/* ================================================================
   PURPLE TECHNOLOGIES — Design System
   Brand: circuit-board / lab-bench engineering aesthetic, not a
   generic SaaS template. See MODULES.md Module 4 notes for the
   design rationale (color/type/signature decisions).
   ================================================================ */

:root {
  /* Color */
  --pt-purple: #3d1a78;
  --pt-purple-deep: #1f0d42;
  --pt-amber: #f5a623;
  --pt-amber-dark: #c9840f;
  --pt-green: #2bb673;
  --pt-porcelain: #f7f5fb;
  --pt-graphite: #2b2536;
  --pt-graphite-soft: #6b647a;
  --pt-border: #e7e2f2;
  --pt-white: #ffffff;

  /* Type */
  --pt-font-display: 'Space Grotesk', system-ui, sans-serif;
  --pt-font-body: 'Inter', system-ui, sans-serif;
  --pt-font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --pt-radius: 12px;
  --pt-radius-sm: 8px;
  --pt-shadow: 0 4px 20px rgba(31, 13, 66, 0.08);
  --pt-shadow-lift: 0 12px 32px rgba(31, 13, 66, 0.16);
}

body {
  font-family: var(--pt-font-body);
  color: var(--pt-graphite);
  background: var(--pt-white);
}

h1, h2, h3, h4, h5, h6, .pt-display {
  font-family: var(--pt-font-display);
  letter-spacing: -0.01em;
}

.pt-mono {
  font-family: var(--pt-font-mono);
}

a {
  color: var(--pt-purple);
}

/* ----------------------------------------------------------------
   Utility: eyebrow labels (datasheet-header style — used because
   the catalog genuinely is spec-driven content, not decoration)
   ---------------------------------------------------------------- */
.pt-eyebrow {
  font-family: var(--pt-font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pt-amber-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.pt-eyebrow::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--pt-amber);
  display: inline-block;
}

.pt-section {
  padding: 4rem 0;
}
@media (max-width: 768px) {
  .pt-section { padding: 2.75rem 0; }
}
.pt-section-alt {
  background: var(--pt-porcelain);
}

.btn-pt-primary {
  background: var(--pt-purple);
  color: var(--pt-white);
  border: none;
  font-weight: 600;
  border-radius: var(--pt-radius-sm);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-pt-primary:hover {
  background: var(--pt-purple-deep);
  color: var(--pt-white);
  transform: translateY(-1px);
  box-shadow: var(--pt-shadow-lift);
}
.btn-pt-amber {
  background: var(--pt-amber);
  color: var(--pt-purple-deep);
  border: none;
  font-weight: 700;
  border-radius: var(--pt-radius-sm);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-pt-amber:hover {
  background: var(--pt-amber-dark);
  color: var(--pt-white);
  transform: translateY(-1px);
  box-shadow: var(--pt-shadow-lift);
}
.btn-pt-outline {
  background: transparent;
  color: var(--pt-purple);
  border: 1.5px solid var(--pt-purple);
  font-weight: 600;
  border-radius: var(--pt-radius-sm);
  transition: all .15s ease;
}
.btn-pt-outline:hover {
  background: var(--pt-purple);
  color: var(--pt-white);
}

/* ----------------------------------------------------------------
   Top bar + header
   ---------------------------------------------------------------- */
.pt-topbar {
  background: var(--pt-purple-deep);
  color: rgba(255,255,255,.82);
  font-size: .82rem;
}
.pt-topbar a {
  color: rgba(255,255,255,.82);
  text-decoration: none;
}
.pt-topbar a:hover {
  color: var(--pt-amber);
}

.pt-header {
  background: var(--pt-white);
  border-bottom: 1px solid var(--pt-border);
  transition: box-shadow .2s ease;
}
.pt-header.is-stuck {
  box-shadow: var(--pt-shadow);
}

.pt-logo {
  font-family: var(--pt-font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--pt-purple-deep);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.pt-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--pt-purple), var(--pt-purple-deep));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--pt-amber);
  font-family: var(--pt-font-mono);
  font-weight: 700;
  font-size: .95rem;
}

.pt-nav .nav-link {
  color: var(--pt-graphite);
  font-weight: 600;
  font-size: .92rem;
  padding: .5rem .9rem !important;
}
.pt-nav .nav-link:hover,
.pt-nav .nav-link.active {
  color: var(--pt-purple);
}

/* Mega menu — nested: a left rail of category tabs drives a right-side
   flyout panel (hover-driven, desktop only). Interaction pattern is a
   common catalog-menu convention; the visual language (deep purple rail,
   amber accents, Space Grotesk/mono type) is Purple Technologies' own,
   not borrowed from any competitor's palette. */
.pt-mega {
  position: absolute;
  left: 0;
  top: 100%;
  background: var(--pt-white);
  border-top: 3px solid var(--pt-amber);
  box-shadow: var(--pt-shadow-lift);
  display: none;
  z-index: 1030;
  border-radius: 0 0 var(--pt-radius) var(--pt-radius);
  overflow: hidden;
}
.pt-nav-item:hover .pt-mega {
  display: block;
}

/* Simple (non-nested) flat mega menu — still used where a single grid is enough */
.pt-mega-flat {
  right: 0;
  padding: 2rem 0;
}
.pt-mega-col-title {
  font-family: var(--pt-font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--pt-purple);
  margin-bottom: .75rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--pt-border);
}
.pt-mega-link {
  display: block;
  padding: .3rem 0;
  color: var(--pt-graphite-soft);
  font-size: .88rem;
  text-decoration: none;
}
.pt-mega-link:hover {
  color: var(--pt-purple);
  transform: translateX(2px);
}

/* Nested mega menu: left tab rail + right flyout panel */
.pt-mega-nested {
  width: 900px;
  max-width: calc(100vw - 2rem);
}
.pt-mega-body {
  display: flex;
  min-height: 360px;
}
.pt-mega-tabs {
  flex: 0 0 240px;
  background: var(--pt-purple-deep);
  padding: .75rem 0;
  max-height: 480px;
  overflow-y: auto;
}
.pt-mega-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  width: 100%;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, .78);
  font-size: .9rem;
  font-weight: 600;
  text-align: left;
  padding: .65rem 1.25rem;
  cursor: pointer;
  border-left: 3px solid transparent;
  text-decoration: none;
}
.pt-mega-tab:hover {
  background: rgba(255, 255, 255, .06);
  color: var(--pt-white);
}
.pt-mega-tab.is-active {
  background: rgba(245, 166, 35, .12);
  border-left-color: var(--pt-amber);
  color: var(--pt-white);
}
.pt-mega-tab .bi-chevron-right {
  font-size: .7rem;
  opacity: .6;
}
.pt-mega-panels {
  flex: 1 1 auto;
  padding: 1.75rem 2rem;
}
.pt-mega-panel {
  display: none;
  animation: pt-fade-in .15s ease;
}
.pt-mega-panel.is-active {
  display: grid;
  grid-template-columns: repeat(var(--cols, 3), 1fr);
  gap: 1.75rem;
}
@keyframes pt-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
.pt-mega-panel-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pt-graphite-soft);
  font-size: .88rem;
  height: 100%;
  min-height: 200px;
}

/* ----------------------------------------------------------------
   Hero — the "lab console" search signature
   ---------------------------------------------------------------- */
.pt-hero {
  background:
    radial-gradient(circle at 15% 20%, rgba(245,166,35,.10) 0%, transparent 45%),
    linear-gradient(160deg, var(--pt-purple-deep) 0%, var(--pt-purple) 100%);
  color: var(--pt-white);
  position: relative;
  overflow: hidden;
  padding: 5rem 0 6rem;
}
.pt-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.pt-hero-content { position: relative; z-index: 1; }

.pt-console {
  background: rgba(12, 6, 28, .55);
  border: 1.5px solid rgba(245,166,35,.4);
  border-radius: var(--pt-radius);
  padding: 1.1rem 1.3rem;
  backdrop-filter: blur(6px);
}
.pt-console-input {
  background: transparent;
  border: none;
  color: var(--pt-white);
  font-family: var(--pt-font-mono);
  font-size: 1rem;
  width: 100%;
  outline: none;
}
.pt-console-input::placeholder {
  color: rgba(255,255,255,.45);
}
.pt-console-prompt {
  color: var(--pt-amber);
  font-family: var(--pt-font-mono);
}
.pt-cursor-blink {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  background: var(--pt-amber);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: pt-blink 1s steps(1) infinite;
}
@keyframes pt-blink { 50% { opacity: 0; } }

.pt-chip {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.85);
  font-size: .8rem;
  padding: .35rem .85rem;
  border-radius: 100px;
  text-decoration: none;
  transition: all .15s ease;
}
.pt-chip:hover {
  background: var(--pt-amber);
  border-color: var(--pt-amber);
  color: var(--pt-purple-deep);
}

.pt-stat {
  font-family: var(--pt-font-mono);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--pt-amber);
}

/* ----------------------------------------------------------------
   Category tiles
   ---------------------------------------------------------------- */
.pt-cat-tile {
  background: var(--pt-white);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  padding: 1.5rem 1.25rem;
  text-decoration: none;
  color: var(--pt-graphite);
  display: block;
  height: 100%;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.pt-cat-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--pt-shadow-lift);
  border-color: var(--pt-purple);
  color: var(--pt-graphite);
}
.pt-cat-tile-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--pt-porcelain);
  color: var(--pt-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: .9rem;
}

/* ----------------------------------------------------------------
   Project cards — "datasheet" spec strip footer
   ---------------------------------------------------------------- */
.pt-project-card {
  background: var(--pt-white);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  overflow: hidden;
  height: 100%;
  transition: transform .18s ease, box-shadow .18s ease;
}
.pt-project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--pt-shadow-lift);
}
.pt-project-thumb {
  aspect-ratio: 16/10;
  object-fit: cover;
  width: 100%;
  background: var(--pt-porcelain);
}
.pt-project-badge {
  position: absolute;
  top: .7rem;
  left: .7rem;
  font-family: var(--pt-font-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: .25rem .55rem;
  border-radius: 5px;
}
.pt-spec-strip {
  font-family: var(--pt-font-mono);
  font-size: .72rem;
  color: var(--pt-graphite-soft);
  background: var(--pt-porcelain);
  border-top: 1px dashed var(--pt-border);
  padding: .55rem .9rem;
  display: flex;
  justify-content: space-between;
  gap: .5rem;
}

/* ----------------------------------------------------------------
   Testimonials, FAQ, footer
   ---------------------------------------------------------------- */
.pt-testimonial-card {
  background: var(--pt-white);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  padding: 1.6rem;
  height: 100%;
}

/* Rendered blog post content (from the admin's rich text editor) */
.pt-blog-content {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--pt-graphite);
}
.pt-blog-content h2 {
  font-family: var(--pt-font-display);
  font-size: 1.4rem;
  margin-top: 2rem;
  margin-bottom: .75rem;
}
.pt-blog-content h3 {
  font-family: var(--pt-font-display);
  font-size: 1.15rem;
  margin-top: 1.5rem;
  margin-bottom: .6rem;
}
.pt-blog-content p {
  margin-bottom: 1.1rem;
}
.pt-blog-content img {
  max-width: 100%;
  border-radius: var(--pt-radius-sm);
  margin: 1rem 0;
}
.pt-blog-content blockquote {
  border-left: 3px solid var(--pt-amber);
  padding-left: 1rem;
  color: var(--pt-graphite-soft);
  font-style: italic;
  margin: 1.25rem 0;
}
.pt-blog-content pre {
  background: var(--pt-porcelain);
  border-radius: var(--pt-radius-sm);
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--pt-font-mono);
  font-size: .85rem;
}
.pt-blog-content ul, .pt-blog-content ol {
  margin-bottom: 1.1rem;
  padding-left: 1.5rem;
}

.pt-accordion .accordion-button {
  font-weight: 600;
  font-family: var(--pt-font-display);
}
.pt-accordion .accordion-button:not(.collapsed) {
  background: var(--pt-porcelain);
  color: var(--pt-purple);
  box-shadow: none;
}
.pt-accordion .accordion-button:focus {
  box-shadow: none;
  border-color: var(--pt-border);
}

.pt-footer {
  background: var(--pt-purple-deep);
  color: rgba(255,255,255,.68);
}
.pt-footer a {
  color: rgba(255,255,255,.68);
  text-decoration: none;
}
.pt-footer a:hover {
  color: var(--pt-amber);
}
.pt-footer h6 {
  font-family: var(--pt-font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--pt-white);
  margin-bottom: 1.1rem;
}
.pt-social-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .15s ease;
}
.pt-social-icon:hover {
  background: var(--pt-amber);
  color: var(--pt-purple-deep);
}

/* ----------------------------------------------------------------
   Scroll-reveal (progressive enhancement; content visible without JS)
   ---------------------------------------------------------------- */
.pt-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}
.pt-reveal.pt-revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .pt-reveal { opacity: 1; transform: none; transition: none; }
  .pt-cursor-blink { animation: none; }
}