/* OpenxStore — Showroom aesthetic
   Palette:  obsidian #0A0A0B, graphite #15151A, mid-warm #2A2724, cream #F4F1EA, copper #C8643C
   Type:     Bricolage Grotesque (display), Manrope (UI), JetBrains Mono (code)
*/

:root {
  /* light defaults — porcelain */
  --opx-bg: #FFFFFF;
  --opx-bg-2: #F5F5F2;
  --opx-bg-3: #EAEAE5;
  --opx-line: rgba(15,15,16,0.08);
  --opx-line-strong: rgba(15,15,16,0.18);
  --opx-cream: #0F0F10;
  --opx-cream-2: #2E2E32;
  --opx-mute: #76767C;
  --opx-mute-2: #ADADB2;
  --opx-accent: #C8643C;
  --opx-accent-2: #B05429;
  --opx-accent-soft: rgba(200, 100, 60, 0.16);
  --opx-success: #4A8B5A;

  --opx-radius-sm: 4px;
  --opx-radius: 6px;
  --opx-radius-lg: 12px;

  --opx-density-card-pad: 22px;
  --opx-density-card-gap: 20px;

  /* fonts */
  --opx-display: "Bricolage Grotesque", "Inter Tight", system-ui, sans-serif;
  --opx-ui: "Manrope", "Inter", system-ui, sans-serif;
  --opx-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
}

/* ============ LIGHT THEMES — five distinct directions ============ */

/* PORCELAIN — pure, gallery-white. Surgical, premium electronics. */
[data-theme="porcelain"] {
  --opx-bg: #FFFFFF;
  --opx-bg-2: #F5F5F2;
  --opx-bg-3: #EAEAE5;
  --opx-cream: #0F0F10;
  --opx-cream-2: #2E2E32;
  --opx-mute: #76767C;
  --opx-mute-2: #ADADB2;
  --opx-line: rgba(15,15,16,0.08);
  --opx-line-strong: rgba(15,15,16,0.18);
  --opx-accent: #C8643C;
  --opx-accent-2: #A84B25;
  --opx-accent-soft: rgba(200,100,60,0.14);
  --opx-success: #2F7A4A;
}

/* LINEN — warm, paper-like beige. Editorial, artisan feel. */
[data-theme="linen"] {
  --opx-bg: #F4EFE3;
  --opx-bg-2: #EBE3D0;
  --opx-bg-3: #DFD2B6;
  --opx-cream: #20180D;
  --opx-cream-2: #46382A;
  --opx-mute: #80715A;
  --opx-mute-2: #B6A488;
  --opx-line: rgba(32,24,13,0.10);
  --opx-line-strong: rgba(32,24,13,0.22);
  --opx-accent: #B45A2E;
  --opx-accent-2: #944320;
  --opx-accent-soft: rgba(180,90,46,0.16);
  --opx-success: #4F7A3A;
}

/* MINT — soft green-tinted, calming, healthcare/clean tech vibe. */
[data-theme="mint"] {
  --opx-bg: #EEF4EE;
  --opx-bg-2: #DFEBE0;
  --opx-bg-3: #CDDFCF;
  --opx-cream: #102018;
  --opx-cream-2: #2A3F33;
  --opx-mute: #6B7E72;
  --opx-mute-2: #9DAFA1;
  --opx-line: rgba(16,32,24,0.09);
  --opx-line-strong: rgba(16,32,24,0.20);
  --opx-accent: #2F8A6A;
  --opx-accent-2: #1F6A50;
  --opx-accent-soft: rgba(47,138,106,0.16);
  --opx-success: #2F8A6A;
}

/* AZURE — cool sky-blue, optimistic, modern fintech-y light. */
[data-theme="azure"] {
  --opx-bg: #F1F5FB;
  --opx-bg-2: #E2EAF5;
  --opx-bg-3: #CDDAEC;
  --opx-cream: #0F1726;
  --opx-cream-2: #2C3B55;
  --opx-mute: #677694;
  --opx-mute-2: #99A6BE;
  --opx-line: rgba(15,23,38,0.08);
  --opx-line-strong: rgba(15,23,38,0.20);
  --opx-accent: #2A6CD3;
  --opx-accent-2: #1B53AE;
  --opx-accent-soft: rgba(42,108,211,0.14);
  --opx-success: #2A8A55;
}

/* BLUSH — soft rose-cream, warm, hospitality / boutique. */
[data-theme="blush"] {
  --opx-bg: #FBF1EB;
  --opx-bg-2: #F4E0D5;
  --opx-bg-3: #EBCDBC;
  --opx-cream: #2A140C;
  --opx-cream-2: #4F2C20;
  --opx-mute: #8B6557;
  --opx-mute-2: #C09A89;
  --opx-line: rgba(42,20,12,0.10);
  --opx-line-strong: rgba(42,20,12,0.22);
  --opx-accent: #B84A4A;
  --opx-accent-2: #913333;
  --opx-accent-soft: rgba(184,74,74,0.14);
  --opx-success: #5C7A3A;
}

/* DENSITY */
[data-density="tight"]  { --opx-density-card-pad: 14px; --opx-density-card-gap: 12px; }
[data-density="medium"] { --opx-density-card-pad: 22px; --opx-density-card-gap: 20px; }
[data-density="airy"]   { --opx-density-card-pad: 32px; --opx-density-card-gap: 28px; }

/* RESET */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--opx-bg);
  color: var(--opx-cream);
  font-family: var(--opx-ui);
  font-feature-settings: "ss01", "cv01";
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: -0.005em;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

::selection { background: var(--opx-accent); color: var(--opx-bg); }

/* TYPE */
.opx-display { font-family: var(--opx-display); font-weight: 500; letter-spacing: -0.025em; line-height: 1.02; }
.opx-mono    { font-family: var(--opx-mono); font-feature-settings: "tnum"; letter-spacing: 0; }
.opx-eyebrow {
  font-family: var(--opx-mono);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--opx-mute);
}

/* LAYOUT */
.opx-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.opx-container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 768px) {
  .opx-container { padding: 0 20px; }
}

/* HEADER */
.opx-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--opx-bg) 88%, transparent);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border-bottom: 1px solid var(--opx-line);
}
.opx-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 28px;
}
.opx-logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--opx-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.03em;
}
.opx-logo .x {
  color: var(--opx-accent);
  font-weight: 600;
}
.opx-logo small {
  font-family: var(--opx-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--opx-mute);
  margin-left: 2px;
  font-weight: 400;
}

/* Image-based logo (header + footer) */
.opx-logo-img {
  display: inline-flex;
  align-items: center;
  padding: 0;
  text-decoration: none;
}
.opx-logo-img img {
  display: block;
  height: 88px;
  width: auto;
}
.opx-logo-footer img {
  height: 110px;
}
@media (max-width: 1100px) {
  .opx-logo-img img { height: 76px; }
}
@media (max-width: 980px) {
  .opx-logo-img img { height: 64px; }
  .opx-logo-footer img { height: 90px; }
}
@media (max-width: 720px) {
  .opx-logo-img img { height: 56px; }
  .opx-logo-footer img { height: 72px; }
}

.opx-nav {
  display: flex;
  gap: 28px;
  align-items: center;
  flex: 1;
  justify-content: center;
}
.opx-nav a {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--opx-cream);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
.opx-nav a:hover, .opx-nav a.active {
  color: var(--opx-accent);
  border-bottom-color: var(--opx-accent);
}

.opx-header-right { display: flex; align-items: center; gap: 12px; }

.opx-lang {
  display: flex;
  border: 1px solid var(--opx-line-strong);
  border-radius: 100px;
  padding: 2px;
  font-family: var(--opx-mono);
  font-size: 11px;
}
.opx-lang button {
  background: transparent;
  border: 0;
  padding: 4px 10px;
  border-radius: 100px;
  color: var(--opx-mute);
}
.opx-lang button.active { background: var(--opx-cream); color: var(--opx-bg); }

.opx-cart-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--opx-line-strong);
  border-radius: 100px;
  color: var(--opx-cream);
  font-size: 13px;
  transition: border-color .15s, background .15s;
}
.opx-cart-btn:hover { border-color: var(--opx-accent); }
.opx-cart-btn .count {
  background: var(--opx-accent);
  color: var(--opx-bg);
  font-weight: 600;
  border-radius: 100px;
  padding: 0 8px;
  min-width: 22px;
  text-align: center;
  font-size: 12px;
}

/* BUTTONS */
.opx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform .12s ease, background .15s, border-color .15s;
  white-space: nowrap;
}
.opx-btn:active { transform: translateY(1px); }
.opx-btn-primary { background: var(--opx-accent); color: #fff; }
.opx-btn-primary:hover { background: var(--opx-accent-2); }
.opx-btn-ghost {
  background: transparent;
  color: var(--opx-cream);
  border-color: var(--opx-line-strong);
}
.opx-btn-ghost:hover { border-color: var(--opx-cream); }
.opx-btn-cream {
  background: var(--opx-cream);
  color: var(--opx-bg);
}
.opx-btn-cream:hover { background: var(--opx-cream-2); }
.opx-btn-lg { padding: 18px 28px; font-size: 15px; }
.opx-btn-sm { padding: 8px 14px; font-size: 13px; }
.opx-btn-block { width: 100%; }

/* HERO */
.opx-hero {
  position: relative;
  padding: 80px 0 100px;
  border-bottom: 1px solid var(--opx-line);
  overflow: hidden;
}
.opx-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: end;
}
.opx-hero h1 {
  font-family: var(--opx-display);
  font-weight: 500;
  font-size: clamp(48px, 6vw, 92px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  margin: 24px 0 28px;
  text-wrap: balance;
}
.opx-hero h1 em {
  color: var(--opx-accent);
  font-style: italic;
  font-weight: 400;
}
.opx-hero p {
  font-size: 17px;
  line-height: 1.5;
  color: var(--opx-cream-2);
  max-width: 480px;
  margin: 0 0 36px;
}
.opx-hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.opx-hero-visual {
  aspect-ratio: 1 / 1;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
}

@media (max-width: 900px) {
  .opx-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .opx-hero { padding: 48px 0 72px; }
}

/* SECTION */
.opx-section { padding: 80px 0; border-bottom: 1px solid var(--opx-line); }
.opx-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}
.opx-section-head h2 {
  font-family: var(--opx-display);
  font-weight: 500;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 12px 0 0;
  max-width: 720px;
  text-wrap: balance;
}
.opx-section-head p {
  max-width: 420px;
  color: var(--opx-cream-2);
  margin: 0;
  font-size: 15px;
}

/* PRODUCT VISUAL — typographic placeholder */
.opx-pv {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--opx-bg-2);
  border-radius: 4px;
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto auto 1fr;
  padding: 24px;
  cursor: pointer;
  transition: background .2s;
}
.opx-pv::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 50% 110%, rgba(20,18,15,0.04), transparent 60%);
  pointer-events: none;
}
.opx-pv-meta {
  display: flex;
  justify-content: space-between;
  align-items: start;
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--opx-mute);
  position: relative;
}
.opx-pv-tier {
  border: 1px solid var(--opx-line-strong);
  padding: 3px 8px;
  border-radius: 3px;
}
.opx-pv-tier[data-tier="entry"]    { color: var(--opx-cream-2); }
.opx-pv-tier[data-tier="mid"]      { color: #8A6F3E; border-color: #8A6F3E55; }
.opx-pv-tier[data-tier="upper"]    { color: #4A6480; border-color: #4A648055; }
.opx-pv-tier[data-tier="premium"]  { color: var(--opx-accent); border-color: var(--opx-accent); }
.opx-pv-tier[data-tier="software"] { color: var(--opx-accent); border-color: var(--opx-accent); }

.opx-pv-code {
  font-family: var(--opx-display);
  font-size: clamp(36px, 6vw, 72px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--opx-cream);
  position: relative;
  word-break: break-word;
}
.opx-pv-vendor {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--opx-mute);
  position: relative;
}
.opx-pv-cat {
  align-self: end;
  font-family: var(--opx-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--opx-mute);
  position: relative;
}

/* size variants */
.opx-pv-lg .opx-pv-code { font-size: clamp(64px, 9vw, 128px); }
.opx-pv-sm .opx-pv-code { font-size: 32px; }

/* Real product photo variant — overrides typographic placeholder when product.photo is set */
.opx-pv-photo {
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  position: relative;
  overflow: hidden;
}
.opx-pv-photo::before { display: none; }
.opx-pv-photo img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform .3s ease;
}
.opx-card:hover .opx-pv-photo { background: #FFFFFF; }
.opx-card:hover .opx-pv-photo img { transform: scale(1.04); }
.opx-pv-photo-tier {
  position: absolute;
  top: 10px;
  right: 10px;
  font-family: var(--opx-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--opx-line);
  border-radius: 999px;
  background: rgba(255,255,255,0.85);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  color: var(--opx-cream-2);
}
.opx-pv-photo-tier[data-tier="mid"]      { color: #8A6F3E; border-color: #8A6F3E55; }
.opx-pv-photo-tier[data-tier="upper"]    { color: #4A6480; border-color: #4A648055; }
.opx-pv-photo-tier[data-tier="premium"]  { color: var(--opx-accent); border-color: var(--opx-accent); }
.opx-pv-photo-tier[data-tier="software"] { color: var(--opx-accent); border-color: var(--opx-accent); }
.opx-pv-photo.opx-pv-sm img { padding: 4px; }

/* PRODUCT CARD */
.opx-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: transform .2s ease;
}
.opx-card:hover .opx-pv { background: var(--opx-bg-3); }
.opx-card-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 0;
}
.opx-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--opx-mute);
}
.opx-card-name {
  font-family: var(--opx-display);
  font-weight: 500;
  font-size: 19px;
  letter-spacing: -0.018em;
  line-height: 1.18;
  margin: 4px 0 0;
  color: var(--opx-cream);
}
.opx-card-tagline {
  font-size: 13px;
  color: var(--opx-mute);
  line-height: 1.5;
  margin: 4px 0 0;
}
.opx-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}
.opx-card-price-tag {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--opx-mute);
}
.opx-card-add {
  background: transparent;
  border: 1px solid var(--opx-line-strong);
  color: var(--opx-cream);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  transition: background .15s, border-color .15s, color .15s;
}
.opx-card-add:hover { background: var(--opx-accent); border-color: var(--opx-accent); color: #fff; }
.opx-card-add.added { background: var(--opx-success); border-color: var(--opx-success); color: var(--opx-bg); }

/* tight density — looser/condensed treatment */
[data-density="tight"] .opx-card-name { font-size: 16px; }
[data-density="tight"] .opx-card-tagline { display: none; }
[data-density="airy"] .opx-card-name { font-size: 22px; }

/* CARD GRID */
.opx-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--opx-density-card-gap);
}
@media (max-width: 1100px) { .opx-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px)  { .opx-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .opx-grid { grid-template-columns: 1fr; } }

/* CATEGORY SECTIONS — shown only on "All categories" view */
.opx-cat-section { margin-bottom: 56px; }
.opx-cat-section:last-child { margin-bottom: 0; }
.opx-cat-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 8px 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--opx-line);
}
.opx-cat-section-title {
  font-family: var(--opx-display);
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}
.opx-cat-section-count {
  font-family: var(--opx-mono);
  font-size: 12px;
  color: var(--opx-mute);
  letter-spacing: 0.08em;
}
.opx-cat-section-link {
  margin-left: auto;
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--opx-mute);
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 4px;
  cursor: pointer;
}
.opx-cat-section-link:hover { color: var(--opx-cream, currentColor); }

/* BRAND COVERS */
.opx-brand-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--opx-density-card-gap);
}
@media (max-width: 900px) { .opx-brand-grid { grid-template-columns: repeat(2, 1fr); } }

.opx-brand-cover {
  position: relative;
  aspect-ratio: 4 / 5;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.opx-brand-cover:hover { border-color: var(--opx-accent); }
.opx-brand-cover-name {
  font-family: var(--opx-display);
  font-size: clamp(28px, 3.5vw, 56px);
  line-height: 0.92;
  letter-spacing: -0.035em;
  font-weight: 500;
}
.opx-brand-cover-meta {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--opx-mute);
  display: flex;
  justify-content: space-between;
}
.opx-brand-cover-tag {
  font-size: 13px;
  color: var(--opx-cream-2);
  max-width: 220px;
  line-height: 1.4;
}

/* PACKAGE CARDS */
.opx-pkg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--opx-density-card-gap);
}
@media (max-width: 900px) { .opx-pkg-grid { grid-template-columns: 1fr; } }

.opx-pkg {
  position: relative;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-radius: 4px;
  transition: border-color .2s, background .2s;
}
.opx-pkg:hover { border-color: var(--opx-line-strong); }
.opx-pkg-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.opx-pkg-title {
  font-family: var(--opx-display);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.025em;
  font-weight: 500;
}
.opx-pkg-blurb { color: var(--opx-cream-2); font-size: 14px; line-height: 1.5; margin: 0; }

/* YAZILIM section — IPPBX diagram banner + feature list cards */
.opx-yz-banner {
  margin: 8px 0 32px;
  padding: 28px 32px;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 8px;
  display: grid;
  place-items: center;
}
.opx-yz-banner img {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: contain;
}
@media (max-width: 700px) {
  .opx-yz-banner { padding: 16px; }
  .opx-yz-banner img { max-height: 220px; }
}

.opx-yz-features {
  list-style: none;
  margin: 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--opx-line);
  display: grid;
  gap: 10px;
}
.opx-yz-features li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--opx-cream);
}
.opx-yz-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--opx-accent);
  border-radius: 50%;
}

.opx-pkg-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--opx-line);
  padding-top: 20px;
}
.opx-pkg-item {
  display: flex;
  justify-content: space-between;
  font-family: var(--opx-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.opx-pkg-item .v { color: var(--opx-mute); }
.opx-pkg-item .c { color: var(--opx-cream); }

/* TRUST BAR */
.opx-trust {
  border-top: 1px solid var(--opx-line);
  border-bottom: 1px solid var(--opx-line);
  background: var(--opx-bg-2);
}
.opx-trust-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  padding: 22px 0;
  flex-wrap: wrap;
}
.opx-trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--opx-cream-2);
}
.opx-trust-item::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--opx-accent);
  border-radius: 100px;
  display: inline-block;
}

/* CATALOG */
.opx-catalog {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  padding: 40px 0 80px;
}
@media (max-width: 900px) {
  .opx-catalog { grid-template-columns: 1fr; }
}
.opx-side {
  position: sticky;
  top: 92px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 4px;
}
@media (max-width: 900px) {
  .opx-side { display: none; }
  .opx-side.open { display: flex; position: fixed; inset: 0; background: var(--opx-bg); z-index: 60; padding: 24px 20px 100px; max-height: 100vh; overflow-y: auto; }
}
.opx-side-group h4 {
  font-family: var(--opx-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--opx-mute);
  margin: 0 0 12px;
  font-weight: 500;
}
.opx-side-list { display: flex; flex-direction: column; gap: 6px; }
.opx-side-list label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13.5px;
  color: var(--opx-cream-2);
  padding: 4px 6px;
  border-radius: 3px;
  transition: background .12s, color .12s;
}
.opx-side-list label:hover { color: var(--opx-cream); background: var(--opx-bg-2); }
.opx-side-list label.active {
  color: var(--opx-cream);
  background: var(--opx-accent-soft);
}
.opx-side-list label.active .count { color: var(--opx-accent); font-weight: 600; }
.opx-side-list label .count {
  margin-left: auto;
  font-family: var(--opx-mono);
  font-size: 11px;
  color: var(--opx-mute);
}
.opx-side-list label .brand-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Brand list — scroll if long */
.opx-brand-list {
  max-height: 320px;
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
}

/* Brand search input */
.opx-brand-search {
  display: flex;
  align-items: center;
  position: relative;
  margin-bottom: 8px;
}
.opx-brand-search input {
  flex: 1;
  font: inherit;
  font-size: 12.5px;
  padding: 6px 24px 6px 10px;
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  background: var(--opx-bg);
  color: var(--opx-cream);
  outline: none;
  transition: border-color .12s;
}
.opx-brand-search input:focus { border-color: var(--opx-accent); }
.opx-brand-search input::placeholder { color: var(--opx-mute-2); }
.opx-brand-search button {
  position: absolute;
  right: 6px;
  background: transparent;
  border: 0;
  color: var(--opx-mute);
  font-size: 16px;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}
.opx-brand-search button:hover { color: var(--opx-accent); }
.opx-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border: 1px solid var(--opx-line-strong);
  border-radius: 3px;
  background: transparent;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
}
.opx-checkbox:checked {
  background: var(--opx-accent);
  border-color: var(--opx-accent);
}
.opx-checkbox:checked::after {
  content: "";
  position: absolute;
  inset: 2px 3px;
  border-right: 1.5px solid #fff;
  border-bottom: 1.5px solid #fff;
  transform: rotate(40deg);
  width: 4px; height: 7px;
  top: 1px; left: 4px;
}

.opx-chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.opx-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--opx-line-strong);
  border-radius: 100px;
  font-size: 12.5px;
  background: transparent;
  color: var(--opx-cream-2);
  cursor: pointer;
  transition: all .12s;
}
.opx-chip:hover { color: var(--opx-cream); border-color: var(--opx-cream); }
.opx-chip.active { background: var(--opx-accent); border-color: var(--opx-accent); color: #fff; }

.opx-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--opx-line);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.opx-search {
  position: relative;
  flex: 1;
  max-width: 480px;
  min-width: 220px;
}
.opx-search input {
  width: 100%;
  padding: 12px 14px 12px 38px;
  border-radius: 4px;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  color: var(--opx-cream);
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.opx-search input:focus { border-color: var(--opx-accent); }
.opx-search svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--opx-mute); }
.opx-toolbar-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--opx-mute);
}
.opx-select {
  background: transparent;
  border: 1px solid var(--opx-line);
  color: var(--opx-cream);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 13px;
  outline: none;
}

.opx-mobile-filter-btn { display: none; }
@media (max-width: 900px) {
  .opx-mobile-filter-btn { display: inline-flex; }
}

/* PRODUCT DETAIL */
.opx-pd {
  padding: 40px 0 80px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
}
@media (max-width: 900px) { .opx-pd { grid-template-columns: 1fr; gap: 32px; } }

.opx-pd-gallery { display: flex; flex-direction: column; gap: 16px; }
.opx-pd-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.opx-pd-thumb {
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  aspect-ratio: 1/1;
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.opx-pd-thumb.active { border-color: var(--opx-accent); }
.opx-pd-thumb-num {
  font-family: var(--opx-mono);
  font-size: 10px;
  color: var(--opx-mute);
  position: absolute;
  top: 6px;
  left: 8px;
  letter-spacing: 0.1em;
}

.opx-pd-info { display: flex; flex-direction: column; gap: 28px; padding-top: 8px; }
.opx-pd-vendor {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--opx-accent);
}
.opx-pd-name {
  font-family: var(--opx-display);
  font-size: clamp(36px, 4vw, 56px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 12px 0 0;
  font-weight: 500;
  text-wrap: balance;
}
.opx-pd-code {
  font-family: var(--opx-mono);
  font-size: 13px;
  color: var(--opx-mute);
  margin-top: 12px;
}
.opx-pd-tagline {
  color: var(--opx-cream-2);
  font-size: 16px;
  line-height: 1.5;
  max-width: 480px;
}
.opx-pd-keys { display: flex; flex-direction: column; gap: 10px; }
.opx-pd-keys li {
  list-style: none;
  padding-left: 22px;
  position: relative;
  font-size: 14px;
  color: var(--opx-cream);
}
.opx-pd-keys li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 10px; height: 1px;
  background: var(--opx-accent);
}

.opx-pd-buy {
  display: flex;
  gap: 12px;
  align-items: stretch;
  border-top: 1px solid var(--opx-line);
  padding-top: 24px;
}
.opx-stepper {
  display: flex;
  border: 1px solid var(--opx-line-strong);
  border-radius: 100px;
  overflow: hidden;
}
.opx-stepper button {
  background: transparent;
  border: 0;
  width: 44px;
  color: var(--opx-cream);
  font-size: 18px;
}
.opx-stepper button:hover { background: var(--opx-bg-2); }
.opx-stepper input {
  width: 56px;
  text-align: center;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--opx-line);
  border-right: 1px solid var(--opx-line);
  font-family: var(--opx-mono);
  font-size: 14px;
  color: var(--opx-cream);
  outline: none;
}

/* TABS */
.opx-tabs {
  border-top: 1px solid var(--opx-line);
  margin-top: 60px;
  padding-top: 40px;
}
.opx-tab-bar {
  display: flex;
  gap: 32px;
  border-bottom: 1px solid var(--opx-line);
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.opx-tab {
  background: transparent;
  border: 0;
  padding: 12px 0;
  color: var(--opx-mute);
  font-size: 14px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.opx-tab.active { color: var(--opx-cream); border-bottom-color: var(--opx-accent); }
.opx-tab:hover { color: var(--opx-cream); }

.opx-spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  max-width: 760px;
}
.opx-spec-table tr { border-bottom: 1px solid var(--opx-line); }
.opx-spec-table td { padding: 16px 0; vertical-align: top; }
.opx-spec-table td:first-child {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--opx-mute);
  width: 200px;
  padding-right: 32px;
}

/* CART */
.opx-cart-page { padding: 40px 0 80px; }
.opx-cart-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 56px;
  margin-top: 40px;
}
@media (max-width: 900px) { .opx-cart-grid { grid-template-columns: 1fr; } }

.opx-cart-line {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--opx-line);
  align-items: start;
}
.opx-cart-line .pv { aspect-ratio: 1/1; }
.opx-cart-line-info { display: flex; flex-direction: column; gap: 6px; }
.opx-cart-line-name { font-family: var(--opx-display); font-size: 22px; font-weight: 500; line-height: 1.05; letter-spacing: -0.02em; }
.opx-cart-line-meta { font-family: var(--opx-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--opx-mute); }
.opx-cart-line-note {
  margin-top: 10px;
  background: transparent;
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  padding: 8px 12px;
  width: 100%;
  max-width: 480px;
  resize: vertical;
  min-height: 38px;
  font-size: 13px;
  color: var(--opx-cream-2);
  outline: none;
  font-family: inherit;
}
.opx-cart-line-note:focus { border-color: var(--opx-line-strong); color: var(--opx-cream); }
.opx-cart-line-actions { display: flex; flex-direction: column; align-items: end; gap: 12px; }
.opx-cart-line-remove {
  background: transparent;
  border: 0;
  color: var(--opx-mute);
  font-size: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.opx-cart-line-remove:hover { color: var(--opx-accent); }

.opx-cart-summary {
  position: sticky;
  top: 92px;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  padding: 32px;
  align-self: start;
}
.opx-cart-summary h3 {
  font-family: var(--opx-display);
  font-size: 28px;
  letter-spacing: -0.025em;
  margin: 0 0 24px;
  font-weight: 500;
}
.opx-cart-summary .totals {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--opx-line);
  border-bottom: 1px solid var(--opx-line);
  padding: 20px 0;
  margin: 20px 0;
}
.opx-cart-summary .row {
  display: flex;
  justify-content: space-between;
  font-family: var(--opx-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}
.opx-cart-summary .row .label { color: var(--opx-mute); text-transform: uppercase; }
.opx-cart-summary .row .v { color: var(--opx-cream); font-size: 14px; }
.opx-cart-summary p { font-size: 12.5px; color: var(--opx-mute); line-height: 1.5; margin: 0 0 20px; }

.opx-empty {
  text-align: center;
  padding: 80px 20px;
}
.opx-empty h2 { font-family: var(--opx-display); font-size: 56px; letter-spacing: -0.03em; margin: 16px 0; font-weight: 500; }
.opx-empty p { color: var(--opx-mute); margin: 0 0 32px; }

/* QUOTE FORM */
.opx-quote { padding: 40px 0 80px; max-width: 800px; }
.opx-quote-strip {
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  font-size: 13px;
}
.opx-quote-strip .meta { display: flex; gap: 16px; align-items: center; }
.opx-quote h1 {
  font-family: var(--opx-display);
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: -0.03em;
  font-weight: 500;
  line-height: 1;
  margin: 8px 0 12px;
}
.opx-quote .lead { color: var(--opx-cream-2); margin: 0 0 40px; max-width: 540px; }

.opx-form-section {
  border-top: 1px solid var(--opx-line);
  padding: 32px 0;
}
.opx-form-section h3 {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--opx-mute);
  margin: 0 0 20px;
  font-weight: 500;
}
.opx-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
@media (max-width: 600px) { .opx-form-row { grid-template-columns: 1fr; } }
.opx-form-row.full { grid-template-columns: 1fr; }

.opx-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.opx-field label {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--opx-mute);
}
.opx-field label .req { color: var(--opx-accent); }
.opx-field input, .opx-field textarea {
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  padding: 12px 14px;
  color: var(--opx-cream);
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
  font-family: inherit;
}
.opx-field input:focus, .opx-field textarea:focus { border-color: var(--opx-accent); }
.opx-field textarea { min-height: 100px; resize: vertical; }
.opx-field.error input, .opx-field.error textarea { border-color: #B5544D; }

.opx-radio-row, .opx-checks-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.opx-radio-pill, .opx-check-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--opx-line-strong);
  border-radius: 100px;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
  user-select: none;
}
.opx-radio-pill.active, .opx-check-pill.active { background: var(--opx-accent); border-color: var(--opx-accent); color: #fff; }
.opx-radio-pill:hover, .opx-check-pill:hover { border-color: var(--opx-cream); }
.opx-radio-pill.active:hover, .opx-check-pill.active:hover { border-color: var(--opx-accent); }

.opx-kvkk { display: flex; gap: 12px; align-items: start; padding: 24px 0; }
.opx-kvkk label { font-size: 13px; color: var(--opx-cream-2); line-height: 1.5; cursor: pointer; }

/* CONFIRM */
.opx-confirm { padding: 80px 0 120px; text-align: center; }
.opx-tick {
  width: 88px;
  height: 88px;
  border-radius: 100px;
  background: var(--opx-accent);
  margin: 0 auto 32px;
  position: relative;
  animation: opx-tick-in .5s cubic-bezier(.4,1.4,.5,1) both;
}
.opx-tick::after {
  content: "";
  position: absolute;
  left: 28px;
  top: 30px;
  width: 14px;
  height: 28px;
  border-right: 3px solid #fff;
  border-bottom: 3px solid #fff;
  transform: rotate(40deg);
  animation: opx-tick-stroke .35s 0.25s ease both;
  opacity: 0;
}
@keyframes opx-tick-in { from { transform: scale(0.4); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes opx-tick-stroke { to { opacity: 1; } }
.opx-confirm h1 {
  font-family: var(--opx-display);
  font-size: clamp(40px, 5vw, 72px);
  letter-spacing: -0.03em;
  font-weight: 500;
  line-height: 1;
  margin: 0 0 16px;
}
.opx-confirm .ref-label {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--opx-mute);
  margin: 40px 0 8px;
}
.opx-confirm .ref-num {
  font-family: var(--opx-mono);
  font-size: 24px;
  letter-spacing: 0.05em;
  color: var(--opx-accent);
  border: 1px dashed var(--opx-accent);
  display: inline-block;
  padding: 10px 20px;
  border-radius: 4px;
}
.opx-confirm .actions { display: flex; gap: 12px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }

/* DRAWER (cart drawer mode) */
.opx-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  animation: opx-fade .2s;
}
@keyframes opx-fade { from { opacity: 0; } to { opacity: 1; } }
.opx-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 100%;
  max-width: 480px;
  background: var(--opx-bg-2);
  border-left: 1px solid var(--opx-line);
  z-index: 101;
  display: flex;
  flex-direction: column;
  animation: opx-slide-in .25s cubic-bezier(.2,.8,.3,1);
}
@keyframes opx-slide-in { from { transform: translateX(100%); } to { transform: translateX(0); } }

.opx-drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  border-bottom: 1px solid var(--opx-line);
}
.opx-drawer-head h3 { font-family: var(--opx-display); font-size: 24px; font-weight: 500; letter-spacing: -0.02em; margin: 0; }
.opx-drawer-body { flex: 1; overflow-y: auto; padding: 12px 28px; }
.opx-drawer-foot { padding: 20px 28px; border-top: 1px solid var(--opx-line); display: flex; flex-direction: column; gap: 12px; }
.opx-icon-btn {
  background: transparent;
  border: 0;
  width: 36px; height: 36px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.opx-icon-btn:hover { background: var(--opx-bg-3); }

/* MODAL */
.opx-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: opx-fade .2s;
}
.opx-modal {
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 6px;
  width: 100%;
  max-width: 520px;
  padding: 32px;
  animation: opx-pop .2s cubic-bezier(.2,.8,.3,1);
}
@keyframes opx-pop { from { transform: scale(0.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.opx-modal h3 { font-family: var(--opx-display); font-size: 24px; letter-spacing: -0.02em; font-weight: 500; margin: 0 0 8px; }

/* TOAST */
.opx-toast-wrap {
  position: fixed;
  top: 86px;
  right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.opx-toast {
  background: var(--opx-bg-3);
  border: 1px solid var(--opx-line-strong);
  padding: 12px 18px;
  border-radius: 100px;
  font-size: 13px;
  color: var(--opx-cream);
  box-shadow: 0 16px 32px rgba(0,0,0,0.4);
  display: flex;
  gap: 10px;
  align-items: center;
  animation: opx-toast-in .25s cubic-bezier(.2,.8,.3,1);
  pointer-events: all;
}
.opx-toast::before { content: ""; width: 6px; height: 6px; background: var(--opx-success); border-radius: 100px; }
@keyframes opx-toast-in { from { transform: translateY(-12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* FOOTER */
.opx-footer {
  background: var(--opx-bg);
  border-top: 1px solid var(--opx-line);
  padding: 60px 0 28px;
  margin-top: auto;
}
.opx-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}
@media (max-width: 768px) { .opx-footer-grid { grid-template-columns: 1fr 1fr; } }
.opx-footer h4 {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--opx-mute);
  margin: 0 0 16px;
  font-weight: 500;
}
.opx-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.opx-footer li a { font-size: 14px; color: var(--opx-cream-2); }
.opx-footer li a:hover { color: var(--opx-accent); }
.opx-footer-base {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--opx-line);
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--opx-mute);
  flex-wrap: wrap;
  gap: 16px;
}

/* ABOUT / CONTACT */
.opx-page { padding: 80px 0 100px; }
.opx-page h1 { font-family: var(--opx-display); font-size: clamp(48px, 6vw, 96px); letter-spacing: -0.035em; line-height: 1; font-weight: 500; margin: 0 0 32px; max-width: 1100px; text-wrap: balance; }
.opx-page-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; }
@media (max-width: 900px) { .opx-page-grid { grid-template-columns: 1fr; } }
.opx-prose { font-size: 16px; line-height: 1.65; color: var(--opx-cream-2); }
.opx-prose p { margin: 0 0 18px; }
.opx-prose h2 { font-family: var(--opx-display); font-size: 28px; letter-spacing: -0.02em; color: var(--opx-cream); font-weight: 500; margin: 36px 0 12px; }
.opx-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.opx-stat {
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  padding: 28px;
  border-radius: 4px;
}
.opx-stat .n {
  font-family: var(--opx-display);
  font-size: 56px;
  letter-spacing: -0.03em;
  font-weight: 500;
  line-height: 1;
  color: var(--opx-accent);
}
.opx-stat .l {
  font-size: 13px;
  color: var(--opx-mute);
  margin-top: 6px;
}

.opx-contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 40px;
}
@media (max-width: 768px) { .opx-contact-grid { grid-template-columns: 1fr; } }

.opx-contact-card {
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  padding: 32px;
  border-radius: 4px;
}
.opx-contact-card h3 { font-family: var(--opx-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--opx-mute); margin: 0 0 14px; font-weight: 500; }
.opx-contact-card .v { font-family: var(--opx-display); font-size: 24px; letter-spacing: -0.02em; font-weight: 500; }
.opx-contact-card .v small { display: block; font-family: var(--opx-ui); font-size: 13px; color: var(--opx-cream-2); letter-spacing: 0; font-weight: 400; margin-top: 6px; }
a.opx-contact-link { display: block; color: inherit; text-decoration: none; transition: border-color .15s, transform .15s; }
a.opx-contact-link:hover { border-color: var(--opx-accent); transform: translateY(-2px); }
a.opx-contact-link:hover h3 { color: var(--opx-accent); }

/* CONTACT — map with persistent business info card overlay */
.opx-map-wrap {
  position: relative;
  height: 420px;
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  overflow: hidden;
}
.opx-map-card {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  width: 280px;
  max-width: calc(100% - 32px);
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line-strong);
  border-radius: 6px;
  padding: 16px 18px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
  font-family: var(--opx-ui);
  font-size: 13px;
  line-height: 1.5;
  color: var(--opx-cream);
}
.opx-map-card-eyebrow {
  font-family: var(--opx-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--opx-mute);
  margin-bottom: 6px;
}
.opx-map-card-name {
  font-family: var(--opx-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 4px;
}
.opx-map-card-tagline {
  color: var(--opx-cream-2);
  font-size: 12px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--opx-line);
}
.opx-map-card-line { color: var(--opx-cream-2); }
.opx-map-card-hours {
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--opx-mute);
  margin-top: 8px;
}
.opx-map-card-actions {
  display: flex;
  gap: 16px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--opx-line);
}
.opx-map-card-actions a {
  color: var(--opx-accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.01em;
}
.opx-map-card-actions a:hover { text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 560px) {
  .opx-map-wrap { height: 480px; }
  .opx-map-card { width: auto; left: 12px; right: 12px; top: 12px; }
}

/* PRODUCT — Back to category button */
.opx-back-cat {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px 10px 14px;
  margin-bottom: 16px;
  font-family: var(--opx-ui);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: #fff;
  background: var(--opx-accent);
  border: 1px solid var(--opx-accent);
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 2px 0 rgba(0,0,0,0.06);
  transition: transform .15s, box-shadow .15s, background .15s, filter .15s;
}
.opx-back-cat:hover {
  transform: translateX(-2px);
  filter: brightness(1.07);
  box-shadow: 0 3px 0 rgba(0,0,0,0.08);
}
.opx-back-cat:active {
  transform: translateX(0);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}
.opx-back-cat-arrow {
  font-size: 18px;
  line-height: 1;
  transition: transform .2s;
}
.opx-back-cat:hover .opx-back-cat-arrow { transform: translateX(-3px); }

/* SERVICES — tabs */
.opx-svc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 8px;
}
.opx-svc-tab {
  font-family: var(--opx-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.005em;
  padding: 10px 16px;
  background: #D9D5CC;
  color: #4A4A52;
  border: 1px solid #C9C5BC;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, transform .15s;
}
.opx-svc-tab:hover { background: #CFCBC2; border-color: #B8B4AB; transform: translateY(-1px); }
.opx-svc-tab.active {
  background: var(--opx-accent);
  border-color: var(--opx-accent);
  color: #fff;
}
.opx-svc-tab.active:hover { background: var(--opx-accent); border-color: var(--opx-accent); }

/* BULUT SANTRAL — services page */
.opx-bs-toc {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
  margin-top: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--opx-line);
}
.opx-bs-toc-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--opx-line);
  background: var(--opx-bg);
  text-decoration: none;
  color: var(--opx-cream);
  border-radius: 4px;
  transition: border-color .15s, transform .15s;
}
.opx-bs-toc-item:hover { border-color: var(--opx-accent); transform: translateY(-2px); }
.opx-bs-toc-item .num { font-family: var(--opx-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--opx-mute); }
.opx-bs-toc-item .t { font-size: 14px; font-weight: 500; letter-spacing: -0.01em; }

.opx-bs-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 48px;
  padding: 56px 0;
  border-bottom: 1px solid var(--opx-line);
  scroll-margin-top: 100px;
}
@media (max-width: 880px) {
  .opx-bs-section { grid-template-columns: 1fr; gap: 24px; padding: 32px 0; }
}
.opx-bs-section:last-of-type { border-bottom: none; }
.opx-bs-head .opx-eyebrow { color: var(--opx-accent); }

.opx-bs-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.opx-bs-bullets li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--opx-cream);
}
.opx-bs-bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  background: var(--opx-accent);
  border-radius: 50%;
}

.opx-bs-cta {
  margin-top: 56px;
  padding: 28px 32px;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

/* SCROLLBAR (subtle) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--opx-line-strong); border-radius: 100px; border: 2px solid var(--opx-bg); }
::-webkit-scrollbar-thumb:hover { background: var(--opx-mute-2); }

/* mobile filter trigger */
.opx-mobile-filter-trigger {
  display: none;
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  background: var(--opx-cream);
  color: var(--opx-bg);
  padding: 12px 22px;
  border-radius: 100px;
  border: 0;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
}
@media (max-width: 900px) { .opx-mobile-filter-trigger { display: inline-flex; } }

/* ============ CATEGORY TREE (catalog sidebar) ============ */
.opx-tree {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 13.5px;
}

.opx-tree-branch {
  display: flex;
  flex-direction: column;
}

.opx-tree-node {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 8px 9px 4px;
  background: transparent;
  border: 0;
  border-left: 3px solid transparent;
  border-radius: 3px;
  text-align: left;
  width: 100%;
  color: var(--opx-cream-2);
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
  font: inherit;
}
.opx-tree-node:hover {
  background: var(--opx-bg-2);
  color: var(--opx-cream);
}
.opx-tree-active {
  background: var(--opx-accent-soft);
  color: var(--opx-cream);
  border-left-color: var(--opx-accent);
}
.opx-tree-active:hover {
  background: var(--opx-accent-soft);
}

.opx-tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  background: transparent;
  border: 0;
  color: var(--opx-mute);
  padding: 0;
  cursor: pointer;
  font-size: 11px;
  line-height: 1;
}
.opx-tree-toggle-empty {
  width: 18px;
  cursor: default;
}
.opx-tree-chev {
  display: inline-block;
  transition: transform .15s ease, color .15s;
  color: var(--opx-mute);
  font-size: 11px;
}
.opx-tree-toggle:hover .opx-tree-chev {
  color: var(--opx-cream);
}

.opx-tree-label-btn {
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  text-align: left;
  flex: 1;
  font: inherit;
  color: inherit;
  cursor: pointer;
  min-width: 0;
}

.opx-tree-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}
.opx-tree-label-muted {
  color: var(--opx-accent);
  font-style: italic;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.005em;
}
.opx-tree-allin {
  background: rgba(200, 100, 60, 0.06);
  border-left: 2px solid var(--opx-accent);
  margin-left: -2px;
}
.opx-tree-allin:hover .opx-tree-label-muted {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.opx-tree-allin.opx-tree-active {
  background: rgba(200, 100, 60, 0.14);
}
.opx-tree-allin.opx-tree-active .opx-tree-label-muted {
  color: var(--opx-accent);
  font-weight: 700;
}

.opx-tree-count {
  margin-left: auto;
  font-family: var(--opx-mono);
  font-size: 10.5px;
  color: var(--opx-mute);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  padding-left: 6px;
}
.opx-tree-active .opx-tree-count {
  color: var(--opx-accent);
}

.opx-tree-all {
  border-bottom: 1px solid var(--opx-line);
  padding-bottom: 10px;
  margin-bottom: 6px;
  border-radius: 0;
}
.opx-tree-all.opx-tree-active {
  border-bottom-color: var(--opx-line);
}
.opx-tree-all .opx-tree-label {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.005em;
}

/* === TOP-LEVEL PARENT (Telefonlar, Kameralar etc) — bold, prominent === */
.opx-tree-parent .opx-tree-label {
  font-family: var(--opx-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--opx-cream);
}
.opx-tree-parent {
  padding-top: 11px;
  padding-bottom: 11px;
  margin-top: 2px;
}
.opx-tree-parent .opx-tree-count {
  font-size: 11px;
  font-weight: 600;
  color: var(--opx-cream-2);
}
.opx-tree-parent .opx-tree-chev {
  font-size: 13px;
  color: var(--opx-cream-2);
  font-weight: 700;
}
.opx-tree-parent:hover .opx-tree-label {
  color: var(--opx-accent);
}
.opx-tree-parent.opx-tree-active .opx-tree-label {
  color: var(--opx-accent);
}

/* Subtle divider between top-level branches */
.opx-tree-branch:not(.opx-tree-branch-nested) {
  border-bottom: 1px solid var(--opx-line);
}
.opx-tree-branch:not(.opx-tree-branch-nested):last-child {
  border-bottom: 0;
}

.opx-tree-children {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-left: 16px;
  margin: 2px 0 6px;
  animation: opx-tree-expand .18s ease-out;
}
.opx-tree-guide {
  position: absolute;
  left: 11px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: var(--opx-line-strong);
  pointer-events: none;
}

/* === SUB-CATEGORY (children) — lighter, smaller, distinct === */
.opx-tree-child {
  padding-left: 8px;
  padding-top: 6px;
  padding-bottom: 6px;
}
.opx-tree-child .opx-tree-label {
  font-weight: 400;
  font-size: 12.5px;
  color: var(--opx-cream-2);
  letter-spacing: 0;
}
.opx-tree-child:hover .opx-tree-label {
  color: var(--opx-cream);
  font-weight: 500;
}
.opx-tree-child.opx-tree-active .opx-tree-label {
  color: var(--opx-accent);
  font-weight: 600;
}
.opx-tree-child .opx-tree-count {
  font-size: 10px;
  color: var(--opx-mute-2);
}

.opx-tree-allin {
  border-bottom: 1px dashed var(--opx-line);
  padding-bottom: 6px;
  margin-bottom: 2px;
}

/* Brand sub-rows shown under a selected leaf */
.opx-tree-brands {
  margin-top: 4px;
}
.opx-tree-brand-row .opx-tree-label {
  font-size: 12px;
  letter-spacing: 0.01em;
}
.opx-tree-brand-all {
  border-bottom: 1px dashed var(--opx-line);
  padding-bottom: 6px;
  margin-bottom: 2px;
}
.opx-tree-brand-all:hover .opx-tree-label-muted {
  color: var(--opx-cream);
}
.opx-tree-brand-all.opx-tree-active .opx-tree-label-muted {
  color: var(--opx-accent);
  font-weight: 600;
}

/* Nested branches (children-of-children) — slightly tighter spacing */
.opx-tree-branch-nested .opx-tree-children {
  padding-left: 14px;
  margin-top: 1px;
}
.opx-tree-branch-nested .opx-tree-guide {
  background: var(--opx-line);
}
.opx-tree-branch-nested .opx-tree-label {
  font-weight: 400;
}

@keyframes opx-tree-expand {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* breadcrumb above the product grid */
.opx-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-family: var(--opx-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--opx-mute);
  margin-bottom: 16px;
}
.opx-bc-link {
  background: transparent;
  border: 0;
  padding: 0;
  font: inherit;
  color: var(--opx-mute);
  cursor: pointer;
  letter-spacing: inherit;
  text-transform: inherit;
}
.opx-bc-link:hover {
  color: var(--opx-accent);
}
.opx-bc-sep {
  color: var(--opx-mute-2);
}
.opx-bc-current {
  color: var(--opx-cream);
}


/* WhatsApp floating contact button */
.opx-whatsapp-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 40;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35), 0 2px 6px rgba(0,0,0,0.18);
  cursor: pointer;
  transition: transform .18s cubic-bezier(.3,.8,.3,1), box-shadow .18s ease;
  text-decoration: none;
  color: #fff;
  animation: opx-wa-pulse 2.4s ease-in-out infinite;
}
.opx-whatsapp-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5), 0 4px 10px rgba(0,0,0,0.22);
  animation: none;
}
.opx-whatsapp-fab:active { transform: scale(1.02); }
@keyframes opx-wa-pulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35), 0 2px 6px rgba(0,0,0,0.18), 0 0 0 0 rgba(37, 211, 102, 0.4); }
  50%      { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35), 0 2px 6px rgba(0,0,0,0.18), 0 0 0 14px rgba(37, 211, 102, 0); }
}
@media (max-width: 720px) {
  .opx-whatsapp-fab { width: 52px; height: 52px; bottom: 88px; right: 16px; }
  .opx-whatsapp-fab svg { width: 24px; height: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  .opx-whatsapp-fab { animation: none; }
}


/* ============ Global Search ============ */
.opx-search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 7px 10px;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 100px;
  color: var(--opx-mute);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  transition: border-color .12s, color .12s, background .12s;
  cursor: pointer;
}
.opx-search-trigger:hover {
  border-color: var(--opx-accent);
  color: var(--opx-cream);
  background: var(--opx-bg);
}
.opx-search-trigger svg { color: var(--opx-mute); transition: color .12s; }
.opx-search-trigger:hover svg { color: var(--opx-accent); }
.opx-search-trigger-text { white-space: nowrap; }
.opx-search-kbd {
  font-family: var(--opx-mono);
  font-size: 11px;
  background: var(--opx-bg);
  padding: 1px 7px;
  border: 1px solid var(--opx-line-strong);
  border-radius: 4px;
  color: var(--opx-mute);
  margin-left: 2px;
}
@media (max-width: 980px) {
  .opx-search-trigger-text, .opx-search-kbd { display: none; }
  .opx-search-trigger { padding: 7px 10px; }
}

.opx-search-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(15, 15, 16, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 80px 20px 20px;
  animation: opx-search-fade-in .15s ease;
}
@keyframes opx-search-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.opx-search-modal {
  width: 100%;
  max-width: 720px;
  background: var(--opx-bg);
  border: 1px solid var(--opx-line);
  border-radius: 14px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 100px);
  animation: opx-search-pop-in .2s cubic-bezier(.3, .8, .3, 1);
}
@keyframes opx-search-pop-in {
  from { opacity: 0; transform: translateY(-12px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.opx-search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--opx-line);
}
.opx-search-input-wrap > svg { color: var(--opx-mute); flex-shrink: 0; }
.opx-search-input-wrap input {
  flex: 1;
  border: 0;
  background: transparent;
  font-size: 18px;
  font-weight: 500;
  color: var(--opx-cream);
  outline: none;
  font-family: var(--opx-ui);
}
.opx-search-input-wrap input::placeholder { color: var(--opx-mute-2); font-weight: 400; }
.opx-search-clear {
  background: transparent;
  border: 0;
  color: var(--opx-mute);
  font-size: 22px;
  line-height: 1;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
}
.opx-search-clear:hover { background: var(--opx-bg-2); color: var(--opx-cream); }
.opx-search-close {
  background: transparent;
  border: 1px solid var(--opx-line);
  border-radius: 6px;
  padding: 6px 10px;
  font: inherit;
  font-size: 12px;
  color: var(--opx-mute);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  flex-shrink: 0;
}
.opx-search-close kbd {
  font-family: var(--opx-mono);
  font-size: 10px;
  background: var(--opx-bg-2);
  padding: 1px 6px;
  border-radius: 3px;
}
.opx-search-meta {
  padding: 8px 18px;
  font-size: 12px;
  color: var(--opx-mute);
  border-bottom: 1px solid var(--opx-line);
}
.opx-search-hint { padding: 4px 0; }
.opx-search-count {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--opx-mono);
  letter-spacing: 0.05em;
}
.opx-search-tip { color: var(--opx-mute-2); font-size: 11px; }
.opx-search-results {
  overflow-y: auto;
  flex: 1;
  padding: 8px;
}
.opx-search-empty {
  padding: 32px 16px;
  text-align: center;
  color: var(--opx-mute);
  font-size: 14px;
}
.opx-search-empty em { color: var(--opx-cream); font-style: normal; font-weight: 600; }
.opx-search-result {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 10px 12px;
  background: transparent;
  border: 0;
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  transition: background .1s;
}
.opx-search-result:hover, .opx-search-result.active {
  background: var(--opx-accent-soft);
}
.opx-search-thumb {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: #fff;
  border: 1px solid var(--opx-line);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.opx-search-thumb img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.opx-search-thumb-fallback {
  font-family: var(--opx-mono);
  font-weight: 700;
  font-size: 16px;
  color: var(--opx-mute);
}
.opx-search-info { flex: 1; min-width: 0; }
.opx-search-vendor {
  font-family: var(--opx-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--opx-mute);
}
.opx-search-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--opx-cream);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.opx-search-code {
  font-family: var(--opx-mono);
  font-size: 11px;
  color: var(--opx-accent);
  margin-top: 2px;
}
.opx-search-result.active .opx-search-arrow,
.opx-search-result:hover .opx-search-arrow { color: var(--opx-accent); transform: translateX(4px); }
.opx-search-arrow {
  color: var(--opx-mute-2);
  font-size: 18px;
  transition: transform .15s, color .15s;
  flex-shrink: 0;
}
@media (max-width: 600px) {
  .opx-search-overlay { padding: 0; align-items: stretch; }
  .opx-search-modal { max-height: 100%; border-radius: 0; max-width: 100%; }
}

/* Product card quantity stepper (next to "Add to cart") */
.opx-card-stepper {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--opx-line);
  border-radius: 4px;
  overflow: hidden;
  background: var(--opx-bg);
  height: 32px;
  flex-shrink: 0;
}
.opx-card-stepper button {
  width: 26px;
  border: 0;
  background: transparent;
  color: var(--opx-cream);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  padding: 0;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.opx-card-stepper button:hover:not(:disabled) {
  background: var(--opx-accent-soft);
  color: var(--opx-accent);
}
.opx-card-stepper button:disabled {
  color: var(--opx-mute-2);
  cursor: not-allowed;
}
.opx-card-stepper input {
  width: 32px;
  border: 0;
  background: transparent;
  text-align: center;
  font-family: var(--opx-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--opx-cream);
  padding: 0;
  outline: none;
  border-left: 1px solid var(--opx-line);
  border-right: 1px solid var(--opx-line);
  -moz-appearance: textfield;
}
.opx-card-stepper input::-webkit-inner-spin-button,
.opx-card-stepper input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.opx-card-stepper input:focus { background: var(--opx-bg-2); }

/* Card foot adjustment to fit stepper + button */
.opx-card-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.opx-card-foot .opx-card-add { flex: 1; min-width: 90px; }

/* Santral configurator (IP & Hibrit) — line/extension counters */
.opx-cfg-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 12px 0 14px;
  padding: 10px 12px;
  background: var(--opx-bg-2);
  border: 1px solid var(--opx-line);
  border-radius: 4px;
}
.opx-cfg-grid-cart { margin: 14px 0 4px; max-width: 420px; }

.opx-cfg-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.opx-cfg-label {
  font-size: 12px;
  color: var(--opx-cream);
  font-weight: 500;
  letter-spacing: -0.005em;
}
.opx-cfg-step {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--opx-line);
  border-radius: 3px;
  background: var(--opx-bg);
  height: 26px;
  overflow: hidden;
}
.opx-cfg-step button {
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--opx-cream);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  font-weight: 500;
  transition: background .12s;
}
.opx-cfg-step button:hover:not(:disabled) { background: var(--opx-bg-2); }
.opx-cfg-step button:disabled { opacity: 0.3; cursor: not-allowed; }
.opx-cfg-step input {
  width: 38px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--opx-cream);
  text-align: center;
  font-family: var(--opx-mono);
  font-size: 12px;
  outline: none;
  -moz-appearance: textfield;
}
.opx-cfg-step input::-webkit-inner-spin-button,
.opx-cfg-step input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Brand portfolio logo wall (home page) */
.opx-brand-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1px;
  background: var(--opx-line);
  border: 1px solid var(--opx-line);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 24px;
}
.opx-brand-tile {
  background: #FFFFFF;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
  position: relative;
}
.opx-brand-tile:hover {
  background: var(--opx-bg-2);
}
.opx-brand-tile img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(0.65);
  opacity: 0.75;
  transition: filter .25s ease, opacity .25s ease, transform .25s ease;
  mix-blend-mode: multiply;
}
.opx-brand-tile:hover img {
  filter: grayscale(0);
  opacity: 1;
  transform: scale(1.06);
}
.opx-brand-tile-fallback {
  font-family: var(--opx-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--opx-cream-2);
  text-transform: uppercase;
}
@media (max-width: 720px) {
  .opx-brand-wall { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .opx-brand-tile { height: 90px; padding: 14px; }
}