/* =========================================================
   panelpackaging.com — design tokens
   Palette: cleanroom off-white + circuit-indigo / scrap-amber accents
   Type: Space Grotesk (display) + IBM Plex Sans (body) + JetBrains Mono (utility)
   ========================================================= */
:root{
  --bg: #f2f4f0;
  --bg-elev: #eaece5;
  --panel: #ffffff;
  --line: #d7dbd0;
  --line-strong: #b9bfb2;
  --ink: #171e17;
  --ink-dim: #566056;
  --ink-faint: #8b9488;
  --indigo: #3346d1;
  --indigo-strong: #2532a8;
  --indigo-wash: rgba(51,70,209,0.08);
  --amber: #c98a2c;
  --amber-wash: rgba(201,138,44,0.12);
  --radius: 4px;
  --wrap: 1180px;
  --display: 'Space Grotesk', ui-sans-serif, sans-serif;
  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  background-image: linear-gradient(90deg, rgba(0,0,0,0.02) 1px, transparent 1px);
  background-size: 28px 100%;
}

.wrap{ max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
a{ color: inherit; }
h1,h2,h3{ font-family: var(--display); font-weight: 600; letter-spacing: -0.01em; margin: 0; }
p{ margin: 0; }

/* =========== header =========== */
.site-header{
  position: sticky; top:0; z-index: 40;
  background: rgba(242,244,240,0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:64px; }
.brand{ display:flex; align-items:center; gap:8px; font-family: var(--display); font-weight:600; text-decoration:none; font-size:1.05rem; color: var(--ink); }
.brand-mark{ color: var(--indigo); display:inline-flex; }
.brand-tld{ color: var(--ink-faint); font-weight:400; }
.site-nav{ display:flex; align-items:center; gap:26px; font-family: var(--mono); font-size:0.82rem; }
.site-nav a{ text-decoration:none; color: var(--ink-dim); transition: color .15s ease; }
.site-nav a:hover, .site-nav a:focus-visible{ color: var(--ink); }
.nav-cta{ border:1px solid var(--indigo); color: var(--indigo-strong) !important; padding:7px 14px; border-radius: var(--radius); }
.nav-cta:hover{ background: var(--indigo-wash); }
.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span{ width:22px; height:2px; background: var(--ink); display:block; }

/* =========== hero =========== */
.hero{ padding: 68px 28px 40px; }
.eyebrow{
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em; color: var(--indigo-strong);
  margin-bottom: 18px; text-transform: uppercase;
}
.hero-title{ font-size: clamp(2rem, 4.4vw, 3.1rem); line-height: 1.12; max-width: 16ch; color: var(--ink); }
.hero-title .strike{ text-decoration: line-through; text-decoration-color: var(--amber); text-decoration-thickness: 3px; color: var(--ink-faint); }
.hero-title em{ font-style: normal; color: var(--indigo-strong); }
.hero-sub{ margin-top: 22px; max-width: 62ch; color: var(--ink-dim); font-size: 1.08rem; }
.hero-sub strong{ color: var(--ink); font-family: var(--mono); font-weight:600; }
.hero-actions{ margin-top: 30px; display:flex; gap:14px; flex-wrap:wrap; }

.btn{
  font-family: var(--mono); font-size: 0.86rem; text-decoration:none; display:inline-block;
  padding: 12px 20px; border-radius: var(--radius); border: 1px solid transparent; cursor:pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--indigo); color: #fff; font-weight:600; }
.btn-primary:hover{ background: var(--indigo-strong); }
.btn-ghost{ border-color: var(--line-strong); color: var(--ink-dim); }
.btn-ghost:hover{ border-color: var(--indigo); color: var(--ink); }

/* wafer vs panel comparison */
.compare{
  margin-top: 56px; display:flex; align-items:center; justify-content:center; gap: 28px; flex-wrap: wrap;
}
.compare-panel{ text-align:center; }
.compare-svg{ width: 220px; height: 220px; display:block; }
.shape-wafer{ fill: var(--amber-wash); stroke: var(--amber); stroke-width: 2; }
.shape-panel{ fill: var(--indigo-wash); stroke: var(--indigo); stroke-width: 2; }
.die-grid rect{ fill: var(--panel); stroke: var(--line-strong); stroke-width: 1; }
.compare-caption{ margin-top: 14px; font-size: 0.86rem; color: var(--ink-dim); display:flex; flex-direction:column; align-items:center; gap:6px; }
.compare-metric{ margin-top: 4px; font-family: var(--mono); font-weight:600; font-size: 0.92rem; color: var(--ink); }
.tag{ font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.06em; padding: 3px 8px; border-radius: 999px; }
.tag-waste{ background: var(--amber-wash); color: var(--amber); }
.tag-yield{ background: var(--indigo-wash); color: var(--indigo-strong); }
.compare-arrow{ color: var(--ink-faint); }

/* =========== stat strip =========== */
.stat-strip{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); background: var(--panel); }
.stat-strip-inner{ display:flex; align-items:stretch; padding: 26px 28px; gap: 0; flex-wrap: wrap; }
.stat{ flex:1; min-width: 190px; padding: 4px 20px; }
.stat-value{ display:block; font-family: var(--display); font-size: 1.55rem; color: var(--indigo-strong); font-weight:700; }
.stat-label{ display:block; margin-top:6px; font-size: 0.8rem; color: var(--ink-dim); line-height:1.4; }
.stat-divider{ width:1px; background: var(--line); margin: 0 4px; }

/* =========== section shared =========== */
.section-eyebrow{ font-family: var(--mono); font-size:0.74rem; letter-spacing:0.1em; color: var(--ink-faint); margin-bottom:12px; }
.section-title{ font-size: clamp(1.5rem, 2.4vw, 2rem); color: var(--ink); margin-bottom: 34px; }
section{ padding: 84px 0; }

/* thesis */
.thesis-grid{ display:grid; grid-template-columns: 1fr 1.15fr; gap: 56px; }
.thesis-lede{ font-size: 1.15rem; color: var(--ink); line-height:1.6; }
.thesis-lede strong{ color: var(--indigo-strong); font-family: var(--mono); font-weight:600; }
.thesis-points{ display:flex; flex-direction:column; gap:26px; }
.thesis-point{ border-left: 2px solid var(--line-strong); padding-left: 20px; }
.thesis-point h3{ font-size:0.98rem; color: var(--ink); margin-bottom:8px; }
.thesis-point p{ color: var(--ink-dim); font-size:0.94rem; }

/* applications */
.applications{ background: var(--bg-elev); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.app-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.app-card{
  background: var(--panel); border:1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.app-card:hover{ border-color: var(--indigo); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(51,70,209,0.08); }
.app-icon{ color: var(--indigo); width:40px; height:40px; margin-bottom:18px; }
.app-icon svg{ width:100%; height:100%; }
.app-card h3{ font-size: 0.98rem; margin-bottom:10px; line-height:1.35; }
.app-card p{ font-size: 0.88rem; color: var(--ink-dim); }

/* name section */
.name-grid{ display:grid; grid-template-columns: 1.2fr 0.8fr; gap: 56px; }
.name-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:18px; }
.name-list li{ padding-left: 22px; position:relative; color: var(--ink-dim); font-size:0.96rem; }
.name-list li::before{ content:"›"; position:absolute; left:0; color: var(--indigo); font-family: var(--mono); }
.name-list strong{ color: var(--ink); }
.name-panel{ background: var(--panel); border:1px solid var(--line); border-radius: var(--radius); padding: 24px; height: fit-content; }
.name-panel-label{ font-family: var(--mono); font-size:0.7rem; letter-spacing:0.1em; color: var(--ink-faint); margin-bottom:16px; }
.spec-list{ margin:0; display:flex; flex-direction:column; gap:12px; }
.spec-list > div{ display:flex; justify-content:space-between; gap: 12px; border-bottom:1px dashed var(--line); padding-bottom:10px; font-size:0.86rem; }
.spec-list dt{ color: var(--ink-faint); font-family: var(--mono); }
.spec-list dd{ margin:0; color: var(--ink); text-align:right; font-family: var(--mono); }

/* comparables */
.comparables-body{ max-width: 76ch; color: var(--ink-dim); font-size:1rem; line-height:1.7; }

/* offer */
.offer{ background: var(--panel); border-top:1px solid var(--line); }
.offer-inner{ display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:start; }
.offer-copy p{ margin-top:16px; color: var(--ink-dim); }
.offer-form{ display:flex; flex-direction:column; gap:12px; background: var(--bg-elev); border:1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.offer-form label{ font-family: var(--mono); font-size:0.76rem; color: var(--ink-dim); margin-top:6px; }
.offer-form input, .offer-form textarea{
  background: var(--panel); border:1px solid var(--line-strong); border-radius: var(--radius); color: var(--ink);
  padding: 10px 12px; font-family: var(--sans); font-size:0.94rem; resize: vertical;
}
.offer-form input:focus, .offer-form textarea:focus{ outline: 2px solid var(--indigo); outline-offset: 1px; border-color: var(--indigo); }
.offer-form button{ margin-top: 8px; width: fit-content; }
.hp-field{ position:absolute; left:-9999px; }
.form-note{ font-family: var(--mono); font-size:0.85rem; color: var(--indigo-strong); }

/* footer */
.site-footer{ border-top:1px solid var(--line); padding: 30px 0 40px; }
.footer-inner{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px; font-family: var(--mono); font-size:0.8rem; color: var(--ink-faint); }
.footer-inner nav{ display:flex; gap:22px; }
.footer-inner a{ text-decoration:none; color: var(--ink-dim); }
.footer-inner a:hover{ color: var(--indigo); }

/* reveal-on-scroll */
.reveal{ opacity:0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* =========== responsive =========== */
@media (max-width: 920px){
  .site-nav{ position:fixed; inset:64px 0 0 0; background: var(--bg); flex-direction:column; align-items:flex-start; padding: 30px 28px; gap:22px; display:none; }
  .site-nav.open{ display:flex; }
  .nav-toggle{ display:flex; }
  .thesis-grid, .name-grid, .offer-inner{ grid-template-columns: 1fr; gap: 32px; }
  .app-grid{ grid-template-columns: repeat(2, 1fr); }
  .stat-divider{ display:none; }
  .compare{ gap: 16px; }
  .compare-arrow{ transform: rotate(90deg); }
}
@media (max-width: 540px){
  .app-grid{ grid-template-columns: 1fr; }
  .header-inner{ height:58px; }
  .compare-svg{ width: 160px; height: 160px; }
}