/* CTRL — Bulk Custom Precision Metal */
:root {
  --blue: #8DC1E9;          /* sampled from icon set */
  --blue-soft: #EAF4FC;
  --blue-line: #BFDCF2;
  --blue-deep: #23506F;     /* darker stop of the same hue, for accents/text */
  --ink: #2E3338;           /* icon outline gray */
  --ink-soft: #5C646C;
  --steel: #C7CDD3;
  --paper: #FFFFFF;
  --paper-dim: #F5F8FB;
  --danger: #E24B4A;
  --radius: 10px;
  --header-h: 64px;
  --footer-h: 52px;
  --font-sans: 'Barlow', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.55;
  padding-top: var(--header-h);
  padding-bottom: var(--footer-h);
}

/* ---------- fixed header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center; gap: 16px;
  padding: 0 20px;
  background: var(--paper);
  border-bottom: 1px solid var(--blue-line);
}
.site-header .logo { height: 34px; display: block; }
.site-header .logo img { height: 100%; width: auto; display: block; }
.header-tag {
  font-size: 13px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.header-tag .usa { color: var(--blue-deep); font-weight: 600; }
.header-spacer { flex: 1; }
.header-link {
  font-size: 14px; font-weight: 600; color: var(--blue-deep);
  text-decoration: none; padding: 8px 14px; border: 1px solid var(--blue-line);
  border-radius: var(--radius); background: var(--blue-soft);
}
.header-link:hover { border-color: var(--blue); }

/* ---------- fixed footer ---------- */
.site-footer {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  height: var(--footer-h);
  display: flex; align-items: center; justify-content: center; gap: 18px;
  padding: 0 16px;
  background: var(--paper);
  border-top: 1px solid var(--blue-line);
  font-size: 13px; color: var(--ink-soft);
}
.site-footer a { color: var(--blue-deep); font-weight: 600; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .dot { color: var(--steel); }

/* ---------- dimension-line motif (signature) ---------- */
.dim-rule {
  display: flex; align-items: center; gap: 10px;
  color: var(--blue-deep); font-family: var(--font-mono); font-size: 12px;
  margin: 6px 0 18px;
}
.dim-rule::before, .dim-rule::after {
  content: ""; flex: 1; height: 1px; background: var(--blue);
}
.dim-rule::before { background: linear-gradient(90deg, transparent, var(--blue) 12px, var(--blue)); }
.dim-rule::after { background: linear-gradient(270deg, transparent, var(--blue) 12px, var(--blue)); }

/* ---------- landing ---------- */
.landing { max-width: 1080px; margin: 0 auto; padding: 40px 20px calc(var(--footer-h) + 30px); }
.hero { text-align: center; margin-bottom: 8px; }
.hero h1 {
  font-size: clamp(30px, 5vw, 46px); font-weight: 700; letter-spacing: -0.01em;
  line-height: 1.15;
}
.hero .sub {
  margin-top: 10px; font-size: clamp(15px, 2.4vw, 18px); color: var(--blue-deep); font-weight: 600;
}
.hero .standby {
  margin: 14px auto 0; max-width: 560px; color: var(--ink-soft); font-size: 15px;
}
.part-grid {
  margin-top: 34px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}
.part-card {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 18px 12px 16px;
  background: var(--paper);
  border: 1px solid var(--blue-line); border-radius: 14px;
  text-decoration: none; color: var(--ink);
  transition: transform .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.part-card:hover, .part-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--blue);
  box-shadow: 0 6px 18px rgba(141,193,233,.35);
  outline: none;
}
.part-card img { width: 100%; max-width: 128px; height: auto; border-radius: 12px; }
.part-card .name { font-weight: 700; font-size: 17px; }
.part-card .spec { font-family: var(--font-mono); font-size: 11px; color: var(--ink-soft); }

.sales-strip {
  margin: 36px auto 0; max-width: 720px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px;
  padding: 18px 20px;
  background: var(--blue-soft); border: 1px solid var(--blue-line); border-radius: 14px;
  text-align: center;
}
.sales-strip p { font-weight: 600; color: var(--blue-deep); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: var(--radius);
  font-family: var(--font-sans); font-size: 15px; font-weight: 700;
  border: 1px solid var(--blue-line); background: var(--paper); color: var(--blue-deep);
  cursor: pointer; text-decoration: none; transition: background .12s, border-color .12s;
}
.btn:hover { border-color: var(--blue); background: var(--blue-soft); }
.btn-primary { background: var(--blue-deep); border-color: var(--blue-deep); color: #fff; }
.btn-primary:hover { background: #1B415C; border-color: #1B415C; }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- editor layout ---------- */
.editor-wrap {
  max-width: 1240px; margin: 0 auto;
  /* bottom padding must clear the fixed footer so the last
     action (Contact sales) is never hidden behind it */
  padding: 18px 16px calc(var(--footer-h) + 34px);
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, 440px);
  gap: 18px; align-items: start;
}
.viewer-col { position: sticky; top: calc(var(--header-h) + 14px); }
.viewer-shell {
  position: relative; border: 1px solid var(--blue-line); border-radius: 14px;
  background: var(--paper-dim); overflow: hidden;
  aspect-ratio: 4 / 3; min-height: 320px;
}
#viewport { position: absolute; inset: 0; touch-action: none; }
#viewport canvas { display: block; }
.viewer-hud {
  position: absolute; top: 10px; left: 10px; right: 10px;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 10px;
  pointer-events: none;
}
.hud-part {
  pointer-events: auto;
  background: rgba(255,255,255,.92); border: 1px solid var(--blue-line);
  border-radius: 8px; padding: 6px 10px;
  font-weight: 700; font-size: 14px;
}
.unit-toggle {
  pointer-events: auto; display: inline-flex;
  border: 1px solid var(--blue-line); border-radius: 8px; overflow: hidden;
  background: rgba(255,255,255,.92);
}
.unit-toggle button {
  border: 0; background: transparent; padding: 6px 12px; cursor: pointer;
  font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft);
}
.unit-toggle button.active { background: var(--blue-deep); color: #fff; }
.viewer-hint {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  font-size: 12px; color: var(--ink-soft);
  background: rgba(255,255,255,.9); border: 1px solid var(--blue-line);
  border-radius: 999px; padding: 4px 12px; white-space: nowrap; pointer-events: none;
}
.dim-label {
  position: absolute; transform: translate(-50%, -50%);
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 600;
  color: var(--blue-deep);
  background: rgba(255,255,255,.94); border: 1px solid var(--blue-line);
  border-radius: 6px; padding: 1px 6px; pointer-events: none; white-space: nowrap;
}
.dim-label.hole-active { color: #fff; background: var(--blue-deep); border-color: var(--blue-deep); }

/* ---------- side panel ---------- */
.panel { display: flex; flex-direction: column; gap: 14px; }
.panel-section {
  border: 1px solid var(--blue-line); border-radius: 14px;
  background: var(--paper); padding: 14px 16px 16px;
}
.panel-section h2 {
  font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--blue-deep); font-weight: 700; margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.panel-section h2::after { content: ""; flex: 1; height: 1px; background: var(--blue-line); }

.ctl-row { display: flex; align-items: center; gap: 10px; margin: 10px 0; }
.ctl-row label { flex: 0 0 108px; font-size: 14px; font-weight: 600; color: var(--ink-soft); }
.ctl-row input[type="range"] { flex: 1; accent-color: var(--blue-deep); min-width: 0; }
.ctl-val {
  flex: 0 0 92px; display: flex; align-items: center; gap: 4px;
}
.ctl-val input {
  width: 62px; font-family: var(--font-mono); font-size: 13px; text-align: right;
  border: 1px solid var(--blue-line); border-radius: 6px; padding: 5px 6px; color: var(--ink);
}
.ctl-val .u { font-family: var(--font-mono); font-size: 11px; color: var(--ink-soft); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 6px; }
.chip {
  border: 1px solid var(--blue-line); background: var(--paper); color: var(--ink);
  border-radius: 999px; padding: 7px 14px; font-size: 13px; font-weight: 600; cursor: pointer;
}
.chip:hover { border-color: var(--blue); }
.chip.active { background: var(--blue-deep); border-color: var(--blue-deep); color: #fff; }

/* linked-slider toggle (e.g. bracket flange heights) */
.link-row { display: flex; justify-content: flex-end; margin: -2px 0 8px; }
.link-toggle {
  border: 1px dashed var(--blue-line); background: var(--paper); color: var(--ink-soft);
  border-radius: 999px; padding: 5px 12px; font-size: 12px; font-weight: 600;
  font-family: var(--font-mono); cursor: pointer;
}
.link-toggle:hover { border-color: var(--blue); }
.link-toggle.on {
  border-style: solid; border-color: var(--blue);
  background: var(--blue-soft); color: var(--blue-deep);
}

.field { margin: 10px 0; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-soft); margin-bottom: 5px; }
.field label .req { color: var(--danger); }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 12px; font-size: 15px; font-family: var(--font-sans);
  border: 1px solid var(--blue-line); border-radius: var(--radius); background: var(--paper);
  color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(141,193,233,.35);
}
.field select option:disabled { color: #A9B2BA; }
.qty-readout { font-family: var(--font-mono); font-weight: 700; color: var(--blue-deep); font-size: 15px; }
.hint { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

/* required-field miss: faint glowing red */
@keyframes glowRed {
  0%, 100% { box-shadow: 0 0 0 3px rgba(226,75,74,.16); border-color: rgba(226,75,74,.55); }
  50% { box-shadow: 0 0 10px 4px rgba(226,75,74,.35); border-color: var(--danger); }
}
.invalid-glow { animation: glowRed 1.4s ease-in-out 3; border-color: var(--danger) !important; }

.action-stack { display: flex; flex-direction: column; gap: 10px; }
.sales-note { text-align: center; font-size: 13px; color: var(--ink-soft); }

/* ---------- modals ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(46,51,56,.45);
  display: none; align-items: center; justify-content: center; padding: 18px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--paper); border-radius: 16px; border: 1px solid var(--blue-line);
  width: 100%; max-width: 480px; max-height: calc(100vh - 40px); overflow: auto;
  padding: 22px 22px 20px;
}
.modal h3 { font-size: 20px; margin-bottom: 4px; }
.modal .modal-sub { color: var(--ink-soft); font-size: 14px; margin-bottom: 12px; }
.modal .modal-actions { display: flex; gap: 10px; margin-top: 16px; }
.modal .modal-actions .btn { flex: 1; }
.dropzone {
  border: 2px dashed var(--blue-line); border-radius: 12px; padding: 18px;
  text-align: center; color: var(--ink-soft); font-size: 14px; cursor: pointer;
  background: var(--paper-dim);
}
.dropzone.hasfile { border-color: var(--blue); color: var(--blue-deep); font-weight: 600; }
.success-check {
  width: 54px; height: 54px; border-radius: 50%; margin: 4px auto 12px;
  background: var(--blue-soft); border: 2px solid var(--blue);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-deep); font-size: 26px; font-weight: 700;
}
.dl-row { display: flex; gap: 10px; margin-top: 12px; }
.dl-row a { flex: 1; }

/* shim shape picker */
.shape-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(78px, 1fr)); gap: 10px; }
.shape-card {
  border: 1px solid var(--blue-line); border-radius: 12px; padding: 12px 6px;
  background: var(--paper); cursor: pointer; text-align: center;
  font-weight: 700; font-size: 13px; color: var(--ink);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.shape-card:hover { border-color: var(--blue); background: var(--blue-soft); }
.shape-card svg { width: 44px; height: 44px; stroke: var(--blue-deep); fill: var(--blue-soft); stroke-width: 2; }

/* company page */
.company-wrap { max-width: 760px; margin: 0 auto; padding: 46px 20px calc(var(--footer-h) + 30px); text-align: center; }
.company-wrap h1 { font-size: 34px; margin-bottom: 8px; }
.company-wrap p { color: var(--ink-soft); margin: 10px 0; }

/* ---------- responsive ---------- */
@media (max-width: 940px) {
  .editor-wrap { grid-template-columns: 1fr; padding-bottom: calc(var(--footer-h) + 40px); }
  .viewer-col { position: static; }
  .header-tag { display: none; }
  .ctl-row label { flex-basis: 86px; font-size: 13px; }
  .ctl-val { flex-basis: 84px; }
}
@media (max-width: 480px) {
  .site-header { padding: 0 12px; }
  .site-footer { font-size: 12px; gap: 10px; }
  .part-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}