:root{
  --title-color: #fafdff;      /* Titles: courier */
  --para-color: #d7d7dc;       /* Paragraph: Helvetica */
  --accent: #465e73;           /* Accent color */
  --bg: #000000;               /* Solid black base as requested */
  --glass-bg: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.06);
  --panel-gap: 2px;           /* "void" size between sections (small) */
  --header-height: 72px;
  font-family: Helvetica, Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

* { box-sizing: border-box; }
html,body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--para-color);
}

/* subtle animated overlay (slightly darker than accent) so background isn't flat black but still overall black */
body::before{
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(70,94,115,0.02), rgba(0,0,0,0.08));
  mix-blend-mode: screen;
  animation: slowFade 12s ease-in-out infinite alternate;
  z-index: 0;
}
@keyframes slowFade {
  0% { opacity: 0.6; transform: translateY(-8px); }
  100% { opacity: 0.9; transform: translateY(8px); }
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  z-index: 1200;
  backdrop-filter: blur(6px) saturate(120%);
  background: linear-gradient(180deg, rgba(0,0,0,0.6), rgba(0,0,0,0.4));
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.header-left {
  font-family: "Courier New", Courier, monospace;
  color: var(--title-color);
  font-size: 20px;
  letter-spacing: 1px;
}
.header-right {
  display:flex;
  align-items:center;
  gap:10px;
}
.logo { width:40px; height:40px; object-fit:cover; border-radius:6px; }

/* Nav */
.header-nav {
  display:flex;
  gap:12px;
  align-items:center;
}
.header-nav a {
  color: var(--accent);
  text-decoration:none;
  padding:8px 10px;
  border-radius:6px;
  font-weight:600;
  font-size:14px;
  transition: all .16s ease;
}
.header-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.06);
}
.webring-btn {
  display:inline-block;
  padding:6px 10px;
  color:var(--para-color);
  border-radius:6px;
  text-decoration:none;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.04);
  font-size:13px;
}

/* main layout */
main { padding-top: calc(var(--header-height) + 12px); position:relative; z-index:1; }

/* Panels / glass */
.panel {
  min-height: 60vh;
  padding: 48px 18px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.panel .glass {
  
  width: min(1100px, 96%);
  border-radius: 14px;
  padding: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid var(--glass-border);
  box-shadow: 0 6px 30px rgba(0,0,0,0.6);
  backdrop-filter: blur(6px) saturate(120%);
  color: var(--para-color);
}

/* smaller void between sections */
section.panel + section.panel { margin-top: var(--panel-gap); }

/* hero */
.hero { min-height: 100vh; display:flex; align-items:center; justify-content:center; }
.title {
  color: var(--title-color);
  font-family: "Courier New", Courier, monospace;
  font-size: 48px;
  margin: 0 0 16px 0;
  text-align:center;
}
.hero-image {
  display:block;
  max-width: 460px;
  width: 60%;
  height: auto;
  margin: 0 auto 12px auto;
  border-radius: 10px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.7);
}
.lead { color: var(--para-color); font-family: Helvetica, Arial, sans-serif; text-align:center; font-size:18px; }

/* samples */
.sample-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:12px; }
.sample-grid img { width:100%; height:100%; object-fit:cover; border-radius:8px; display:block; }
.sample-grid figcaption { text-align:center; font-size:13px; margin-top:6px; color:var(--para-color); }

/* features */
.section-title {
  color: var(--title-color);
  font-family: "Courier New", Courier, monospace;
  margin:0 0 10px 0;
  font-size:28px;
}
.features-columns { display:flex; gap:24px; flex-wrap:wrap; }
.features-columns > div { flex:1 1 300px; }

/* about */
.btn {
  display:inline-block;
  padding:10px 14px;
  background: var(--accent);
  color: #fff;
  text-decoration:none;
  border-radius:10px;
  border: none;
  cursor: pointer;
  font-weight:600;
}
.btn.ghost { background: transparent; border:1px solid rgba(255,255,255,0.06); color:var(--para-color); }

/* buy / estimate */
.estimate-form { display:flex; flex-direction:column; gap:14px; margin-top:10px; }
.form-row { display:flex; gap:10px; flex-wrap:wrap; }
.form-row label { width:100%; font-size:13px; color:var(--para-color); }
.form-row input, textarea {
  padding:10px;
  border-radius:8px;
  border:1px solid rgba(255,255,255,0.04);
  background: rgba(255,255,255,0.02);
  color:var(--para-color);
  min-width: 180px;
}
.options-container { display:flex; flex-direction:column; gap:12px; }

/* option boxes */
.option-box { background: rgba(0,0,0,0.2); border-radius:10px; padding:12px; border: 1px solid rgba(255,255,255,0.03); }
.option-box h4 { margin:0 0 8px 0; color:var(--title-color); font-family: "Courier New", Courier, monospace; font-size:16px; }
.option-list { display:block; max-height:220px; overflow:auto; padding:6px; border-radius:8px; background: rgba(0,0,0,0.35); }
.option-list.single .optrow, .option-list.multi .optrow {
  display:flex; align-items:center; justify-content:space-between;
  gap:10px; padding:8px; border-radius:6px;
  color:var(--para-color);
}
.optrow input[type="radio"], .optrow input[type="checkbox"]{
  accent-color: var(--accent);
  margin-right:10px;
  background: black;
}
.opt-name { flex:1; text-align:left; font-size:14px; padding-left:6px; }
.opt-price { font-weight:700; font-size:13px; color:var(--para-color); }

/* select-all button */
.select-all {
  display:inline-block; margin-bottom:8px;
  background:transparent; color:var(--para-color);
  border:1px solid rgba(255,255,255,0.04); padding:6px 8px; border-radius:6px;
  cursor:pointer;
}

/* fixed fees area */
.fixed-fees { display:flex; gap:12px; justify-content:flex-start; align-items:center; font-size:14px; color:var(--para-color); margin-top:6px; }
.lead-time { margin-left:18px; color:var(--para-color); }

/* preview area */
.preview-and-total { margin-top:12px; display:flex; flex-direction:column; gap:8px; }
.total { display:flex; justify-content:space-between; align-items:center; font-size:18px; }
.total-value { font-family: "Courier New", Courier, monospace; color:var(--title-color); font-size:20px; }

/* footer */
.site-footer { margin:28px 0 60px 0; display:flex; gap:12px; align-items:center; justify-content:center; color:var(--para-color); }
.small-sample { width:40px; height:40px; object-fit:cover; border-radius:6px; }

.muted { color: rgba(215,215,220,0.6); }
.error { color:#ff6666; }

/* responsiveness */
@media (max-width:900px){
  .sample-grid { grid-template-columns:repeat(2,1fr); }
  .features-columns { flex-direction:column; }
  .hero-image { width: 80%; max-width:360px; }
}
@media (max-width:520px){
  .header-nav { display:none; }
  .site-header { padding:10px 12px; }
  .title { font-size:34px; }
  .panel { padding:26px 12px; }
}