/* ===========================
   ACCESSIBILITY UTILITY
=========================== */
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ===========================
   BASE
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; background: #f3f4f6; color: #000; font-size: 14px; line-height: 1.5; }
img { max-width: 100%; height: auto; display: block; }
button, input, select { font: inherit; }

/* ===========================
   LAYOUT
=========================== */
#sel-app { width: 100%; max-width: 900px; margin: 0 auto; padding: 48px 24px 80px; }

/* ===========================
   RESET BUTTON
=========================== */
.sel-reset-btn {
  margin-left: auto; flex-shrink: 0;
  background: transparent; border: 1px solid rgba(209,0,0,.35); color: #d10000;
  border-radius: 999px; padding: 3px 11px; font-size: 10px; cursor: pointer;
  font-weight: 700; letter-spacing: .04em; line-height: 1.6;
  transition: background .15s;
}
.sel-reset-btn:hover { background: rgba(209,0,0,.07); }

/* ===========================
   HERO
=========================== */
.sel-hero { text-align: center; margin-bottom: 32px; padding: 8px 0; }
.sel-hero h1 {
  font-size: clamp(22px, 4vw, 32px); font-weight: 800;
  line-height: 1.15; letter-spacing: -.02em; color: #000;
}
.sel-hero h1 em { font-style: normal; color: #d10000; }
.sel-hero p { color: #747474; margin-top: 8px; font-size: 14px; line-height: 1.6; }

/* ===========================
   SECTION LABELS
=========================== */
.sel-sec-label {
  display: flex; align-items: center; gap: 10px;
  font-size: 11px; font-weight: 800; text-transform: uppercase;
  letter-spacing: .08em; color: #9ca3af; margin-bottom: 10px; padding-left: 4px;
}
.sel-sec-num {
  width: 22px; height: 22px; border-radius: 50%;
  background: #e5e7eb; color: #9ca3af; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 800;
}
.sel-sec-num.done { background: #d10000; color: #fff; }
.sel-sec-label.active { color: #d10000; }
.sel-sec-label.active .sel-sec-num { background: #d10000; color: #fff; box-shadow: 0 0 0 4px rgba(209,0,0,.12); }

/* ===========================
   PANEL
=========================== */
.sel-panel {
  background: #fff; border: 1px solid rgba(0,0,0,.10);
  border-radius: 25px; padding: 22px 24px; margin-bottom: 20px;
  box-shadow: 0 3px 6px rgba(0,0,0,.08);
}

/* ===========================
   SECTION 1 — PRINTER
=========================== */
.sel-printer-row { display: flex; align-items: center; gap: 14px; }

.sel-thumb {
  border-radius: 50%; flex-shrink: 0; overflow: hidden;
  border: 2px solid rgba(0,0,0,.10); background: #f7f7f7;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: #9ca3af; text-transform: uppercase;
  font-size: 16px; user-select: none;
}
.sel-thumb-lg { width: 62px; height: 62px; font-size: 19px; }
.sel-thumb-md { width: 44px; height: 44px; font-size: 14px; }
.sel-thumb img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }

.sel-printer-select {
  flex: 1; min-width: 0; padding: 13px 20px; font-size: 15px;
  background: #fff; border: 1px solid rgba(0,0,0,.14); color: #000;
  border-radius: 25px; cursor: pointer; outline: none;
  appearance: auto;
}
.sel-printer-select:focus { border-color: #d10000; box-shadow: 0 0 0 3px rgba(209,0,0,.12); }

/* ===========================
   SECTION 2 — RESINS
=========================== */
.sel-resin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.sel-resin-card {
  background: #f7f7f7; border: 2px solid rgba(0,0,0,.10); border-radius: 16px;
  padding: 14px 16px; cursor: pointer;
  display: flex; align-items: center; gap: 12px;
  transition: border-color .2s, background .2s;
}
.sel-resin-card:hover { border-color: rgba(209,0,0,.3); background: #fff5f5; }
.sel-resin-card.selected { border-color: #d10000; background: #fff5f5; }
.sel-resin-card.selected .sel-thumb { border-color: #d10000; }

.sel-resin-info { flex: 1; min-width: 0; }
.sel-resin-name { font-size: 13px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sel-resin-brand { font-size: 11px; color: #747474; margin-top: 1px; }
.sel-resin-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.sel-resin-tag {
  background: rgba(209,0,0,.08); color: #d10000;
  font-size: 10px; font-weight: 700; padding: 2px 8px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: .05em;
}
.sel-check {
  width: 18px; height: 18px; border: 2px solid rgba(0,0,0,.2);
  border-radius: 50%; flex-shrink: 0; transition: all .2s;
}
.sel-resin-card.selected .sel-check { background: #d10000; border-color: #d10000; }

.sel-inline-warn {
  font-size: 13px; color: #747474; text-align: center; padding: 12px 0;
}

/* ===========================
   SECTION 3 — COLORS
=========================== */
.sel-color-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.sel-swatch {
  width: 38px; height: 38px; border-radius: 50%;
  border: 3px solid transparent; cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,.15);
  transition: border-color .2s, transform .15s;
  padding: 0; appearance: none; -webkit-appearance: none;
}
.sel-swatch:hover { transform: scale(1.1); }
.sel-swatch:focus-visible { outline: 2px solid #d10000; outline-offset: 2px; }
.sel-swatch.selected { border-color: #d10000; }
.sel-color-label { font-size: 12px; color: #747474; }
.sel-color-beige { background-color: #b5a28d; }
.sel-color-gray  { background-color: #aaaaaa; }
.sel-thumb-fallback { background: #e5e7eb; }

/* ===========================
   SECTION 4 — PARAMETERS
=========================== */
.sel-breadcrumb {
  font-size: 12px; color: #747474; margin-bottom: 10px;
  padding: 8px 14px; background: #f7f7f7; border-radius: 25px;
  display: inline-block;
}
.sel-breadcrumb strong { color: #d10000; }

.sel-software-badge {
  display: inline-flex; align-items: center; gap: 7px; margin-bottom: 16px;
  background: #f7f7f7; border: 1px solid rgba(0,0,0,.10);
  border-radius: 999px; padding: 4px 14px;
  font-size: 11px; color: #747474; font-weight: 700;
  text-transform: uppercase; letter-spacing: .05em;
}
.sel-software-badge::before {
  content: ''; display: block; flex-shrink: 0;
  width: 7px; height: 7px; border-radius: 50%;
  background: #22c55e;
  animation: selPulseGreen 1.8s ease-in-out infinite;
}
@keyframes selPulseGreen {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,.55); }
  55%       { box-shadow: 0 0 0 5px rgba(34,197,94,0); }
}
.sel-cura-icon {
  display: inline-block;
  animation: selPulseLamp 2.2s ease-in-out infinite;
}
@keyframes selPulseLamp {
  0%, 100% { transform: scale(1);    filter: brightness(1); }
  45%       { transform: scale(1.25); filter: brightness(1.45); }
}

.sel-param-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px;
}
.sel-param-card {
  background: #f7f7f7; border: 1px solid rgba(0,0,0,.08); border-radius: 16px;
  padding: 16px 18px;
}
.sel-param-label {
  font-size: 10px; color: #9ca3af; text-transform: uppercase;
  letter-spacing: .08em; font-weight: 800; margin-bottom: 6px;
}
.sel-param-value { font-size: 28px; font-weight: 800; color: #000; font-variant-numeric: tabular-nums; }

/* ===========================
   SELECTOR FOOTER
=========================== */
.sel-footer { margin-top: 8px; }
.sel-divider { border: none; border-top: 1px solid rgba(0,0,0,.08); margin: 20px 0; }

.sel-cura-box {
  background: #fff; border: 1px solid rgba(0,0,0,.10);
  border-left: 3px solid #d10000; border-radius: 16px;
  padding: 18px 22px; margin-bottom: 16px;
  box-shadow: 0 2px 4px rgba(0,0,0,.05);
}
.sel-cura-title {
  font-size: 11px; color: #d10000; font-weight: 800;
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px;
}
.sel-cura-list { padding-left: 18px; }
.sel-cura-list li { color: #1C1D1E; font-size: 13px; line-height: 1.75; }

.sel-footer-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.sel-btn-ebook {
  flex: 1; min-width: 180px; padding: 14px 20px; text-align: center;
  background: #fff; border: 1px solid rgba(0,0,0,.14); color: #000;
  border-radius: 999px; font-size: 14px; font-weight: 700; cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,.08); text-decoration: none; display: inline-block;
}
.sel-btn-buy {
  flex: 1; min-width: 180px; padding: 14px 20px; text-align: center;
  background: #d10000; border: none; color: #fff;
  border-radius: 999px; font-size: 14px; font-weight: 800; cursor: pointer;
  box-shadow: 0 8px 20px rgba(209,0,0,.22); text-decoration: none; display: inline-block;
}
.sel-btn-ebook:hover { background: #f7f7f7; }
.sel-btn-buy:hover { background: #b30000; }

/* ===========================
   PDF / SHARE BUTTONS
=========================== */
.sel-lbl-actions {
  margin-left: auto; display: flex; gap: 6px; flex-shrink: 0;
}
.sel-btn-header {
  padding: 3px 11px; font-size: 11px; font-weight: 700;
  background: transparent; border: 1px solid rgba(0,0,0,.15); color: #9ca3af;
  border-radius: 999px; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  white-space: nowrap; line-height: 1.6;
}
.sel-btn-header:hover { background: #f7f7f7; color: #000; border-color: rgba(0,0,0,.28); }

/* ===========================
   TOAST
=========================== */
.sel-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: #1C1D1E; color: #fff; border-radius: 999px;
  padding: 10px 22px; font-size: 13px; font-weight: 600;
  opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .25s;
  z-index: 9999;
}
.sel-toast.show {
  opacity: 1; transform: translateX(-50%) translateY(0);
}

/* ===========================
   PRINT / PDF
=========================== */
@media print {
  @page { size: A4 portrait; margin: 12mm 15mm; }

  /* Hide everything except params + curing tips */
  .prizma-nav,
  .prizma-banner-section,
  .sel-hero,
  .sel-section,
  .sel-footer-btns,
  .sel-lbl-actions,
  .sel-toast,
  #footer-btns,
  .prizma-footer-ig-btn { display: none !important; }

  /* Re-show the two result sections */
  #sec-params,
  #sec-footer { display: block !important; opacity: 1 !important; transform: none !important; }

  body { background: #fff; margin: 0; }

  #sel-app {
    max-width: 100%; padding: 0;
  }
  #sel-app::before {
    content: 'Printing Parameters — Makertech Labs';
    display: block; font-size: 15px; font-weight: 800;
    margin-bottom: 10px; padding-bottom: 8px;
    border-bottom: 2px solid #000;
  }

  /* Compact panel */
  .sel-panel { box-shadow: none; border: 1px solid #e5e7eb; border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; }
  .sel-breadcrumb { font-size: 11px; padding: 5px 10px; margin-bottom: 8px; display: inline-block; }
  .sel-breadcrumb strong { color: #000; }
  .sel-software-badge { border: 1px solid #e5e7eb; margin-bottom: 10px; font-size: 10px; }

  /* 3-column grid to reduce height */
  .sel-param-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .sel-param-card { padding: 10px 12px; border-radius: 10px; }
  .sel-param-label { font-size: 9px; margin-bottom: 4px; }
  .sel-param-value { font-size: 20px; }

  /* Curing tips */
  .sel-divider { margin: 8px 0; }
  .sel-footer { margin-top: 0; }
  .sel-cura-box { border-left: 3px solid #000; padding: 10px 14px; margin-bottom: 0; page-break-inside: avoid; }
  .sel-cura-title { color: #000; font-size: 10px; margin-bottom: 6px; }
  .sel-cura-list li { font-size: 11px; line-height: 1.5; }

  /* Site footer — keep for contact info, strip color */
  .prizma-site-footer { background: #fff; border-top: 1px solid #e5e7eb; padding: 8px 0 4px; page-break-inside: avoid; }
  .prizma-site-footer-inner { gap: 12px; }
  .prizma-footer-logo-img { filter: brightness(0); }
  .prizma-footer-contact-item { color: #333; font-size: 11px; }
  .prizma-footer-contact-item strong { color: #777; }
  .prizma-footer-contact-link { color: #333; }
  .prizma-footer-bottom { color: #aaa; font-size: 10px; margin-top: 4px; padding-top: 4px; }
}

/* ===========================
   HIDDEN SECTIONS / ANIMATION
=========================== */
.sel-section { margin-bottom: 4px; scroll-margin-top: 16px; }
.sel-reveal {
  display: none;
  opacity: 0;
  transform: translateY(14px);
}
.sel-reveal.visible {
  display: block;
  animation: selFadeIn .32s cubic-bezier(.22,1,.36,1) forwards;
}
@keyframes selFadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===========================
   GLOBAL ERROR
=========================== */
.sel-error-msg {
  text-align: center; padding: 24px; color: #747474;
  background: #fff; border-radius: 16px; border: 1px solid rgba(0,0,0,.10);
  margin-top: 20px;
}

/* ===========================
   RESPONSIVE — SELECTOR
=========================== */
@media (max-width: 480px) {
  .sel-param-grid { grid-template-columns: 1fr; }
  .sel-footer-btns { flex-direction: column; }
  .sel-printer-row { gap: 10px; }
  .sel-panel { padding: 16px; }
  .sel-printer-select { padding: 11px 14px; font-size: 14px; }
  .sel-resin-grid { grid-template-columns: 1fr; gap: 6px; }
  .sel-resin-card { padding: 10px 12px; gap: 10px; }
  .sel-thumb-md { width: 36px; height: 36px; font-size: 12px; }
  .sel-resin-name { font-size: 12px; }
  .sel-resin-brand { font-size: 10px; }
  .sel-resin-tag { font-size: 9px; padding: 2px 6px; margin-top: 3px; }
  .sel-check { width: 15px; height: 15px; }
}
@media (max-width: 360px) {
  .sel-lbl-actions { display: none; }
}

/* ===========================
   NAVBAR
=========================== */
.prizma-nav {
  position: sticky; top: 0; z-index: 1000;
  background: #fff;
  border-bottom: 1px solid rgba(0,0,0,.08);
}
.prizma-nav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 0 28px; height: 64px;
  display: flex; align-items: center; gap: 24px;
}
.prizma-nav-logo {
  text-decoration: none; flex-shrink: 0;
  display: flex; align-items: center;
}
.prizma-nav-logo-img { height: 36px; width: auto; display: block; }
.prizma-nav-links {
  display: flex; align-items: center;
  gap: 6px; margin-left: auto;
}
.prizma-nav-link {
  color: #000;
  text-decoration: none; font-size: 14px;
  font-weight: 600; padding: 7px 16px;
  border-radius: 999px;
  transition: color .15s, background .15s;
  white-space: nowrap;
}
.prizma-nav-link:hover { color: #d10000; background: rgba(0,0,0,.05); }
.prizma-nav-cta {
  background: #d10000; color: #fff !important;
  padding: 7px 20px;
  box-shadow: 0 4px 14px rgba(209,0,0,.30);
}
.prizma-nav-cta:hover { background: #b30000 !important; }

/* Hamburger */
.prizma-hamburger {
  display: none; flex-direction: column;
  justify-content: center; gap: 5px;
  width: 38px; height: 38px;
  background: none; border: none;
  cursor: pointer; padding: 5px;
  margin-left: auto; flex-shrink: 0;
}
.prizma-hamburger span {
  display: block; width: 100%; height: 2px;
  background: #000; border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.prizma-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.prizma-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.prizma-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile dropdown */
.prizma-nav-mobile {
  display: none; flex-direction: column;
  background: #fff;
  border-top: 1px solid rgba(0,0,0,.08);
  padding: 8px 28px 16px; gap: 2px;
}
.prizma-nav-mobile.open { display: flex; }
.prizma-nav-mobile-link {
  color: #000;
  text-decoration: none; font-size: 15px;
  font-weight: 600; padding: 13px 0;
  border-bottom: 1px solid rgba(0,0,0,.06);
  transition: color .15s;
}
.prizma-nav-mobile-link:last-child { border-bottom: none; }
.prizma-nav-mobile-link:hover { color: #d10000; }

@media (max-width: 600px) {
  .prizma-nav-links { display: none; }
  .prizma-hamburger { display: flex; }
}

/* ===========================
   BANNER
=========================== */
.prizma-banner-section {
  width: 100%;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a0000 55%, #2d0000 100%);
}
.prizma-banner-wrap {
  width: 100%; position: relative; overflow: hidden;
  aspect-ratio: 1920 / 480;
}
@media (max-width: 600px) {
  .prizma-banner-wrap { aspect-ratio: 1080 / 450; }
}
.prizma-banner-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; display: block;
}

/* ===========================
   SITE FOOTER
=========================== */
.prizma-site-footer {
  background: #0a0a0a;
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 28px 28px 16px;
}
.prizma-site-footer-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: 20px;
}
.prizma-footer-logo-img { height: 28px; width: auto; display: block; }
.prizma-footer-contact {
  display: flex; flex-wrap: wrap;
  gap: 6px 24px; align-items: center;
}
.prizma-footer-contact-item {
  font-size: 13px; font-weight: 600;
  color: rgba(255,255,255,.7);
}
.prizma-footer-contact-item strong {
  color: rgba(255,255,255,.35);
  font-weight: 700; font-size: 10px;
  text-transform: uppercase; letter-spacing: .08em;
  margin-right: 4px;
}
.prizma-footer-ig-btn {
  display: inline-flex; align-items: center;
  gap: 7px; text-decoration: none; color: #fff;
  font-size: 13px; font-weight: 700;
  padding: 8px 16px; border-radius: 999px;
  background: linear-gradient(135deg,#f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);
  transition: opacity .2s, transform .15s;
}
.prizma-footer-ig-btn:hover { opacity: .88; transform: scale(1.02); }
.prizma-footer-ig-icon { width: 16px; height: 16px; flex-shrink: 0; }
.prizma-footer-contact-link { color: inherit; text-decoration: none; }
.prizma-footer-bottom {
  max-width: 960px; margin: 16px auto 0;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.06);
  text-align: center; font-size: 11px;
  color: rgba(255,255,255,.2);
}
@media (max-width: 600px) {
  .prizma-site-footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}