/* ============================================================
   NEXUS ONE — Pro Series  ·  style.css
   DecodeLabs Project 3  |  Premium SPA
   Dark / Light dual-theme system via CSS custom properties
   ============================================================ */

/* ─── 1. DESIGN TOKENS — DARK THEME (default) ─────────────── */
:root,
[data-theme="dark"] {
  /* Background layers */
  --bg-void:      #050508;
  --bg-base:      #0b0b10;
  --bg-surface:   #101016;
  --bg-raised:    #161620;
  --bg-overlay:   #1e1e2c;

  /* Borders */
  --bdr-dim:      rgba(255,255,255,0.06);
  --bdr-soft:     rgba(255,255,255,0.10);
  --bdr-bright:   rgba(249,115,22,0.55);

  /* Typography */
  --tx-primary:   #f0f0f8;
  --tx-secondary: #8a8a9e;
  --tx-muted:     #44445a;
  --tx-accent:    #f97316;

  /* Accent — orange/amber fire palette */
  --acc:          #f97316;
  --acc-hover:    #fb923c;
  --acc-glow:     rgba(249,115,22,0.30);
  --acc-glow-sm:  rgba(249,115,22,0.12);

  /* Product dynamic accent (JS-controlled) */
  --prod-accent:  #f97316;

  /* Device screen */
  --screen-bg:    #060610;
  --screen-line:  rgba(249,115,22,0.25);
  --screen-bar:   rgba(249,115,22,0.55);

  /* Card shadow */
  --shadow-card:  0 24px 64px rgba(0,0,0,0.6), 0 0 0 1px var(--bdr-dim);
}

/* ─── 2. DESIGN TOKENS — LIGHT THEME ──────────────────────── */
[data-theme="light"] {
  --bg-void:      #f5f5f0;
  --bg-base:      #ffffff;
  --bg-surface:   #fafaf8;
  --bg-raised:    #f0f0ea;
  --bg-overlay:   #e8e8e0;

  --bdr-dim:      rgba(0,0,0,0.07);
  --bdr-soft:     rgba(0,0,0,0.12);
  --bdr-bright:   rgba(99,102,241,0.55);

  --tx-primary:   #111118;
  --tx-secondary: #555568;
  --tx-muted:     #9999b0;
  --tx-accent:    #6366f1;

  --acc:          #6366f1;
  --acc-hover:    #818cf8;
  --acc-glow:     rgba(99,102,241,0.22);
  --acc-glow-sm:  rgba(99,102,241,0.08);

  --prod-accent:  #6366f1;

  --screen-bg:    #0d0d18;
  --screen-line:  rgba(99,102,241,0.30);
  --screen-bar:   rgba(99,102,241,0.6);

  --shadow-card:  0 12px 40px rgba(0,0,0,0.10), 0 0 0 1px var(--bdr-dim);
}

/* ─── 3. TYPOGRAPHY & SCALE ────────────────────────────────── */
:root {
  --font-display: 'Syne', sans-serif;
  --font-mono:    'DM Mono', monospace;
  --font-serif:   'Fraunces', serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --ease-out: cubic-bezier(0.16,1,0.3,1);
  --dur-fast: 150ms;
  --dur-mid:  280ms;
  --dur-slow: 500ms;
}

/* ─── 4. RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  background: var(--bg-void);
  color: var(--tx-primary);
  font-family: var(--font-display);
  transition: background var(--dur-slow) var(--ease-out),
              color var(--dur-slow) var(--ease-out);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; font: inherit; border: none; background: none; }
fieldset { border: none; }
ul { list-style: none; }

/* ─── 5. ANNOUNCEMENT BAR ──────────────────────────────────── */
.announcement-bar {
  background: linear-gradient(90deg, var(--acc) 0%, #ea580c 100%);
  padding: 7px 0;
  overflow: hidden;
}
[data-theme="light"] .announcement-bar {
  background: linear-gradient(90deg, #6366f1 0%, #7c3aed 100%);
}
.marquee-track { display: flex; }
.marquee-content {
  display: inline-block;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.92);
  padding-right: 4rem;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ─── 6. NAVIGATION HEADER ─────────────────────────────────── */
.nav-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(5,5,8,0.82);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--bdr-dim);
  transition: background var(--dur-slow);
}
[data-theme="light"] .nav-header {
  background: rgba(255,255,255,0.88);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 2.5rem;
  height: 64px;
}

/* Brand */
.nav-brand { display: flex; align-items: baseline; gap: 7px; }
.brand-glyph {
  color: var(--acc);
  font-size: 0.85rem;
  animation: glyph-pulse 3s ease-in-out infinite;
}
@keyframes glyph-pulse {
  0%,100% { opacity:1; } 50% { opacity:0.35; }
}
.brand-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.2em;
  color: var(--tx-primary);
  transition: color var(--dur-mid);
}
.brand-wordmark em {
  font-style: normal;
  color: var(--acc);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  padding: 2px 6px;
  border: 1px solid rgba(249,115,22,0.35);
  border-radius: 3px;
  margin-left: 3px;
}
[data-theme="light"] .brand-wordmark em {
  border-color: rgba(99,102,241,0.35);
}

/* Nav center links */
.nav-center { display: flex; gap: 2rem; }
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-secondary);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--dur-fast);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--acc);
  transition: width var(--dur-mid) var(--ease-out);
}
.nav-link:hover { color: var(--tx-primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--tx-primary); }
.nav-link.active::after { width: 100%; }

/* Right controls */
.nav-controls { display: flex; align-items: center; gap: 14px; }

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  border: 1px solid var(--bdr-soft);
  border-radius: 50px;
  background: var(--bg-raised);
  transition: all var(--dur-mid) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--acc); box-shadow: 0 0 16px var(--acc-glow-sm); }
.theme-track {
  width: 36px; height: 20px;
  background: var(--bg-overlay);
  border-radius: 50px;
  border: 1px solid var(--bdr-soft);
  position: relative;
  flex-shrink: 0;
  transition: background var(--dur-mid);
}
[data-theme="light"] .theme-track { background: var(--acc); }
.theme-thumb {
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  background: var(--tx-secondary);
  border-radius: 50%;
  transition: transform var(--dur-mid) var(--ease-out), background var(--dur-mid);
  display: flex; align-items: center; justify-content: center;
}
[data-theme="light"] .theme-thumb {
  transform: translateX(16px);
  background: #fff;
}
.icon-dark, .icon-light {
  position: absolute;
  font-size: 0.6rem;
  line-height: 1;
  color: var(--tx-primary);
  transition: opacity var(--dur-mid);
}
.icon-dark { opacity: 1; }
.icon-light { opacity: 0; }
[data-theme="light"] .icon-dark { opacity: 0; }
[data-theme="light"] .icon-light { opacity: 1; }
.theme-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--tx-secondary);
}

/* Cart button */
.cart-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-raised);
  border: 1px solid var(--bdr-soft);
  border-radius: var(--radius-lg);
  padding: 8px 14px 8px 10px;
  position: relative;
  transition: all var(--dur-mid) var(--ease-out);
  color: var(--tx-primary);
}
.cart-btn:hover {
  border-color: var(--acc);
  box-shadow: 0 0 20px var(--acc-glow-sm);
}
.cart-svg { width: 17px; height: 17px; color: var(--tx-secondary); transition: color var(--dur-fast); }
.cart-btn:hover .cart-svg { color: var(--acc); }
.cart-count {
  position: absolute;
  top: -7px; right: -7px;
  min-width: 20px; height: 20px;
  background: var(--acc);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--bg-void);
  transition: transform var(--dur-fast);
}
.cart-count.bump { animation: count-bump 0.4s var(--ease-out); }
@keyframes count-bump {
  0% { transform: scale(1); }
  40% { transform: scale(1.55); }
  70% { transform: scale(0.9); }
  100% { transform: scale(1); }
}
.cart-word {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--tx-secondary);
  letter-spacing: 0.06em;
}

/* ─── 7. TOAST NOTIFICATION ────────────────────────────────── */
.toast-wrap {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 9999;
  transition: transform var(--dur-mid) var(--ease-out), opacity var(--dur-mid);
  opacity: 0;
  pointer-events: none;
  width: 90%;
  max-width: 500px;
}
.toast-wrap.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: all;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-overlay);
  border: 1px solid var(--bdr-bright);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 30px var(--acc-glow);
}
.toast-glyph { color: var(--acc); font-size: 0.85rem; flex-shrink: 0; animation: glyph-pulse 2s ease-in-out infinite; }
.toast-msg {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--tx-primary);
  letter-spacing: 0.04em;
  line-height: 1.5;
}
.toast-close {
  color: var(--tx-muted);
  font-size: 0.75rem;
  padding: 4px;
  transition: color var(--dur-fast);
}
.toast-close:hover { color: var(--tx-primary); }

/* ─── 8. HERO SECTION ──────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 7rem 2.5rem 5rem;
}

/* Background layers */
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--bdr-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--bdr-dim) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 70%);
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(249,115,22,0.18) 0%, transparent 70%);
  top: -100px; right: -100px;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.08) 0%, transparent 70%);
  bottom: 0; left: -80px;
}
[data-theme="light"] .orb-1 {
  background: radial-gradient(circle, rgba(99,102,241,0.14) 0%, transparent 70%);
}
[data-theme="light"] .orb-2 {
  background: radial-gradient(circle, rgba(99,102,241,0.07) 0%, transparent 70%);
}

/* Orbit system */
.orbit-system {
  position: absolute;
  top: 50%; right: 8%;
  transform: translateY(-50%);
  width: 300px; height: 300px;
  display: flex; align-items: center; justify-content: center;
}
.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--bdr-dim);
}
.orbit-a { width: 300px; height: 300px; animation: orbit-spin 20s linear infinite; }
.orbit-b { width: 200px; height: 200px; animation: orbit-spin 14s linear infinite reverse; }
.orbit-c { width: 110px; height: 110px; animation: orbit-spin 8s linear infinite; }
@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.orbit-dot {
  width: 10px; height: 10px;
  background: var(--acc);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--acc-glow);
  animation: glyph-pulse 2s ease-in-out infinite;
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  animation: fade-up 0.8s var(--ease-out) 0.1s both;
}
@keyframes fade-up {
  from { opacity:0; transform: translateY(24px); }
  to   { opacity:1; transform: translateY(0); }
}
.hero-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--acc);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.kicker-line {
  display: inline-block;
  width: 32px; height: 1px;
  background: var(--acc);
  flex-shrink: 0;
}
.hero-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--tx-primary);
}
.hero-headline .hl-1 { display: block; }
.hero-headline .hl-2 {
  display: block;
  animation: fade-up 0.8s var(--ease-out) 0.25s both;
}
.hero-headline em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--acc);
}
.hero-body {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--tx-secondary);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 2.5rem;
  animation: fade-up 0.8s var(--ease-out) 0.35s both;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  animation: fade-up 0.8s var(--ease-out) 0.45s both;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--acc);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  transition: all var(--dur-mid) var(--ease-out);
  box-shadow: 0 4px 28px var(--acc-glow);
}
.btn-primary:hover {
  background: var(--acc-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 40px var(--acc-glow);
}
.btn-arrow { font-size: 1rem; transition: transform var(--dur-mid); }
.btn-primary:hover .btn-arrow { transform: translateX(4px); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-secondary);
  border-bottom: 1px solid var(--bdr-soft);
  padding-bottom: 2px;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.btn-ghost:hover { color: var(--tx-primary); border-color: var(--acc); }

/* Hero stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  animation: fade-up 0.8s var(--ease-out) 0.55s both;
}
.hstat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0 2rem 0 0;
}
.hstat:first-child { padding-left: 0; }
.hstat-val {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--tx-primary);
  letter-spacing: -0.02em;
}
.hstat-key {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--tx-muted);
  text-transform: uppercase;
  margin-top: 2px;
}
.hstat-divider {
  width: 1px; height: 36px;
  background: var(--bdr-soft);
  margin-right: 2rem;
  flex-shrink: 0;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
}
.scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, transparent, var(--acc));
  animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%,100% { opacity:0.3; transform: scaleY(1); }
  50%      { opacity:1;   transform: scaleY(1.1); }
}
.scroll-text {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: var(--tx-muted);
  text-transform: uppercase;
}

/* ─── 9. SECTION SHARED STYLES ─────────────────────────────── */
.section { padding: 7rem 2.5rem; max-width: 1380px; margin: 0 auto; }
.section-head {
  text-align: center;
  margin-bottom: 5rem;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--acc);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.kicker-num {
  font-weight: 500;
  padding: 2px 8px;
  border: 1px solid rgba(249,115,22,0.3);
  border-radius: 4px;
  font-size: 0.6rem;
}
[data-theme="light"] .kicker-num { border-color: rgba(99,102,241,0.3); }
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--tx-primary);
  margin-bottom: 1.5rem;
}
.section-title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--acc);
}
.section-body {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--tx-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── 10. CONFIGURATOR SECTION ─────────────────────────────── */
.configurator-section {
  padding: 7rem 2.5rem;
  max-width: 1380px;
  margin: 0 auto;
}
.config-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

/* Showcase Panel */
.showcase-panel { position: sticky; top: 80px; }
.showcase-card {
  background: var(--bg-surface);
  border: 1px solid var(--bdr-dim);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: background var(--dur-slow), border-color var(--dur-slow), box-shadow var(--dur-slow);
}
.showcase-badges {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.tier-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--bg-raised);
  border: 1px solid var(--bdr-soft);
  border-radius: 4px;
  padding: 4px 10px;
  color: var(--tx-secondary);
  transition: all var(--dur-mid);
}
.tier-badge.pro {
  background: rgba(249,115,22,0.1);
  border-color: var(--acc);
  color: var(--acc);
}
[data-theme="light"] .tier-badge.pro {
  background: rgba(99,102,241,0.1);
}
.stock-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: #22c55e;
  letter-spacing: 0.08em;
}
.stock-pulse {
  display: inline-block;
  width: 7px; height: 7px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse-green 2s ease-in-out infinite;
}
@keyframes pulse-green {
  0%,100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
  50%      { box-shadow: 0 0 0 5px rgba(34,197,94,0); }
}

/* Device display */
.device-wrap {
  position: relative;
  margin-bottom: 1.5rem;
}
.device-screen {
  background: var(--screen-bg);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border: 2px solid var(--bdr-soft);
  border-bottom: none;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  transition: border-color var(--dur-slow);
}
.scanlines {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 2px,
    rgba(255,255,255,0.012) 2px, rgba(255,255,255,0.012) 4px
  );
  pointer-events: none; z-index: 2;
}
.screen-ui {
  position: absolute; inset: 0;
  padding: 12px;
  display: flex; flex-direction: column; gap: 8px;
}
.screen-header-row {
  display: flex; align-items: center; gap: 6px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--screen-line);
}
.dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.dot-r { background: #ef4444; }
.dot-y { background: #eab308; }
.dot-g { background: #22c55e; }
.screen-url {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--acc);
  letter-spacing: 0.06em;
  margin-left: 4px;
  transition: color var(--dur-mid);
}
.screen-body { display: flex; flex-direction: column; gap: 6px; padding-top: 4px; }
.screen-line {
  height: 4px; border-radius: 2px;
  background: var(--screen-line);
}
.sl-a { width: 65%; }
.sl-b { width: 48%; }
.sl-c { width: 72%; }
.screen-bars {
  display: flex; align-items: flex-end; gap: 5px;
  height: 36px; padding: 4px 0;
}
.sbar {
  flex: 1; border-radius: 2px 2px 0 0;
  background: var(--acc);
  opacity: 0.55;
  transition: background var(--dur-mid), height var(--dur-mid);
}
.sbar:nth-child(1) { height: 50%; }
.sbar:nth-child(2) { height: 75%; opacity: 0.7; }
.sbar:nth-child(3) { height: 90%; opacity: 0.85; }
.sbar:nth-child(4) { height: 60%; opacity: 0.6; }
.sbar:nth-child(5) { height: 100%; opacity: 1; }
.screen-chip {
  align-self: flex-end;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--acc);
  border: 1px solid var(--acc);
  border-radius: 3px;
  padding: 2px 7px;
  opacity: 0.75;
  transition: color var(--dur-mid), border-color var(--dur-mid);
}
.device-glow {
  position: absolute;
  bottom: 38px; left: 50%;
  transform: translateX(-50%);
  width: 70%; height: 12px;
  background: var(--prod-accent);
  filter: blur(18px);
  opacity: 0.35;
  border-radius: 50%;
  transition: background var(--dur-slow);
}
.device-base {
  background: var(--bg-raised);
  border: 2px solid var(--bdr-soft);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: 12px 16px 10px;
  transition: background var(--dur-slow);
}
.device-kbd { display: flex; flex-direction: column; gap: 4px; }
.kbd-row { display: flex; gap: 4px; }
.k {
  flex: 1; height: 10px;
  background: var(--bg-overlay);
  border: 1px solid var(--bdr-dim);
  border-radius: 2px;
  transition: background var(--dur-slow);
}
.k-wide { flex: 2; }
.k-space { flex: 5; }

/* Color meta */
.color-meta {
  display: flex; align-items: center; justify-content: space-between;
  border-top: 1px solid var(--bdr-dim);
  padding: 1rem 0;
  margin-bottom: 1rem;
}
.color-meta-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tx-muted);
}
.color-meta-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--acc);
  transition: color var(--dur-mid);
}

/* Spec grid */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 8px;
}
.spec-cell {
  background: var(--bg-raised);
  border: 1px solid var(--bdr-dim);
  border-radius: var(--radius-sm);
  padding: 10px 8px 8px;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  transition: background var(--dur-slow), border-color var(--dur-mid);
}
.spec-cell:hover { border-color: var(--bdr-soft); }
.spec-val {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--tx-primary);
  transition: color var(--dur-mid);
}
.spec-key {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-muted);
}

/* Config Panel */
.config-panel {
  padding-left: 2rem;
  border-left: 1px solid var(--bdr-dim);
}
.product-ident { padding-bottom: 1.5rem; }
.product-collection {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  color: var(--acc);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.product-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--tx-primary);
  margin-bottom: 1.25rem;
}
.product-name em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--acc);
}
.price-live { display: flex; align-items: baseline; gap: 4px; }
.price-sym {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--tx-secondary);
}
.price-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3rem;
  letter-spacing: -0.03em;
  color: var(--tx-primary);
  transition: all var(--dur-mid) var(--ease-out);
  line-height: 1;
}
.price-num.flash { animation: price-drop 0.45s var(--ease-out); }
@keyframes price-drop {
  0%  { transform: translateY(-10px); opacity:0; }
  60% { transform: translateY(2px); }
  100%{ transform: translateY(0); opacity:1; }
}
.price-per {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--tx-muted);
  margin-left: 4px;
}
.c-divider {
  border: none;
  border-top: 1px solid var(--bdr-dim);
  margin: 1.75rem 0;
}

/* Config phases */
.config-phase { margin-bottom: 0.25rem; }
.phase-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tx-muted);
  margin-bottom: 1.25rem;
}
.phase-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--acc);
  border: 1px solid rgba(249,115,22,0.25);
  border-radius: 4px;
  padding: 2px 7px;
}
[data-theme="light"] .phase-num { border-color: rgba(99,102,241,0.25); }

/* Edition grid */
.edition-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 1rem; }
.edition-card {
  background: var(--bg-raised);
  border: 1px solid var(--bdr-soft);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem;
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  text-align: left;
  transition: all var(--dur-mid) var(--ease-out);
}
.edition-card:hover { border-color: var(--acc); }
.edition-card.active {
  border-color: var(--acc);
  background: rgba(249,115,22,0.06);
  box-shadow: 0 0 0 1px var(--acc) inset, 0 0 28px var(--acc-glow-sm);
}
[data-theme="light"] .edition-card.active {
  background: rgba(99,102,241,0.06);
  box-shadow: 0 0 0 1px var(--acc) inset, 0 0 28px var(--acc-glow-sm);
}
.ec-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--tx-primary);
}
.pro-glyph { color: var(--acc); }
.ec-price {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--tx-secondary);
}
.edition-card.active .ec-price { color: var(--acc); }
.ec-features {
  list-style: none;
  margin-top: 4px;
  display: flex; flex-direction: column; gap: 3px;
}
.ec-features li {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--tx-muted);
  letter-spacing: 0.04em;
}
.edition-card.active .ec-features li { color: var(--tx-secondary); }
.edition-desc {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  color: var(--tx-muted);
  line-height: 1.6;
  font-style: italic;
  transition: color var(--dur-mid);
}

/* Colorway grid */
.colorway-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.color-card {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-raised);
  border: 1px solid var(--bdr-soft);
  border-radius: var(--radius-md);
  padding: 11px 13px;
  transition: all var(--dur-mid) var(--ease-out);
  text-align: left;
}
.color-card:hover { border-color: var(--acc); }
.color-card.active {
  border-color: var(--acc);
  background: rgba(249,115,22,0.05);
  box-shadow: 0 0 0 1px var(--acc) inset;
}
[data-theme="light"] .color-card.active {
  background: rgba(99,102,241,0.05);
}
.color-dot {
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.12);
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.35);
  transition: transform var(--dur-fast) var(--ease-out);
}
.color-card:hover .color-dot { transform: scale(1.12); }
.color-card.active .color-dot { border-color: rgba(255,255,255,0.35); }
.color-card-name {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--tx-secondary);
  letter-spacing: 0.04em;
  transition: color var(--dur-fast);
}
.color-card.active .color-card-name { color: var(--tx-primary); }

/* Quantity & Order */
.order-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.qty-ctrl {
  display: flex; align-items: center;
  background: var(--bg-raised);
  border: 1px solid var(--bdr-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
}
.qty-btn {
  width: 44px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 600;
  color: var(--tx-secondary);
  transition: all var(--dur-fast) var(--ease-out);
}
.qty-btn:hover { background: var(--bg-overlay); color: var(--tx-primary); }
.qty-btn:active { transform: scale(0.88); }
.qty-num {
  min-width: 44px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.1rem;
  color: var(--tx-primary);
  border-left: 1px solid var(--bdr-dim);
  border-right: 1px solid var(--bdr-dim);
  transition: transform var(--dur-fast);
}
.qty-num.bump { animation: qty-pop 0.25s var(--ease-out); }
@keyframes qty-pop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.35); }
  100% { transform: scale(1); }
}
.add-btn {
  flex: 1; height: 52px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--acc);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700; font-size: 0.85rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: #fff;
  position: relative; overflow: hidden;
  transition: all var(--dur-mid) var(--ease-out);
  box-shadow: 0 4px 24px var(--acc-glow);
}
.add-btn::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, transparent 55%);
  opacity: 0; transition: opacity var(--dur-fast);
}
.add-btn:hover { background: var(--acc-hover); transform: translateY(-1px); box-shadow: 0 8px 36px var(--acc-glow); }
.add-btn:hover::before { opacity: 1; }
.add-btn:active { transform: translateY(0) scale(0.98); }
.add-btn-label { flex: 1; text-align: center; }
.add-btn-total {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: rgba(255,255,255,0.18);
  border-radius: 4px;
  padding: 3px 8px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.stock-note {
  display: flex; align-items: center; gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.63rem;
  color: var(--tx-muted);
  letter-spacing: 0.06em;
}
.stock-pulse-sm {
  width: 6px; height: 6px;
  background: #22c55e;
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse-green 2s ease-in-out infinite;
}

/* ─── 11. ABOUT SECTION ────────────────────────────────────── */
.about-section { background: var(--bg-base); transition: background var(--dur-slow); }
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.about-card {
  background: var(--bg-surface);
  border: 1px solid var(--bdr-dim);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex; flex-direction: column; gap: 1rem;
  transition: all var(--dur-mid) var(--ease-out);
}
.about-card:hover {
  border-color: var(--bdr-soft);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
}
.about-icon {
  font-size: 1.5rem;
  color: var(--acc);
  line-height: 1;
}
.about-card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--tx-primary);
  letter-spacing: -0.01em;
}
.about-card-body {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--tx-secondary);
  line-height: 1.7;
  flex: 1;
}
.about-tag {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--acc);
  border: 1px solid rgba(249,115,22,0.2);
  border-radius: 4px;
  padding: 3px 9px;
  align-self: flex-start;
}
[data-theme="light"] .about-tag { border-color: rgba(99,102,241,0.2); }

/* ─── 12. STUDIO SECTION ───────────────────────────────────── */
.studio-section { background: var(--bg-void); transition: background var(--dur-slow); }
.studio-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
.studio-panel {
  background: var(--bg-surface);
  border: 1px solid var(--bdr-dim);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: background var(--dur-slow), border-color var(--dur-slow);
}
.studio-panel-title {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--tx-primary);
  margin-bottom: 1.75rem;
  letter-spacing: -0.01em;
}
.sp-glyph { color: var(--acc); font-size: 1.1rem; }

/* Feature toggles */
.feature-list { display: flex; flex-direction: column; gap: 0; }
.feature-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--bdr-dim);
}
.feature-row:last-child { border-bottom: none; }
.feat-info { display: flex; flex-direction: column; gap: 2px; }
.feat-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--tx-primary);
}
.feat-desc {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--tx-muted);
  letter-spacing: 0.04em;
}
.feat-toggle {
  width: 44px; height: 24px;
  background: var(--bg-overlay);
  border: 1px solid var(--bdr-soft);
  border-radius: 50px;
  position: relative;
  transition: all var(--dur-mid) var(--ease-out);
  flex-shrink: 0;
}
.feat-toggle.active {
  background: var(--acc);
  border-color: var(--acc);
  box-shadow: 0 0 12px var(--acc-glow);
}
.feat-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  background: var(--tx-secondary);
  border-radius: 50%;
  transition: transform var(--dur-mid) var(--ease-out), background var(--dur-mid);
}
.feat-toggle.active .feat-thumb {
  transform: translateX(20px);
  background: #fff;
}
.active-count-note {
  display: flex; align-items: center; gap: 8px;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--bdr-dim);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--tx-secondary);
  letter-spacing: 0.06em;
}
.count-glyph { color: var(--acc); }

/* Metrics accordion */
.metrics-list { display: flex; flex-direction: column; gap: 4px; }
.metric-item {
  background: var(--bg-raised);
  border: 1px solid var(--bdr-dim);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--dur-mid);
}
.metric-item[open] { border-color: var(--acc); }
.metric-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--dur-fast);
}
.metric-summary:hover { background: var(--bg-overlay); }
.metric-summary::-webkit-details-marker { display: none; }
.metric-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--tx-primary);
}
.metric-chevron {
  color: var(--tx-muted);
  font-size: 0.8rem;
  transition: transform var(--dur-mid) var(--ease-out);
}
.metric-item[open] .metric-chevron { transform: rotate(180deg); color: var(--acc); }
.metric-body { padding: 0 16px 16px; }
.metric-bar-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.metric-bar {
  flex: 1; height: 6px;
  background: var(--bg-overlay);
  border-radius: 50px;
  overflow: hidden;
}
.metric-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--acc), var(--acc-hover));
  border-radius: 50px;
  animation: bar-grow 0.6s var(--ease-out) both;
}
@keyframes bar-grow {
  from { width: 0 !important; }
}
.metric-pct {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--acc);
  min-width: 36px;
  text-align: right;
}
.metric-note {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--tx-muted);
  line-height: 1.6;
  letter-spacing: 0.04em;
}

/* ─── 13. FOOTER ───────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--bdr-dim);
  background: var(--bg-void);
  padding: 2.5rem 2.5rem;
  transition: background var(--dur-slow), border-color var(--dur-slow);
}
.footer-inner {
  max-width: 1380px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1.5rem;
}
.footer-brand { display: flex; align-items: center; gap: 6px; }
.footer-center { text-align: center; }
.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--tx-muted);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.footer-attr {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: rgba(249,115,22,0.45);
  letter-spacing: 0.06em;
}
[data-theme="light"] .footer-attr { color: rgba(99,102,241,0.45); }
.ipo-badge {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--bdr-soft);
  border-radius: 50px;
  padding: 7px 16px;
  background: var(--bg-raised);
}
.ipo-w {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-secondary);
}
.ipo-g {
  color: var(--acc);
  font-size: 0.55rem;
  animation: glyph-pulse 2.5s ease-in-out infinite;
}

/* ─── 14. RESPONSIVE ───────────────────────────────────────── */
@media (max-width: 1100px) {
  .about-grid { grid-template-columns: repeat(2,1fr); }
  .studio-workspace { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .config-workspace { grid-template-columns: 1fr; }
  .showcase-panel { position: static; }
  .config-panel { padding-left: 0; border-left: none; border-top: 1px solid var(--bdr-dim); padding-top: 2rem; }
  .orbit-system { display: none; }
}
@media (max-width: 700px) {
  .nav-center { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .hero-headline { font-size: 2.6rem; }
  .section { padding: 5rem 1.5rem; }
  .configurator-section { padding: 5rem 1.5rem; }
  .footer-inner { flex-direction: column; align-items: center; text-align: center; }
  .spec-grid { grid-template-columns: repeat(2,1fr); }
  .edition-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .nav-inner { padding: 0 1.25rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .order-row { flex-direction: column; }
  .add-btn { width: 100%; }
}