/* Scan a Stuffy — Blueprint Redesign */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

:root {
  --bg: #132C46;
  --bg-panel: #0F2438;
  --text: #DCEAF2;
  --muted: #8FB4CE;
  --accent: #E8703A;
  --tertiary: #4A6B85;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: IBM Plex Sans, system-ui, sans-serif;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: Space Grotesk, system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
}

a { color: inherit; }

/* ── Title block bar ───────────────────────────────────────
   Technical-drawing header strip above the nav. */
.title-block {
  background: var(--bg-panel);
  border-bottom: 1px solid var(--tertiary);
}
.title-block__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.45rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  font-family: IBM Plex Mono, monospace;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tertiary);
}

/* Nav active link */
nav a.nav-active {
  color: var(--accent) !important;
}

/* ── CTA buttons — sharp corners, orange accent ──────────── */
.btn-primary {
  display: inline-block;
  background-color: var(--accent);
  color: var(--bg);
  font-family: IBM Plex Mono, monospace;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.875rem 2rem;
  border-radius: 2px;
  border: 1px solid var(--accent);
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}
.btn-primary:hover {
  background-color: transparent;
  color: var(--accent);
}

.btn-secondary {
  display: inline-block;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: IBM Plex Mono, monospace;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.75rem 1.75rem;
  border-radius: 2px;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-secondary:hover {
  background-color: var(--accent);
  color: var(--bg);
}

/* Sections */
.section-panel { background-color: var(--bg-panel); }

/* Cards */
.card {
  background: var(--bg-panel);
  border-radius: 2px;
  border: 1px solid var(--tertiary);
  padding: 2rem;
}

/* ── Chapter mark: section divider ───────────────────────── */
.chapter-mark {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.chapter-mark__label {
  font-family: IBM Plex Mono, monospace;
  font-size: 0.88rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
}
.chapter-mark__rule {
  flex: 1;
  height: 1px;
  background: var(--accent);
  opacity: 0.35;
}

/* Eyebrow / mono label */
.eyebrow {
  font-family: IBM Plex Mono, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

/* FAQ Accordion */
.faq-item { border-bottom: 1px solid var(--tertiary); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.25rem 0;
  background: none;
  border: none;
  text-align: left;
  font-family: IBM Plex Sans, sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  cursor: pointer;
  gap: 1rem;
}
.faq-question:hover { color: var(--accent); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  color: var(--muted);
  font-size: 0.975rem;
  line-height: 1.8;
}
.faq-answer.open { max-height: 500px; }
.faq-answer-inner { padding-bottom: 1.25rem; }
.faq-icon { transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* ── Numbered step nodes with dashed leader lines ────────── */
.step-node {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg-panel);
  color: var(--accent);
  font-family: IBM Plex Mono, monospace;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-leader-v {
  width: 0;
  flex: 1;
  min-height: 2.5rem;
  margin: 0.4rem 0;
  border-left: 2px dashed var(--tertiary);
}

/* Horizontal step row (homepage condensed steps) */
.step-row {
  display: flex;
  align-items: flex-start;
  gap: 0;
}
.step-row-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.85rem;
  position: relative;
  padding: 0 0.75rem;
}
.step-row-leader {
  flex: 1;
  height: 0;
  border-top: 2px dashed var(--tertiary);
  margin-top: 1.5rem;
  min-width: 1rem;
}
@media (max-width: 780px) {
  .step-row { flex-direction: column; gap: 2.25rem; }
  .step-row-leader { display: none; }
}

/* Gallery grid */
.gallery-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
@media (max-width: 500px) {
  .gallery-pair { grid-template-columns: 1fr; }
}
.gallery-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--tertiary);
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
  gap: 0.5rem;
  min-height: 200px;
}

/* Carousel slide wrapper for diagram-pair content */
.carousel-slide-diagram { min-width: 100%; padding: 1.75rem; }

/* ── Diagram panel: before/after with corner brackets ────── */
.diagram-panel {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--tertiary);
}
.diagram-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.diagram-panel__bracket { position: absolute; width: 20px; height: 20px; pointer-events: none; }
.diagram-panel__bracket--tl { top: 8px; left: 8px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.diagram-panel__bracket--tr { top: 8px; right: 8px; border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.diagram-panel__bracket--bl { bottom: 8px; left: 8px; border-bottom: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.diagram-panel__bracket--br { bottom: 8px; right: 8px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.diagram-panel__label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(15,36,56,0.88);
  border-top: 1px solid var(--tertiary);
  color: var(--text);
  font-family: IBM Plex Mono, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 0.75rem;
}
.diagram-panel__label--accent { color: var(--accent); }

.diagram-pair {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.diagram-pair > .diagram-panel { flex: 1; min-width: 0; }
.diagram-arrow {
  flex: 0 0 auto;
  width: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.4rem;
}
@media (max-width: 640px) {
  .diagram-pair { flex-direction: column; }
  .diagram-arrow { width: auto; height: 1.75rem; transform: rotate(90deg); }
}

/* ── Spec table (pricing) ─────────────────────────────────── */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: IBM Plex Mono, monospace;
  font-size: 0.85rem;
  border: 1px solid var(--tertiary);
}
.spec-table th,
.spec-table td {
  border: 1px solid var(--tertiary);
  padding: 0.9rem 1.25rem;
  text-align: left;
}
.spec-table th {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-size: 0.72rem;
  background: var(--bg-panel);
}
.spec-table td { color: var(--text); }
.spec-table tbody tr { background: var(--bg-panel); }

/* Form styles */
.form-group { display: flex; flex-direction: column; gap: 0.6rem; }
.form-label {
  font-family: IBM Plex Mono, monospace;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--tertiary);
  border-radius: 2px;
  font-family: IBM Plex Sans, sans-serif;
  font-size: 1rem;
  background: var(--bg-panel);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--tertiary); }
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 112, 58, 0.18);
}
.form-textarea { resize: vertical; min-height: 120px; }

/* Blockquote */
blockquote {
  font-family: Space Grotesk, sans-serif;
  font-style: normal;
  font-size: 1.3rem;
  line-height: 1.6;
  color: var(--text);
}

/* Value props */
.value-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

/* Mobile nav */
@media (max-width: 767px) {
  #mobile-menu { display: none; }
  #mobile-menu.open { display: block; }
}

/* Before/After Carousel */
.carousel-wrap {
  position: relative;
  border: 1px solid var(--tertiary);
  overflow: hidden;
  touch-action: pan-y;
  user-select: none;
}
.carousel-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}
.carousel-slide {
  min-width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.carousel-img {
  width: 100%;
  height: 320px;
  object-fit: contain;
  object-position: center;
  display: block;
  background: var(--bg-panel);
}
@media (max-width: 600px) {
  .carousel-slide { grid-template-columns: 1fr; }
  .carousel-img { height: 200px; }
}
.carousel-label {
  position: absolute;
  bottom: 0.6rem;
  left: 0.6rem;
  font-family: IBM Plex Mono, monospace;
  font-size: 0.66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  color: var(--text);
  background: rgba(15,36,56,0.85);
  border: 1px solid var(--tertiary);
}
.carousel-label-after { color: var(--accent); border-color: var(--accent); }
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-panel);
  border: 1px solid var(--tertiary);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.35rem;
  color: var(--text);
  transition: border-color 0.2s, color 0.2s;
  z-index: 10;
}
.carousel-btn:hover { border-color: var(--accent); color: var(--accent); }
.carousel-btn-prev { left: 0.75rem; }
.carousel-btn-next { right: 0.75rem; }
.carousel-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--tertiary);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}
.carousel-dot.active { background: var(--accent); transform: scale(1.3); }