/* ==========================================================================
   Portfolio template — shared stylesheet
   Used by index.html and every page in /projects/
   ========================================================================== */

:root{
  --bg:#f6f7f5;
  --bg-panel:#ffffff;
  --ink:#12181b;
  --ink-soft:#4a555b;
  --ink-faint:#8a9298;
  --line:#dadedb;
  --accent:#1e8fa6;
  --accent-soft:#e4f1f3;
  --radius:2px;
  --wrap:1100px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Source Sans 3', sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Source Sans 3', sans-serif;
  font-weight:700;
  margin:0;
  color:var(--ink);
  letter-spacing:0;
}
.mono{ font-family:'JetBrains Mono', monospace; }
a{ color:inherit; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }
img{ max-width:100%; display:block; }

.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 28px; }

/* ---------- Header ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(246,247,245,0.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 28px; max-width:var(--wrap); margin:0 auto;
}
.nav .brand{
  font-family:'Source Sans 3', sans-serif;
  font-weight:600; font-size:15px; letter-spacing:0.02em;
  text-decoration:none;
}
.nav ul{ list-style:none; display:flex; gap:24px; margin:0; padding:0; }
.nav a.navlink{
  text-decoration:none; font-size:13px; letter-spacing:0.04em;
  text-transform:uppercase; color:var(--ink-soft);
  font-family:'JetBrains Mono', monospace;
  transition:color .15s ease;
}
.nav a.navlink:hover{ color:var(--accent); }

/* ---------- Hero (homepage) ---------- */
.hero{ padding:88px 0 56px; border-bottom:1px solid var(--line); }
.eyebrow{
  font-family:'JetBrains Mono', monospace;
  font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--accent); margin-bottom:16px;
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{ content:''; display:inline-block; width:18px; height:1px; background:var(--accent); }
.hero h1{ font-size:clamp(40px, 7vw, 66px); font-weight:800; margin-bottom:14px; }
.hero .lede{ font-size:clamp(16px, 2vw, 18px); color:var(--ink-soft); max-width:580px; }

/* ---------- Project carousel ---------- */
.grid-section{ padding:56px 0 88px; }

.carousel-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  margin-top:32px;
  padding-top:2px;
  padding-bottom:14px;
  padding-left:max(28px, calc(50vw - (var(--wrap) / 2)));
  padding-right:max(28px, calc(50vw - (var(--wrap) / 2)));
  scrollbar-width:thin;
  scrollbar-color:var(--line) transparent;
}
.carousel-track::-webkit-scrollbar{ height:6px; }
.carousel-track::-webkit-scrollbar-thumb{ background:var(--line); border-radius:6px; }
.carousel-track::-webkit-scrollbar-thumb:hover{ background:var(--accent); }

.carousel-controls{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:18px;
  margin-top:12px;
}

.carousel-btn{
  flex:0 0 auto;
  width:40px; height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--bg-panel);
  color:var(--ink);
  font-family:'JetBrains Mono', monospace;
  font-size:18px;
  line-height:1;
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:border-color .15s ease, color .15s ease, opacity .15s ease;
}
.carousel-btn:hover{ border-color:var(--accent); color:var(--accent); }
.carousel-btn:disabled{ opacity:0.35; cursor:default; }
.carousel-btn:disabled:hover{ border-color:var(--line); color:var(--ink); }

.carousel-dots{
  display:flex; align-items:center; gap:8px;
}
.carousel-dots .dot{
  width:7px; height:7px; border-radius:50%;
  border:1px solid var(--ink-faint);
  background:transparent;
  padding:0; cursor:pointer;
  transition:background .15s ease, border-color .15s ease, transform .15s ease;
}
.carousel-dots .dot:hover{ border-color:var(--accent); }
.carousel-dots .dot.active{
  background:var(--accent); border-color:var(--accent); transform:scale(1.2);
}

.project-card{
  display:block;
  flex:0 0 clamp(250px, 78vw, 340px);
  scroll-snap-align:start;
  text-decoration:none;
  border:1px solid var(--line);
  background:var(--bg-panel);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color .15s ease, transform .15s ease;
}
.project-card:hover{ border-color:var(--accent); transform:translateY(-2px); }
.card-thumb{
  aspect-ratio:16/10;
  background:
    repeating-linear-gradient(45deg, var(--accent-soft), var(--accent-soft) 10px, #eef4f5 10px, #eef4f5 20px);
  display:flex; align-items:center; justify-content:center;
  border-bottom:1px solid var(--line);
}
.card-thumb span{
  font-family:'JetBrains Mono', monospace;
  font-size:12px; color:var(--ink-faint);
  background:var(--bg-panel);
  padding:4px 9px;
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.card-body{ padding:20px 22px 22px; }
.card-body .tags{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:10px; }
.card-body .tag{
  font-size:11.5px; font-family:'JetBrains Mono', monospace;
  padding:3px 8px; background:var(--bg); border:1px solid var(--line);
  border-radius:var(--radius); color:var(--ink-soft);
}
.card-body h3{ font-size:19px; margin-bottom:8px; }
.card-body p{ margin:0; font-size:14.5px; color:var(--ink-soft); }
.card-status{
  display:inline-block; margin-top:12px;
  font-family:'JetBrains Mono', monospace; font-size:11.5px;
  color:var(--accent); text-transform:uppercase; letter-spacing:0.05em;
}

/* ---------- Project detail page ---------- */
.project-hero{ padding:56px 0 40px; border-bottom:1px solid var(--line); }
.back-link{
  display:inline-flex; align-items:center; gap:6px;
  font-family:'JetBrains Mono', monospace; font-size:13px;
  text-decoration:none; color:var(--ink-soft); margin-bottom:28px;
}
.back-link:hover{ color:var(--accent); }
.project-hero h1{ font-size:clamp(30px, 5vw, 44px); margin-bottom:14px; }
.project-hero .tags{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:20px; }
.project-hero .tag{
  font-size:12.5px; font-family:'JetBrains Mono', monospace;
  padding:5px 11px; background:var(--bg-panel); border:1px solid var(--line);
  border-radius:var(--radius); color:var(--ink-soft);
}
.project-hero .lede{ font-size:17px; color:var(--ink-soft); }
.hero-flex{
  display:flex;
  align-items:center;
  gap:40px;
  margin-top:8px;
}
.hero-flex .lede{ flex:1 1 460; max-width:460px; }
.hero-flex .hero-diagram{
  flex:0 1 460px;
  width:460px;
  max-width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  margin-top:0;
}
@media (max-width: 720px){
  .hero-flex{ flex-direction:column; }
  .hero-flex .lede{ max-width:none; }
}

.detail-section{ padding:48px 0; border-bottom:1px solid var(--line); }
.detail-section:last-of-type{ border-bottom:none; }
.detail-section h2{
  font-size:13px; font-family:'JetBrains Mono', monospace;
  text-transform:uppercase; letter-spacing:0.1em; color:var(--ink-faint);
  margin-bottom:18px;
}
.detail-section .body{ max-width:900px; color:var(--ink-soft); font-size:16px; }
.detail-section .body p + p{ margin-top:14px; }
.detail-section .body ul{ padding-left:20px; margin:14px 0 0; }
.detail-section .body li + li{ margin-top:8px; }

.tool-list{ display:flex; flex-wrap:wrap; gap:8px; }
.tool-list .tag{
  font-size:13px; padding:6px 12px; background:var(--bg-panel);
  border:1px solid var(--line); border-radius:var(--radius); color:var(--ink-soft);
}

/* Image gallery / placeholders */
.gallery{
  display:grid; grid-template-columns:repeat(2, 1fr); gap:16px;
}
.gallery.single{ grid-template-columns:1fr; }
.img-placeholder{
  aspect-ratio:4/3;
  border:1px dashed var(--ink-faint);
  border-radius:var(--radius);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:6px; padding:20px; text-align:center;
  background:var(--bg-panel);
  color:var(--ink-faint);
}
.img-placeholder .label{
  font-family:'JetBrains Mono', monospace; font-size:12px;
}
.img-placeholder .hint{ font-size:12px; max-width:220px; }
.img-item{
  aspect-ratio:4/3;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--bg-panel);
}
.img-item img{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
}

/* ---------- Story flow (image-led narrative, used inside detail sections) ---------- */
/* A vertical sequence of image + text pairs, alternating sides, so an image
   sits directly next to the part of the write-up it illustrates instead of
   being grouped into a gallery at the end of the section. */
.story{
  display:flex;
  flex-direction:column;
  gap:52px;
}
.story-block{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
}
.story-block.reverse{
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
}
.story-block.reverse > .story-media{ order:2; }
.story-block.reverse > .story-text{ order:1; }

.story-media{
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--bg-panel);
}
.story-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:contain;
  background:var(--bg-panel);
  display:block;
}
.story-media .img-placeholder{
  width:100%;
  height:100%;
  border:none;
  border-radius:0;
}
.story-media.two-up{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--line);
}
.story-media.two-up img,
.story-media.two-up .img-placeholder{ aspect-ratio:4/3; }

.story-caption{
  margin-top:10px;
  font-family:'JetBrains Mono', monospace;
  font-size:11.5px;
  color:var(--ink-faint);
  line-height:1.5;
}

.story-text{ color:var(--ink-soft); font-size:15.5px; }
.story-text p{ margin:0; }
.story-text p + p{ margin-top:14px; }
.story-text ul{ padding-left:20px; margin:14px 0 0; }
.story-text li + li{ margin-top:8px; }

@media (max-width: 820px){
  .story-block,
  .story-block.reverse{
    grid-template-columns:1fr;
    gap:20px;
  }
  .story-block > .story-media,
  .story-block.reverse > .story-media{ order:1; }
  .story-block > .story-text,
  .story-block.reverse > .story-text{ order:2; }
}

/* Placeholder banner for in-progress project pages */
.placeholder-banner{
  margin-top:18px;
  display:inline-flex; align-items:center; gap:8px;
  font-family:'JetBrains Mono', monospace; font-size:12.5px;
  color:var(--accent); background:var(--accent-soft);
  padding:7px 12px; border-radius:var(--radius);
}

/* ---------- Footer ---------- */
footer.site{ padding:48px 0 40px; border-top:1px solid var(--line); }
.footer-inner{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:16px;
}
.footer-links{ display:flex; gap:18px; }
.footer-links a{
  text-decoration:none; font-family:'JetBrains Mono', monospace; font-size:13px;
  color:var(--ink-soft); border-bottom:1px solid transparent;
  transition:color .15s ease, border-color .15s ease;
}
.footer-links a:hover{ color:var(--accent); border-color:var(--accent); }
.copyline{ font-size:12px; color:var(--ink-faint); font-family:'JetBrains Mono', monospace; }

/* ---------- Responsive ---------- */
@media (max-width: 720px){
  .carousel-btn{ display:none; }
  .gallery{ grid-template-columns:1fr; }
  .nav ul{ gap:14px; }
  .footer-inner{ flex-direction:column; align-items:flex-start; }
}