  --sand-bright: #efe1c5;
  --sand-dim: #8d7b5d;
  --sand-wash: rgba(216, 199, 165, 0.1);
  --amber: #d3a86a;
  --danger: #d87f7f;

  --font-display: "Big Shoulders", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", monospace;

  --max-width: 1240px;
  --gutter: clamp(1.5rem, 5vw, 4rem);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.lightbox-open { overflow: hidden; }

/* Fixed blueprint grid + grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 40%, transparent 85%);
  opacity: 0.5;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--accent-dim); color: var(--text); }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0;
  line-height: 1.02;
}

p { margin: 0; }

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 2;
}

/* ---------- Utility ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.text-dim { color: var(--text-dim); }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  padding: 0.85rem 1.5rem;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), transform 0.2s var(--ease);
  white-space: nowrap;
}
.btn:hover { border-color: var(--accent); background: var(--accent-wash); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--sand); border-color: var(--sand); color: #11100d; font-weight: 600; }
.btn-primary:hover { background: var(--sand-bright); border-color: var(--sand-bright); }
.btn-arrow { transition: transform 0.3s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(10, 13, 18, 0.72);
  border-bottom: 1px solid var(--border-soft);
}
.nav {
  display: grid;
  grid-template-columns: minmax(190px, 0.75fr) minmax(420px, 1.35fr) minmax(220px, 0.8fr);
  grid-template-areas: "brand links contact";
  align-items: center;
  column-gap: clamp(1rem, 2.4vw, 2.2rem);
  padding-block: 1.1rem;
}
.nav-mark {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.nav-mark .dot { color: var(--accent); }
.nav-brand {
  grid-area: brand;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.nav-subtitle {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sand-dim);
}
.nav-contact {
  grid-area: contact;
  justify-self: end;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sand-bright);
  line-height: 1.25;
  text-align: right;
  padding: 0.46rem 0.75rem 0.46rem 1rem;
  border-right: 2px solid var(--sand-dim);
  background: linear-gradient(90deg, transparent, var(--sand-wash));
}
.nav-contact::before {
  content: "";
  position: absolute;
  right: -2px;
  bottom: -7px;
  border-top: 7px solid var(--sand-dim);
  border-left: 7px solid transparent;
}
.nav-contact a {
  transition: color 0.25s;
  white-space: nowrap;
}
.nav-contact a:first-child { color: var(--text-dim); }
.nav-contact a:last-child { color: var(--sand-bright); }
.nav-contact a:hover { color: var(--text); }
.nav-links {
  grid-area: links;
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 2vw, 2.1rem);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.nav-links a {
  position: relative;
  color: var(--text-dim);
  padding-bottom: 4px;
  transition: color 0.25s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  width: 40px; height: 40px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media (max-width: 860px) {
  .site-header {
    z-index: 1000;
    background: rgba(10, 13, 18, 0.94);
  }
  .nav-backdrop {
    position: fixed;
    z-index: 900;
    top: var(--nav-menu-top, 112px);
    right: 0;
    bottom: 0;
    left: 0;
    pointer-events: none;
    opacity: 0;
    background: rgba(10, 13, 18, 0.62);
    background-image:
      linear-gradient(rgba(26, 33, 43, 0.58) 1px, transparent 1px),
      linear-gradient(90deg, rgba(26, 33, 43, 0.58) 1px, transparent 1px);
    background-size: 64px 64px;
    backdrop-filter: blur(18px) saturate(120%);
    -webkit-backdrop-filter: blur(18px) saturate(120%);
    transition: opacity 0.25s var(--ease);
  }
  .nav-backdrop.open {
    pointer-events: auto;
    opacity: 1;
  }
  .nav-toggle { display: flex; }
  body.nav-open { overflow: hidden; }
  body.nav-open .site-header { background: #0a0d12; }
  .nav {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
  }
  .nav-contact {
    order: 3;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    margin: -0.4rem 0 0;
    font-size: 0.66rem;
    text-align: left;
    border-right: 0;
    border-left: 2px solid var(--sand-dim);
    padding-left: 0.75rem;
  }
  .nav-contact::before { display: none; }
  .nav-links {
    position: fixed;
    z-index: 1001;
    top: var(--nav-menu-top, 112px);
    right: 0;
    bottom: 0;
    left: 0;
    background: transparent;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 2rem var(--gutter);
    gap: 1.6rem;
    font-size: 1.1rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    border-top: 1px solid var(--border);
    box-shadow: -18px 0 60px rgba(0, 0, 0, 0.45);
  }
  .nav-links a {
    width: 100%;
    padding: 0.9rem 1rem;
    position: relative;
    z-index: 2;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: rgba(20, 26, 35, 0.88);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.32);
  }
  .nav-links.open { transform: translateX(0); }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding-block: 3rem;
  margin-top: 6rem;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-links {
  display: flex;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}
.footer-links a:hover { color: var(--accent); }
.footer-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 1.5rem;
}

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(4rem, 10vh, 7rem);
  padding-bottom: clamp(3rem, 8vh, 5rem);
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: end;
}
.hero-name {
  font-size: clamp(3.2rem, 8vw, 6.4rem);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}
.hero-role {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--accent);
  margin-top: 1.1rem;
}
.hero-desc {
  max-width: 46ch;
  color: var(--text-dim);
  margin-top: 1.4rem;
  font-size: 1.05rem;
}
.hero-interests {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.8rem;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-dim);
  background: var(--sand-wash);
  transition: border-color 0.25s, color 0.25s;
}
.chip:hover { border-color: var(--sand); color: var(--sand-bright); }
.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2.2rem;
  flex-wrap: wrap;
}
.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  border-left: 1px solid var(--border);
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.hero-meta strong { color: var(--text-dim); display: block; font-weight: 500; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-meta { border-left: none; border-top: 1px solid var(--border); padding-left: 0; padding-top: 1.2rem; flex-direction: row; flex-wrap: wrap; gap: 1.6rem; }
}

/* ---------- Section shells ---------- */
section { position: relative; z-index: 2; }
.section {
  padding-block: clamp(3.5rem, 8vh, 6rem);
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  margin-bottom: 2.6rem;
  flex-wrap: wrap;
}
.section-title {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  margin-top: 0.5rem;
}
.section-lede {
  max-width: 60ch;
  color: var(--text-dim);
}

/* ---------- Cards / grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.4rem;
}
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dim);
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.5);
}
.card-media {
  aspect-ratio: 16/10;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  position: relative;
}
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.card:hover .card-media img { transform: scale(1.05); }
.card-media-empty {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}
.card-body { padding: 1.4rem; display: flex; flex-direction: column; gap: 0.7rem; flex: 1; }
.card-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sand);
}
.card-title { font-size: 1.3rem; }
.card-text { color: var(--text-dim); font-size: 0.92rem; flex: 1; }
.card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.card:hover .card-link .btn-arrow { transform: translateX(3px); }
.project-card-wide {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: stretch;
}
.project-card-wide .card-media {
  min-height: 320px;
  border-bottom: 0;
  border-right: 1px solid var(--border);
}
.project-card-wide .card-body {
  justify-content: center;
}

.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag-pill {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-faint);
}

/* ---------- Skills ---------- */
.skill-list { border-top: 1px solid var(--border-soft); }
.skill-row {
  display: grid;
  grid-template-columns: 2fr 3fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--border-soft);
  transition: background 0.3s;
}
.skill-row:hover { background: var(--accent-wash); }
.skill-name { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: 0.01em; }
.skill-desc { color: var(--text-dim); font-size: 0.9rem; }
.skill-index { font-family: var(--font-mono); color: var(--text-faint); font-size: 0.8rem; }

@media (max-width: 700px) {
  .skill-row { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* ---------- Filters ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.2rem;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.filter-btn:hover { border-color: var(--accent); color: var(--text); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #061019; font-weight: 600; }

/* ---------- Empty state ---------- */
.empty-state {
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.9rem;
}
.empty-state h3 {
  font-family: var(--font-display);
  color: var(--text);
  font-size: 1.5rem;
  margin-bottom: 0.7rem;
}
.empty-state p {
  color: var(--text-dim);
  max-width: 58ch;
  margin: 0 auto;
}

/* ---------- Page intro (sub-pages) ---------- */
.page-intro { padding-top: clamp(3rem, 8vh, 5rem); padding-bottom: 1rem; }
.page-title { font-size: clamp(2.4rem, 6vw, 4rem); text-transform: uppercase; margin-top: 0.6rem; }
.page-desc { max-width: 60ch; color: var(--text-dim); margin-top: 1.2rem; }

/* ---------- Certification cards ---------- */
.cert-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.6rem;
  transition: border-color 0.3s, transform 0.3s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.cert-card:hover { border-color: var(--sand-dim); transform: translateY(-3px); }
.cert-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.cert-status .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--text-faint); }
.cert-status.earned .dot { background: var(--accent); }
.cert-status.earned { color: var(--accent); }
.cert-status.progress .dot { background: var(--amber); }
.cert-status.progress { color: var(--amber); }
.cert-title { font-family: var(--font-display); font-size: 1.5rem; }
.cert-issuer { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-dim); }
.cert-meta { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-faint); }
.cert-desc { color: var(--text-dim); font-size: 0.9rem; }
.cert-foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 0.6rem; border-top: 1px solid var(--border-soft); font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); }
.cert-badge { min-height: 270px; display: flex; align-items: center; }
.cert-link-disabled { color: var(--text-faint); }
.cert-media {
  width: min(180px, 70%);
  align-self: center;
  margin-bottom: 0.3rem;
  padding: 0.6rem;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  background: #f7f5ef;
}
.cert-media img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cert-media-wide {
  width: 100%;
  max-width: 320px;
  padding: 0.35rem;
}

/* ---------- Drawing / gallery items ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
}
.gallery-item {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-panel);
}
.gallery-item .media { aspect-ratio: 4/3; background: var(--bg-raised); overflow: hidden; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; }
.gallery-caption { padding: 0.9rem 1.1rem; display: flex; justify-content: space-between; align-items: center; gap: 0.6rem; }
.gallery-caption .name { font-size: 0.88rem; }
.gallery-caption .dl { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); white-space: nowrap; }

.resume-preview {
  display: block;
  width: min(920px, 100%);
  margin-inline: auto;
  padding: clamp(0.6rem, 2vw, 1rem);
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-panel);
}
.resume-preview img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.32);
}

/* ---------- Timeline (About) ---------- */
.timeline { border-left: 1px solid var(--border); padding-left: 2rem; display: flex; flex-direction: column; gap: 2.4rem; margin-top: 1rem; }
.timeline-item { position: relative; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.02rem;
  top: 0.3rem;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.timeline-date { font-family: var(--font-mono); font-size: 0.74rem; color: var(--accent); letter-spacing: 0.04em; }
.timeline-title { font-size: 1.25rem; margin-top: 0.4rem; font-family: var(--font-display); }
.timeline-org { color: var(--text-dim); font-size: 0.9rem; margin-top: 0.2rem; }
.timeline-desc { color: var(--text-dim); font-size: 0.92rem; margin-top: 0.5rem; max-width: 60ch; }
.about-split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.about-split .section-head { margin-bottom: 1.2rem; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.contact-list { display: flex; flex-direction: column; }
.contact-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--border-soft);
  transition: padding-left 0.3s var(--ease), color 0.3s;
}
.contact-row:hover { padding-left: 0.6rem; color: var(--accent-bright); }
.contact-label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.05em; text-transform: uppercase; }
.contact-value { font-size: 1.05rem; }

.form-field { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.3rem; }
.form-field label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.05em; text-transform: uppercase; }
.form-field input, .form-field textarea {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.25s;
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--accent); }
.form-field textarea { resize: vertical; min-height: 130px; }
.form-note { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); margin-top: 0.8rem; }
.form-success { display: none; border: 1px solid var(--accent-dim); background: var(--accent-wash); border-radius: 4px; padding: 1.1rem 1.2rem; font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent-bright); margin-top: 1.2rem; }
.form-success.show { display: block; }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---------- Project detail template ---------- */
.project-hero {
  padding-top: clamp(3rem, 8vh, 5rem);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  align-items: start;
}
.project-hero-media {
  margin: 0;
  aspect-ratio: 4/3;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.project-hero-media img { width: 100%; height: 100%; object-fit: cover; }
.project-feature {
  max-width: 1380px;
  display: grid;
  grid-template-columns: minmax(360px, 0.72fr) minmax(620px, 1.28fr);
  gap: clamp(2rem, 4vw, 3.6rem);
  align-items: center;
}
.project-visual-stack {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(210px, 0.5fr);
  gap: 1.2rem;
  align-items: stretch;
}
.project-visual-stack .project-hero-media {
  aspect-ratio: auto;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  overflow: visible;
  border: 0;
  background: transparent;
}
.project-feature .project-main-media {
  min-height: 0;
}
.project-visual-stack .image-zoom {
  flex: 1;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-panel);
}
.project-side-media {
  display: grid;
  gap: 1.05rem;
}
.project-main-media .image-zoom {
  aspect-ratio: 4/3;
}
.project-side-media .image-zoom {
  aspect-ratio: 16/10;
}
.project-hero-media.media-contain img {
  object-fit: contain;
  padding: 0.35rem;
  background: #f6f4ef;
}
.project-visual-stack figcaption {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  line-height: 1.3;
}
.image-zoom {
  appearance: none;
  border: 0;
  border-radius: inherit;
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  padding: 0;
  background: transparent;
  color: inherit;
  cursor: zoom-in;
  overflow: hidden;
}
.image-zoom:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}
.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  place-items: center;
  padding: clamp(1rem, 4vw, 2.5rem);
  background: rgba(4, 6, 9, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.image-lightbox.open { display: grid; }
.image-lightbox-panel {
  width: min(1120px, 100%);
  max-height: 92vh;
  display: grid;
  gap: 0.85rem;
}
.image-lightbox img {
  width: 100%;
  max-height: 82vh;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-panel);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.55);
}
.image-lightbox-caption {
  color: var(--text-dim);
  font-size: 0.9rem;
}
.image-lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: rgba(20, 26, 35, 0.92);
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}
.image-lightbox-close:hover { border-color: var(--accent); }
.profile-photo {
  display: grid;
  place-items: center;
  aspect-ratio: 3/4;
  width: min(310px, 100%);
  max-height: 465px;
  justify-self: center;
}
.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: #111722;
}
.project-facts { border-top: 1px solid var(--border-soft); margin-top: 1.6rem; padding-top: 1.2rem; display: flex; flex-direction: column; gap: 0.9rem; }
.project-fact { display: flex; justify-content: space-between; font-size: 0.88rem; }
.project-fact .k { font-family: var(--font-mono); color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.7rem; }
.project-fact .v { color: var(--text-dim); text-align: right; }

.project-media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  margin-top: 1.4rem;
}
.project-media-item {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-panel);
}
.project-media-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--bg-raised);
}
.project-media-item.media-contain img {
  object-fit: contain;
  padding: 0.8rem;
  background: #f6f4ef;
}
.project-media-item figcaption {
  padding: 0.9rem 1rem;
  color: var(--text-dim);
  font-size: 0.86rem;
}

.detail-section { padding-block: clamp(2.6rem, 6vh, 4rem); border-top: 1px solid var(--border-soft); }
.detail-section:first-of-type { border-top: none; }
.detail-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.detail-title { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 0.6rem; }
.detail-body { color: var(--text-dim); max-width: 74ch; margin-top: 1.1rem; }
.detail-body p + p { margin-top: 1rem; }
.detail-list { color: var(--text-dim); margin-top: 1.1rem; padding-left: 1.2rem; display: flex; flex-direction: column; gap: 0.5rem; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
@media (max-width: 860px) {
  .project-hero { grid-template-columns: 1fr; }
  .project-feature,
  .project-card-wide {
    grid-template-columns: 1fr;
  }
  .project-feature {
    max-width: var(--max-width);
  }
  .project-visual-stack {
    grid-template-columns: 1fr;
    width: 100%;
    min-width: 0;
  }
  .project-side-media {
    grid-template-columns: 1fr 1fr;
    width: 100%;
    min-width: 0;
  }
  .project-visual-stack .project-hero-media {
    width: 100%;
    min-width: 0;
    aspect-ratio: auto;
  }
  .project-feature .project-main-media {
    min-height: 0;
  }
  .project-card-wide .card-media {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .two-col { grid-template-columns: 1fr; gap: 1.5rem; }
  .about-split { grid-template-columns: 1fr; }
}

.download-list { display: flex; flex-direction: column; margin-top: 1.2rem; }
.download-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 0.7rem;
  transition: border-color 0.25s, background 0.25s;
}
.download-row:hover { border-color: var(--sand-dim); background: var(--sand-wash); }
.download-name { font-size: 0.92rem; }
.download-meta { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint); margin-top: 0.2rem; }
.download-link { font-family: var(--font-mono); font-size: 0.76rem; color: var(--accent); white-space: nowrap; margin-left: 1rem; }

.project-nav {
  display: flex;
  justify-content: space-between;
  padding-block: 2.4rem;
  border-top: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.project-nav a { color: var(--text-dim); transition: color 0.25s; }
.project-nav a:hover { color: var(--accent); }

@media (max-width: 600px) {
  :root { --gutter: 1.35rem; }

  .site-header { background: rgba(10, 13, 18, 0.9); }
  .nav { padding-block: 0.9rem; gap: 0.85rem; }
  .nav-mark { font-size: 0.86rem; }
  .nav-subtitle { font-size: 0.56rem; line-height: 1.55; }
  .nav-contact {
    gap: 0.15rem 0.65rem;
    font-size: 0.58rem;
    letter-spacing: 0.08em;
  }

  .hero {
    padding-top: 3.1rem;
    padding-bottom: 2.8rem;
  }
  .hero-name { font-size: clamp(3.1rem, 18vw, 4.8rem); }
  .hero-desc,
  .page-desc {
    font-size: 0.98rem;
    line-height: 1.65;
  }
  .hero-actions,
  .filter-bar {
    gap: 0.7rem;
  }
  .btn {
    width: 100%;
    justify-content: center;
    padding-inline: 1rem;
  }

  .section { padding-block: 3rem; }
  .section-head {
    margin-bottom: 1.7rem;
    gap: 1rem;
  }
  .page-intro {
    padding-top: 2.7rem;
    padding-bottom: 0.3rem;
  }
  .page-title { font-size: clamp(2.6rem, 16vw, 3.7rem); }

  .card-grid,
  .project-media-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .project-feature .project-hero-media {
    min-height: 0;
  }
  .project-visual-stack .project-hero-media {
    width: 100%;
    aspect-ratio: auto;
  }
  .project-side-media {
    grid-template-columns: 1fr;
  }
  .project-side-media .image-zoom {
    aspect-ratio: 16/10;
  }
  .image-lightbox {
    padding: 0.8rem;
  }
  .image-lightbox-close {
    top: 0.75rem;
    right: 0.75rem;
  }
  .card-body,
  .cert-card {
    padding: 1.2rem;
  }
  .cert-media,
  .cert-media-wide {
    max-width: 260px;
  }

  .timeline {
    padding-left: 1.4rem;
    gap: 1.8rem;
  }
  .timeline-item::before { left: -1.42rem; }
  .detail-list {
    padding-left: 1rem;
    gap: 0.45rem;
  }
  .profile-photo {
    width: min(260px, 82vw);
    max-height: 390px;
  }

  .download-row {
    align-items: flex-start;
    gap: 0.8rem;
    padding: 0.9rem 1rem;
  }
  .download-meta {
    display: block;
    overflow-wrap: anywhere;
  }

  .resume-preview {
    padding: 0.45rem;
    border-radius: 4px;
  }
  .resume-preview img { box-shadow: 0 16px 32px rgba(0, 0, 0, 0.28); }

  .footer-grid { gap: 1.4rem; }
  .footer-links {
    width: 100%;
    flex-direction: column;
    gap: 0.75rem;
  }
}

/* ---------- Coming soon (Blog) ---------- */
.coming-soon {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: clamp(3rem, 8vh, 5rem) 2rem;
  text-align: center;
  margin-top: 2rem;
}
.coming-soon .eyebrow { justify-content: center; }
.coming-soon h2 { margin-top: 1rem; font-size: clamp(1.8rem, 4vw, 2.6rem); }
.coming-soon p { color: var(--text-dim); max-width: 52ch; margin: 1.1rem auto 0; }

/* ---------- Back to top / scroll progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--accent);
  z-index: 100;
  width: 0%;
  transition: width 0.1s linear;
}

/* ---------- Responsive tweaks ---------- */
@media (max-width: 700px) {
  .section-head { flex-direction: column; align-items: flex-start; }
}