/* GS3Dforge – retro/synthwave vizuál dle dodaných návrhů */
:root {
  --bg: #07070f;
  --bg2: #0d0d1c;
  --panel: #10101f;
  --pink: #ff2bd6;
  --magenta: #ff4fa3;
  --cyan: #19d9ff;
  --green: #9dff1e;
  --text: #e8e8f2;
  --muted: #8a8aa5;
  --border: #262643;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Rajdhani", sans-serif;
  font-size: 17px;
  line-height: 1.5;
}
h1, h2, h3, legend, .logo { font-family: "Orbitron", sans-serif; }
a { color: var(--cyan); text-decoration: none; }
.muted { color: var(--muted); font-size: .9em; }
.green { color: var(--green); }

/* ---------- header ---------- */
.site-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 5vw; position: sticky; top: 0; z-index: 50;
  background: rgba(7,7,15,.88); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.logo { font-size: 26px; font-weight: 900; color: #fff; letter-spacing: 1px; position: relative; }
.logo-3d { color: var(--green); text-shadow: 0 0 12px rgba(157,255,30,.6); }
.logo-forge { color: var(--pink); font-style: italic; text-shadow: 0 0 12px rgba(255,43,214,.6); }
.logo small {
  display: block; font-family: "Rajdhani"; font-size: 10px; letter-spacing: 3px;
  text-transform: uppercase; color: var(--muted); font-weight: 600;
}
.logo small b { color: var(--green); }
.site-header nav a {
  margin-left: 22px; color: var(--text); font-weight: 600; font-size: 15px;
  text-transform: uppercase; letter-spacing: 1px;
}
.site-header nav a:hover { color: var(--pink); }
.lang-switch { margin-left: 22px; }
.lang-switch button {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  font-family: "Rajdhani"; font-weight: 700; font-size: 13px; padding: 4px 9px; cursor: pointer;
}
.lang-switch button:first-child { border-radius: 5px 0 0 5px; }
.lang-switch button:last-child { border-radius: 0 5px 5px 0; border-left: 0; }
.lang-switch button.active { color: var(--green); border-color: var(--green); }

/* hamburger – skrytý na desktopu, viditelný na mobilu (viz @media níže) */
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span {
  display: block; width: 26px; height: 3px; margin: 5px 0; border-radius: 2px;
  background: var(--text); transition: transform .2s, opacity .2s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(7,7,15,.98); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border); padding: 6px 5vw 16px;
  }
  .site-nav.open { display: flex; }
  .site-header nav a {
    margin: 0; padding: 14px 2px; font-size: 16px;
    border-bottom: 1px solid var(--border);
  }
  .lang-switch { margin: 14px 0 0; align-self: flex-start; }
  .lang-switch button { font-size: 15px; padding: 7px 16px; }
}

/* ---------- hero ---------- */
.hero { position: relative; text-align: center; padding: 90px 5vw 110px; overflow: hidden; }
.hero-grid {
  position: absolute; inset: auto 0 0 0; height: 45%;
  background:
    linear-gradient(transparent, rgba(255,43,214,.14)),
    repeating-linear-gradient(90deg, rgba(255,43,214,.25) 0 1px, transparent 1px 60px),
    repeating-linear-gradient(0deg, rgba(255,43,214,.25) 0 1px, transparent 1px 34px);
  transform: perspective(300px) rotateX(55deg) scale(1.6);
  transform-origin: bottom; pointer-events: none;
}
.hero h1 { line-height: 1.05; margin-bottom: 22px; }
.hero-logo { display: block; width: 100%; max-width: 640px; height: auto; margin: 0 auto; }
.neon-pink {
  color: var(--pink);
  text-shadow: 0 0 8px rgba(255,43,214,.9), 0 0 32px rgba(255,43,214,.5);
}
.hero-text { max-width: 720px; margin: 0 auto 34px; color: #c9c9dd; font-size: 19px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; border: 0; cursor: pointer; font-family: "Rajdhani";
  font-weight: 700; font-size: 17px; letter-spacing: 1px; text-transform: uppercase;
  padding: 13px 30px; border-radius: 6px; transition: filter .15s, transform .15s;
}
.btn-primary {
  background: linear-gradient(180deg, #c4ff4d, var(--green));
  color: #102000;
  box-shadow: 0 0 18px rgba(157,255,30,.45);
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--cyan); border: 1px solid var(--cyan); }
.btn-big { width: 100%; padding: 16px; font-size: 19px; margin-top: 14px; }
.btn:disabled { filter: grayscale(.8); cursor: wait; }

/* ---------- sekce obecně ---------- */
section { padding: 70px 5vw; }
section h2 {
  text-align: center; font-size: clamp(24px, 3.4vw, 38px); margin-bottom: 34px;
  color: #fff; text-transform: uppercase; letter-spacing: 2px;
}
.section-text { max-width: 700px; margin: -14px auto 30px; text-align: center; color: #c9c9dd; }

/* ---------- how it works ---------- */
.how { background: var(--bg2); border-block: 1px solid var(--border); }
.steps { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; list-style: none; }
.steps li {
  flex: 1 1 170px; max-width: 210px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 10px; padding: 20px 16px; text-align: center;
}
.steps li .num {
  display: inline-block; font-family: "Orbitron"; font-weight: 700; color: var(--cyan);
  border: 1px solid var(--cyan); border-radius: 50%; width: 40px; height: 40px; line-height: 38px;
  margin-bottom: 10px; box-shadow: 0 0 12px rgba(25,217,255,.35) inset;
}
.steps li b { display: block; margin-bottom: 4px; color: #fff; }
.steps li { color: var(--muted); font-size: 15px; }
.steps li .step-text { display: block; }

/* ---------- konfigurátor ---------- */
.configurator { background: radial-gradient(ellipse at top, #14142a 0%, var(--bg) 65%); }
.dropzone {
  max-width: 720px; margin: 0 auto; text-align: center; padding: 48px 24px;
  border: 2px dashed var(--pink); border-radius: 14px; background: rgba(255,43,214,.04);
  cursor: pointer; transition: background .15s, border-color .15s;
}
.dropzone.dragover { background: rgba(25,217,255,.08); border-color: var(--cyan); }
.dropzone-icon { font-size: 46px; color: var(--green); margin-bottom: 8px; }
.dropzone p { margin-bottom: 8px; }
.dropzone .btn { margin-top: 12px; }
.upload-status { text-align: center; margin-top: 16px; color: var(--cyan); }
.upload-status.error { color: #ff5d5d; }

.config-panel { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(340px, 1.2fr); gap: 34px; margin-top: 40px; }
@media (max-width: 900px) { .config-panel { grid-template-columns: 1fr; } }

.viewer {
  height: 340px; border: 1px solid var(--border); border-radius: 10px;
  background: linear-gradient(180deg, #0c0c1a, #12122a); overflow: hidden;
}
.model-info { margin: 12px 0; font-size: 15px; color: var(--muted); }
.model-info b { color: var(--text); }
.validation { border-radius: 8px; padding: 12px 14px; font-size: 15px; margin-bottom: 12px; }
.validation.ok { border: 1px solid var(--green); color: var(--green); background: rgba(157,255,30,.06); }
.validation.warn { border: 1px solid #ffb02b; color: #ffb02b; background: rgba(255,176,43,.06); }
.validation ul { margin: 6px 0 0 18px; }

fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 18px; background: var(--panel); }
legend { padding: 0 10px; font-size: 15px; color: var(--cyan); text-transform: uppercase; letter-spacing: 1px; }
legend small { color: var(--muted); text-transform: none; }

.option-sublabel {
  margin: 14px 0 8px; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px;
}
.option-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.option-grid label {
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; cursor: pointer;
  font-size: 15px; transition: border-color .12s, box-shadow .12s;
}
.option-grid label:has(input:checked) {
  border-color: var(--green); box-shadow: 0 0 12px rgba(157,255,30,.25);
}
.option-grid input { margin-right: 6px; accent-color: var(--green); }
.option-grid b { display: block; color: #fff; }
.option-grid small { color: var(--muted); display: block; }

.row { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 10px; font-weight: 600; }
.row input, .row select {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 10px; font-family: inherit; font-size: 16px; min-width: 130px;
}
.check { display: block; margin: 8px 0; cursor: pointer; }
.check input { accent-color: var(--green); margin-right: 8px; }
.check em { color: var(--muted); font-style: normal; font-size: .9em; }

.cart-list { margin: 14px 0; display: flex; flex-direction: column; gap: 8px; }
.cart-item {
  display: flex; align-items: center; gap: 10px; border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px; font-size: 14px; flex-wrap: wrap;
}
.cart-item.active { border-color: var(--green); box-shadow: 0 0 10px rgba(157,255,30,.2); }
.cart-item-select {
  background: transparent; border: 0; color: #fff; font-weight: 700; cursor: pointer;
  font-family: inherit; font-size: 14px; padding: 0; text-align: left;
}
.cart-item-meta { color: var(--muted); flex: 1 1 160px; }
.cart-item-price { color: var(--magenta); font-weight: 600; white-space: nowrap; }
.cart-item-remove {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  border-radius: 6px; width: 24px; height: 24px; cursor: pointer; font-size: 14px; line-height: 1;
}
.cart-item-remove:hover { border-color: #ff5d5d; color: #ff5d5d; }

.price-box {
  border: 1px solid var(--pink); border-radius: 12px; padding: 18px;
  background: rgba(255,43,214,.05); box-shadow: 0 0 24px rgba(255,43,214,.15);
  margin-bottom: 22px;
}
.price-table { width: 100%; border-collapse: collapse; font-size: 16px; }
.price-table td { padding: 4px 0; }
.price-table td:last-child { text-align: right; font-weight: 600; }
.price-total {
  border-top: 1px solid var(--border); margin-top: 10px; padding-top: 12px;
  font-family: "Orbitron"; font-size: 22px; color: #fff; display: flex; justify-content: space-between; align-items: baseline;
}
.price-total span { color: var(--green); text-shadow: 0 0 12px rgba(157,255,30,.5); }
.price-total small { font-family: "Rajdhani"; color: var(--muted); font-size: 13px; }

#order-form h3 { margin: 8px 0 12px; color: #fff; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; }
.form-grid label { display: flex; flex-direction: column; font-size: 14px; color: var(--muted); }
.form-grid .full { grid-column: 1 / -1; }
.form-grid input, .form-grid textarea {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 9px 10px; font-family: inherit; font-size: 16px; margin-top: 3px;
}
.form-grid input:focus, .form-grid textarea:focus { outline: 1px solid var(--cyan); }
#form-status.error { color: #ff5d5d; }
#form-status.ok { color: var(--green); font-size: 1.05em; }
#shipping-error.error { color: #ff5d5d; }
.option-grid label.unavailable { opacity: .45; pointer-events: none; }
.option-grid .carrier-price { float: right; font-weight: 600; }
.narrow-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 30%)); }

.loading-row { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; margin: 4px 0; }
.spinner {
  width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--green);
  border-radius: 50%; animation: gs3d-spin .7s linear infinite; flex: 0 0 auto;
}
@keyframes gs3d-spin { to { transform: rotate(360deg); } }

/* ---------- kvalita / porovnání ---------- */
.quality { background: var(--bg2); border-block: 1px solid var(--border); }
.compare { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-bottom: 26px; }
.compare figure { text-align: center; }
.compare .ph {
  width: 280px; height: 190px; border-radius: 10px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; font-family: "Orbitron"; font-size: 26px;
}
.compare .ph small { font-family: "Rajdhani"; font-size: 14px; margin-top: 6px; opacity: .8; }
.ph-fdm { background: repeating-linear-gradient(0deg, #2a2a3c 0 6px, #222234 6px 12px); color: #9a9ab2; }
.ph-resin {
  background: linear-gradient(145deg, #1b2b34, #14323e); color: var(--cyan);
  box-shadow: 0 0 22px rgba(25,217,255,.25);
}
.compare figcaption { margin-top: 8px; color: var(--muted); font-size: 15px; }
.features { list-style: none; display: flex; flex-wrap: wrap; gap: 12px 30px; justify-content: center; color: #d5d5e8; }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--border); padding: 14px 4px; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 18px; color: #fff; }
.faq summary:hover { color: var(--cyan); }
.faq p { margin-top: 8px; color: var(--muted); }

/* ---------- footer ---------- */
.site-footer { background: #05050b; border-top: 1px solid var(--border); padding: 44px 5vw 24px; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; max-width: 1000px; margin: 0 auto 26px; }
.logo-footer { font-family: "Orbitron"; font-size: 22px; font-weight: 900; color: #fff; }
.copyright { text-align: center; color: var(--muted); font-size: 14px; border-top: 1px solid var(--border); padding-top: 18px; }

/* ---------- thank you ---------- */
.thankyou { min-height: 60vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.thankyou h1 { font-size: clamp(28px, 5vw, 52px); margin-bottom: 18px; }
.bank-transfer-card {
  display: flex; gap: 20px; align-items: flex-start; text-align: left;
  border: 1px solid var(--border); border-radius: 10px; background: var(--panel);
  padding: 18px 20px; margin-top: 24px; max-width: 480px; width: 100%;
}
.bank-transfer-card img { border-radius: 6px; background: #fff; padding: 6px; flex: none; }
.bank-transfer-card dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; font-size: 14px; margin: 0; min-width: 0; }
.bank-transfer-card dt { color: var(--muted); }
.bank-transfer-card dd { margin: 0; color: var(--text); word-break: break-all; }
.bank-transfer-card dd.amount { color: var(--green); font-weight: 700; }

/* ---------- legal pages (terms/privacy/returns/delivery-payment) ---------- */
.legal { max-width: 760px; margin: 0 auto; }
.legal h1 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 6px; }
.legal h2 { font-size: 22px; margin: 34px 0 10px; color: #fff; }
.legal h2:first-of-type { margin-top: 0; }
.legal p { margin-bottom: 14px; color: #c9c9dd; }
.legal a { text-decoration: underline; }

/* ---------- obecná mobilní vylepšení ---------- */
@media (max-width: 560px) {
  body { font-size: 16px; }
  section { padding: 48px 5vw; }
  .hero { padding: 60px 5vw 80px; }
  .form-grid { grid-template-columns: 1fr; }   /* formulář do jednoho sloupce */
  .config-panel { gap: 22px; }
  .price-total { font-size: 19px; }
  .compare .ph { width: 100%; max-width: 320px; }
}