/* Arsen's AI Hardware Store v2 — Dark-first, tier-colored, fully themeable */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── THEME TOKENS ─────────────────────────────────────────────────────────── */
:root {
  --bg:           #ffffff;
  --bg2:          #f5f5f7;
  --bg3:          #e8e8ed;
  --elevated:     #ffffff;
  --text:         #1d1d1f;
  --text2:        #5c5c61;
  --text3:        #696971;
  --accent:       #0071e3;
  --accent-rgb:   0,113,227;
  --accent-glow:  rgba(0,113,227,0.12);
  --green:        #30d158;
  --green-rgb:    48,209,88;
  --orange:       #ff9f0a;
  --red:          #ff453a;
  --border:       rgba(0,0,0,0.08);
  --border2:      rgba(0,0,0,0.14);
  --shadow-sm:    0 2px 14px rgba(0,0,0,0.06);
  --shadow-md:    0 6px 32px rgba(0,0,0,0.10);
  --shadow-lg:    0 16px 60px rgba(0,0,0,0.14);
  --card:         #ffffff;
  --nav-bg:       rgba(255,255,255,0.84);
  --r:            16px;
  --r-sm:         10px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "Menlo", "Monaco", monospace;
}

[data-theme="dark"] {
  --bg:           #0a0a0f;
  --bg2:          #111118;
  --bg3:          #1c1c26;
  --elevated:     #1c1c26;
  --text:         #f0f0f5;
  --text2:        #b0b0b6;
  --text3:        #8c8c92;
  --accent:       #2997ff;
  --accent-rgb:   41,151,255;
  --accent-glow:  rgba(41,151,255,0.12);
  --border:       rgba(255,255,255,0.08);
  --border2:      rgba(255,255,255,0.14);
  --shadow-sm:    0 2px 14px rgba(0,0,0,0.30);
  --shadow-md:    0 6px 32px rgba(0,0,0,0.44);
  --shadow-lg:    0 16px 60px rgba(0,0,0,0.60);
  --card:         #1c1c26;
  --nav-bg:       rgba(10,10,15,0.88);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

/* ─── NAVIGATION ────────────────────────────────────────────────────────────── */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 200;
  height: 54px;
  background: var(--nav-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  transition: background 0.25s;
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 28px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { font-size: 0.9rem; font-weight: 700; color: var(--text); text-decoration: none; letter-spacing: -0.01em; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 0.78rem; color: var(--text); text-decoration: none;
  opacity: 0.65; transition: opacity 0.15s;
}
.nav-links a:hover, .nav-links a.active { opacity: 1; }
.nav-hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 32px; height: 32px;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
  flex-shrink: 0; border-radius: 6px; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 18px; height: 1.5px;
  background: var(--text); border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.15s ease;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile {
  position: fixed; top: 54px; left: 0; right: 0;
  background: var(--nav-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  z-index: 198;
  padding: 8px 28px 16px;
  display: none; flex-direction: column;
  transition: background 0.25s;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: 13px 0; font-size: 0.9rem;
  color: var(--text); text-decoration: none;
  border-bottom: 1px solid var(--border);
  opacity: 0.75; transition: opacity 0.15s;
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover, .nav-mobile a.active { opacity: 1; }

.theme-toggle {
  width: 34px; height: 20px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 10px;
  cursor: pointer; position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}
.theme-toggle::after {
  content: '';
  position: absolute; left: 2px; top: 2px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--text2);
  transition: transform 0.2s, background 0.2s;
}
[data-theme="dark"] .theme-toggle::after { transform: translateX(14px); background: var(--accent); }
[data-theme="dark"] .theme-toggle { background: var(--bg3); }

/* ─── HERO ──────────────────────────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  background: #060610;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.13) 1px, transparent 1px);
  background-size: 34px 34px;
  animation: gridBreath 8s ease-in-out infinite;
  will-change: opacity;
}
@keyframes gridBreath {
  0%,100% { opacity: 0.5; }
  50% { opacity: 0.9; }
}
.hero-glow {
  position: absolute;
  width: 800px; height: 600px;
  top: -200px; left: 50%; transform: translateX(-50%);
  background: radial-gradient(ellipse at center,
    rgba(41,151,255,0.08) 0%,
    rgba(41,151,255,0.03) 40%,
    transparent 70%);
  pointer-events: none;
  animation: glowPulse 6s ease-in-out infinite;
}
@keyframes glowPulse {
  0%,100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: 960px; margin: 0 auto;
  padding: 120px 28px 100px;
  text-align: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(41,151,255,0.9);
  background: rgba(41,151,255,0.1);
  border: 1px solid rgba(41,151,255,0.25);
  padding: 6px 14px; border-radius: 980px;
  margin-bottom: 28px;
}
.hero-eyebrow::before { content: '●'; font-size: 0.5em; animation: blink 2s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

.hero-title {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.04em;
  color: #f5f5f7;
  margin-bottom: 24px;
}
.hero-title-accent {
  background: linear-gradient(135deg, #2997ff 0%, #30d158 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.1rem; color: rgba(245,245,247,0.58); line-height: 1.7;
  max-width: 560px; margin: 0 auto 48px;
}
.hero-stats {
  display: flex; justify-content: center; align-items: center;
  gap: 0; margin-bottom: 52px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r);
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(10px);
  overflow: hidden;
  max-width: 580px; margin: 0 auto 52px;
}
.hero-stat {
  flex: 1; padding: 22px 24px; text-align: center;
}
.hero-stat + .hero-stat { border-left: 1px solid rgba(255,255,255,0.1); }
.hero-stat-num {
  font-size: 1.9rem; font-weight: 800; letter-spacing: -0.04em;
  color: #f5f5f7; line-height: 1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.hero-stat-label { font-size: 0.72rem; color: rgba(245,245,247,0.45); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-scroll {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.scroll-label { font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.3); }
.scroll-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,0.3);
  animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(6px)} }

/* ─── BUTTONS ───────────────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--text); color: var(--bg);
  padding: 13px 26px; border-radius: 980px;
  font-size: 0.88rem; font-weight: 600;
  text-decoration: none; border: none; cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  letter-spacing: -0.01em;
}
.btn-primary:hover { opacity: 0.82; transform: scale(1.02); }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.82);
  padding: 13px 26px; border-radius: 980px;
  font-size: 0.88rem; font-weight: 500;
  text-decoration: none; border: 1px solid rgba(255,255,255,0.15);
  transition: background 0.15s, border-color 0.15s;
}
.btn-ghost:hover { background: rgba(255,255,255,0.13); border-color: rgba(255,255,255,0.25); }
.btn-secondary {
  display: inline-flex; align-items: center;
  background: transparent; color: var(--accent);
  padding: 13px 26px; border-radius: 980px;
  font-size: 0.88rem; font-weight: 500;
  text-decoration: none; border: 1.5px solid var(--accent);
  transition: background 0.15s, color 0.15s;
}
.btn-secondary:hover { background: var(--accent); color: white; }

/* ─── SECTION SHELL ─────────────────────────────────────────────────────────── */
.section { padding: 100px 28px; }
.section--alt { background: var(--bg2); }
.section--dark { background: #0a0a0f; color: #f0f0f5; }
.section-inner { max-width: 1280px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 68px; }
.section-header h2 {
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  font-weight: 800; letter-spacing: -0.03em; margin-bottom: 14px;
}
.section-header p { font-size: 1rem; color: var(--text2); max-width: 520px; margin: 0 auto; line-height: 1.7; }
.section-header--inv h2 { color: #f0f0f5; }
.section-header--inv p { color: rgba(240,240,245,0.5); }

/* ─── SCROLL-IN ANIMATIONS ──────────────────────────────────────────────────── */
.reveal { opacity: 0; transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.23,1,0.32,1); }
.reveal.from-left  { transform: translateX(-28px); }
.reveal.from-right { transform: translateX(28px); }
.reveal.from-below { transform: translateY(28px); }
.reveal.visible { opacity: 1; transform: translate(0,0); }

/* ─── PRODUCTS ──────────────────────────────────────────────────────────────── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 18px;
}

/* Tier accent colors */
.product-card[data-tier="desktop"]      { --tier-color: #86868b; }
.product-card[data-tier="professional"] { --tier-color: #bf5af2; }
.product-card[data-tier="inference"]    { --tier-color: #30d158; }
.product-card[data-tier="datacenter"]   { --tier-color: #2997ff; }
.product-card[data-tier="enterprise"]   { --tier-color: #ff9f0a; }
.product-card[data-tier="hyperscale"]   { --tier-color: #ff453a; }

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 0;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
  display: flex; flex-direction: column;
  cursor: default;
}
.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(var(--accent-rgb),0.25);
}
.product-card-stripe {
  height: 4px;
  background: var(--tier-color);
  flex-shrink: 0;
}
.product-card-body { padding: 26px 26px 20px; flex: 1; display: flex; flex-direction: column; }

.product-tier { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--tier-color); font-weight: 700; margin-bottom: 6px; }
.product-name { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.025em; margin-bottom: 14px; line-height: 1.2; }
.product-price { font-size: 2rem; font-weight: 800; letter-spacing: -0.04em; margin-bottom: 18px; line-height: 1; font-variant-numeric: tabular-nums; }
.spec-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.spec-item { display: flex; flex-direction: column; gap: 1px; }
.spec-label { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text3); }
.spec-value { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; }
.spec-type { font-size: 0.68rem; color: var(--text2); }
.product-explains { flex: 1; }
details.explain { border-top: 1px solid var(--border); }
details.explain:last-of-type { border-bottom: 1px solid var(--border); margin-bottom: 16px; }
details.explain summary {
  padding: 9px 0; font-size: 0.8rem; color: var(--text2);
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;
  user-select: none; transition: color 0.15s;
}
details.explain summary:hover { color: var(--text); }
details.explain summary::-webkit-details-marker { display: none; }
details.explain summary::after { content: '+'; font-size: 1rem; opacity: 0.5; flex-shrink: 0; }
details.explain[open] summary { color: var(--text); }
details.explain[open] summary::after { content: '−'; }
details.explain p { font-size: 0.8rem; color: var(--text2); line-height: 1.65; padding: 0 0 12px; }
.btn-quote {
  display: block; text-align: center;
  border: 1.5px solid var(--border2);
  border-radius: 980px; padding: 9px 18px;
  font-size: 0.78rem; font-weight: 600; text-decoration: none;
  color: var(--text2); transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.btn-quote:hover { border-color: var(--tier-color); color: var(--tier-color); background: rgba(var(--accent-rgb),0.04); }

/* ─── MODELS ────────────────────────────────────────────────────────────────── */
.explain-callout {
  border-radius: var(--r-sm);
  background: var(--accent-glow);
  border: 1px solid rgba(var(--accent-rgb),0.2);
  padding: 18px 22px;
  font-size: 0.88rem; line-height: 1.7;
  color: var(--text);
  margin-bottom: 48px;
}
.models-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 22px; }
.model-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 0;
  transition: box-shadow 0.25s, transform 0.25s;
}
.model-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.model-meta { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; flex-wrap: wrap; gap: 6px; }
.license-badge {
  font-size: 0.68rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 3px 9px; border-radius: 980px;
}
.license-mit { background: rgba(41,151,255,0.12); color: #2997ff; }
.license-apache { background: rgba(48,209,88,0.12); color: #30d158; }
.license-apache-2 { background: rgba(48,209,88,0.12); color: #30d158; }
.model-rank-badge { font-size: 0.68rem; color: var(--text3); font-weight: 600; }
.model-name { font-size: 1.55rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 3px; line-height: 1.15; }
.model-maker { font-size: 0.8rem; color: var(--text2); margin-bottom: 14px; }
.model-desc { font-size: 0.85rem; color: var(--text2); line-height: 1.65; margin-bottom: 20px; }
.model-params { display: flex; align-items: baseline; gap: 6px; margin-bottom: 16px; }
.param-count { font-size: 2.4rem; font-weight: 900; letter-spacing: -0.05em; color: var(--text); line-height: 1; font-variant-numeric: tabular-nums; }
.param-unit { font-size: 0.9rem; font-weight: 600; color: var(--text2); }
.param-note { font-size: 0.72rem; color: var(--text3); display: block; margin-top: 4px; line-height: 1.5; }
.memory-math-box {
  background: var(--bg2);
  border-radius: var(--r-sm); padding: 16px 18px; margin-bottom: 18px;
  border: 1px solid var(--border);
}
.mmb-label { font-size: 0.65rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text3); margin-bottom: 8px; }
.mmb-note {
  font-size: 0.72rem; color: var(--text3); line-height: 1.55;
  padding-bottom: 10px; margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
  font-style: italic;
}
.mmb-rows { display: flex; flex-direction: column; gap: 0; }
.mmb-row {
  display: flex; flex-direction: column;
  padding: 7px 0; border-bottom: 1px solid var(--border);
}
.mmb-row:last-child { border-bottom: none; padding-bottom: 2px; }
.mmb-row-label {
  font-size: 0.58rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text3); line-height: 1.2; margin-bottom: 2px;
}
.mmb-row-val { font-family: var(--mono); font-size: 0.8rem; color: var(--text2); }
.mmb-row--total .mmb-row-label { color: var(--accent); }
.mmb-row--total .mmb-row-val { color: var(--text); font-weight: 700; }

/* ─── PRODUCT ILLUSTRATIONS ─────────────────────────────────────────────────── */
.product-illustration {
  width: 100%; display: flex; align-items: center; justify-content: center;
  color: var(--tier-color); padding: 10px 0 6px;
}
.product-illustration svg {
  height: 56px; width: auto; max-width: 160px;
}
.min-build-box {
  border: 1px solid var(--border2); border-radius: var(--r-sm);
  padding: 14px 18px; margin-bottom: 16px;
}
.mbb-label { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text3); margin-bottom: 6px; }
.mbb-name { font-size: 0.95rem; font-weight: 700; }
.mbb-price { font-size: 0.85rem; color: var(--text2); margin: 2px 0; }
.mbb-fit { font-size: 0.75rem; color: var(--green); font-weight: 700; margin: 4px 0; }
.mbb-note { font-size: 0.75rem; color: var(--text3); line-height: 1.5; margin-top: 8px; }
.usecase-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.usecase-tag { font-size: 0.7rem; padding: 3px 9px; border-radius: 980px; background: var(--bg2); color: var(--text2); font-weight: 500; border: 1px solid var(--border); }

/* ─── HELP ME CHOOSE ────────────────────────────────────────────────────────── */
.path-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 52px; }
.path-btn {
  background: var(--card); border: 2px solid var(--border2);
  border-radius: var(--r); padding: 26px 22px;
  color: var(--text);
  cursor: pointer; text-align: left; display: flex; flex-direction: column; gap: 7px;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.15s;
}
.path-btn:hover { border-color: var(--accent); }
.path-btn.active { border-color: var(--text); box-shadow: var(--shadow-sm); }
.path-btn-icon { font-size: 2.2rem; line-height: 1; }
.path-btn-title { font-size: 1.05rem; font-weight: 700; letter-spacing: -0.015em; color: var(--text); }
.path-btn-sub { font-size: 0.78rem; color: var(--text2); }
[data-theme="dark"] .path-btn-sub { color: #c8c8ce; }
.path-pane { display: block; }
.path-pane.hidden { display: none; }
.path-head { margin-bottom: 24px; }
.path-head h3 { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.03em; }
.path-head p { font-size: 0.92rem; color: var(--text2); margin-top: 8px; line-height: 1.6; }
.rec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 26px; }
.rec-box { background: var(--bg2); border-radius: var(--r-sm); padding: 18px; border: 1px solid var(--border); }
.rec-box-label { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text3); margin-bottom: 6px; }
.rec-box-val { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.rec-box-why { font-size: 0.78rem; color: var(--text2); line-height: 1.55; }
.breakdown-table { border: 1px solid var(--border); border-radius: var(--r-sm); overflow: hidden; margin-bottom: 22px; }
.breakdown-row { display: flex; justify-content: space-between; align-items: center; padding: 11px 16px; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.breakdown-row:last-child { border-bottom: none; }
.breakdown-row--total { background: var(--text); color: var(--bg); font-weight: 700; }
.power-banner {
  display: flex; align-items: center; gap: 20px;
  background: rgba(255,159,10,0.08); border: 1px solid rgba(255,159,10,0.25);
  border-radius: var(--r-sm); padding: 16px 20px; margin-bottom: 20px;
}
.power-banner-watts { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.03em; color: var(--orange); }
.power-banner-desc { font-size: 0.8rem; color: var(--text2); line-height: 1.55; }
.honest-box {
  background: var(--bg2); border-left: 3px solid var(--text3);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 14px 18px; font-size: 0.8rem; color: var(--text2); line-height: 1.7;
  margin-bottom: 28px;
}

/* ─── CLUSTERS ──────────────────────────────────────────────────────────────── */
.cluster-explainer {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r); padding: 28px; margin-bottom: 32px;
}
.cluster-explainer h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.cluster-explainer p { font-size: 0.88rem; color: rgba(240,240,245,0.65); line-height: 1.7; }
.cluster-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 36px; }
.cc-box { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--r-sm); padding: 22px; }
.cc-box h4 { font-size: 0.95rem; font-weight: 700; color: #f0f0f5; margin-bottom: 12px; }
.cc-box p { font-size: 0.8rem; color: rgba(240,240,245,0.6); margin-bottom: 9px; line-height: 1.6; }
.cc-box p strong { color: rgba(240,240,245,0.88); }

/* CLUSTER VIZ */
.cluster-viz {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r); padding: 28px; margin-bottom: 28px;
}
.viz-title { font-size: 0.95rem; font-weight: 700; color: #f0f0f5; margin-bottom: 20px; }
.viz-controls { display: flex; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.viz-btn {
  font-size: 0.75rem; font-weight: 600; padding: 7px 14px;
  border-radius: 980px; border: 1px solid rgba(255,255,255,0.15);
  background: transparent; color: rgba(240,240,245,0.6);
  cursor: pointer; transition: all 0.2s;
}
.viz-btn:hover { border-color: rgba(41,151,255,0.5); color: rgba(41,151,255,0.9); }
.viz-btn.active { background: rgba(41,151,255,0.15); border-color: rgba(41,151,255,0.6); color: #2997ff; }
.viz-stage {
  display: flex; align-items: center; gap: 0; flex-wrap: wrap;
  min-height: 160px; position: relative;
}
.viz-machine {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  opacity: 1; transition: opacity 0.35s, transform 0.35s;
}
.viz-machine.hidden { opacity: 0; pointer-events: none; display: none; }
.viz-machine-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: rgba(240,240,245,0.5); }
.gpu-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }
.gpu-chip {
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 5px;
  background: rgba(255,255,255,0.04);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.58rem; font-weight: 700; color: rgba(255,255,255,0.35);
  transition: all 0.3s ease;
  font-family: var(--mono);
}
.gpu-chip.lit {
  border-color: rgba(41,151,255,0.6);
  background: rgba(41,151,255,0.12);
  color: rgba(41,151,255,0.9);
  box-shadow: 0 0 10px rgba(41,151,255,0.25);
}
.viz-machine-mem { font-size: 0.72rem; color: rgba(240,240,245,0.70); font-weight: 600; }
.viz-link {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 0 16px; min-width: 100px; gap: 6px;
  transition: opacity 0.35s;
}
.viz-link.hidden { opacity: 0; pointer-events: none; }
.viz-link-line {
  height: 2px; width: 70px;
  background: linear-gradient(90deg, rgba(41,151,255,0.8), rgba(41,151,255,0.2), rgba(41,151,255,0.8));
  background-size: 200% 100%;
  animation: linkFlow 1.8s linear infinite;
  border-radius: 1px;
}
@keyframes linkFlow { 0%{background-position:100% 0} 100%{background-position:-100% 0} }
.viz-link-label { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: rgba(41,151,255,0.6); white-space: nowrap; text-align: center; }
.viz-totals {
  display: flex; gap: 24px; flex-wrap: wrap;
  padding-top: 20px; margin-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.viz-stat-item { display: flex; flex-direction: column; gap: 2px; }
.viz-stat-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; color: rgba(240,240,245,0.65); font-weight: 700; }
.viz-stat-val { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.03em; color: #f0f0f5; }

/* Cluster example cards */
.cluster-cards { display: flex; flex-direction: column; gap: 14px; }
.cluster-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r); padding: 24px;
}
.cluster-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.cluster-card-header h4 { font-size: 1rem; font-weight: 700; color: #f0f0f5; }
.cluster-badge { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; padding: 3px 9px; border-radius: 980px; background: rgba(255,255,255,0.1); color: rgba(240,240,245,0.7); }
.cluster-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-bottom: 14px; }
.cstat-val { font-size: 1.45rem; font-weight: 800; letter-spacing: -0.03em; color: #f0f0f5; }
.cstat-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.07em; color: rgba(240,240,245,0.65); margin: 3px 0; }
.cstat-note { font-size: 0.72rem; color: rgba(240,240,245,0.55); line-height: 1.5; }
.cluster-note { font-size: 0.8rem; color: rgba(240,240,245,0.5); line-height: 1.6; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.08); }

/* ─── POWER CALCULATOR ──────────────────────────────────────────────────────── */
.calc-wrapper {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 36px; align-items: start;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 36px;
  box-shadow: var(--shadow-sm);
}
.calc-left { display: flex; flex-direction: column; gap: 22px; }
.calc-label { font-size: 0.85rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.calc-select {
  width: 100%; padding: 12px 14px;
  border: 1.5px solid var(--border2); border-radius: var(--r-sm);
  background: var(--bg2); color: var(--text);
  font-family: var(--font); font-size: 0.88rem;
  cursor: pointer; outline: none;
  transition: border-color 0.15s;
}
.calc-select:focus { border-color: var(--accent); }
.calc-readouts { display: flex; flex-direction: column; gap: 14px; }
.calc-readout { display: flex; flex-direction: column; gap: 3px; }
.calc-readout-label { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text3); }
.calc-readout-val { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.04em; font-variant-numeric: tabular-nums; transition: color 0.4s; }
.calc-readout-sub { font-size: 0.75rem; color: var(--text2); }
.calc-right { display: flex; align-items: center; justify-content: center; }

/* iPhone-style battery gauge */
.battery-indicator {
  display: flex; flex-direction: column; align-items: center;
  gap: 10px; width: 100%;
}
.battery-wrap { display: flex; align-items: center; width: 100%; }
.battery-body {
  flex: 1; height: 40px;
  border: 2px solid var(--border2);
  border-radius: 9px;
  position: relative; overflow: hidden;
  background: var(--bg2);
}
.battery-fill {
  position: absolute; top: 0; bottom: 0; left: 0;
  width: 5%;
  background-color: #30d158;
  border-radius: 7px;
  transition: background-color 0.4s;
}
.battery-nub {
  width: 8px; height: 18px;
  background: var(--border2);
  border-radius: 0 5px 5px 0;
  flex-shrink: 0; margin-left: -1px;
}
.battery-scale-labels {
  display: flex; justify-content: space-between;
  width: 100%; font-size: 0.6rem;
  color: var(--text3); font-weight: 600;
  letter-spacing: 0.02em; margin-top: -2px;
}
.battery-watts-display {
  display: flex; align-items: baseline; gap: 7px; margin-top: 4px;
}
.battery-watts-num {
  font-size: 2.6rem; font-weight: 900;
  letter-spacing: -0.04em; font-variant-numeric: tabular-nums; line-height: 1;
}
.battery-watts-unit {
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--text2);
}
.gauge-scale-note { text-align: center; font-size: 0.68rem; color: var(--text3); margin-top: 2px; }

/* ─── QUOTE FORM ────────────────────────────────────────────────────────────── */
.quote-form { max-width: 580px; margin: 0 auto; display: flex; flex-direction: column; gap: 22px; }
.field-float { position: relative; }
.field-float label {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  font-size: 0.88rem; color: var(--text2);
  transition: all 0.18s ease; pointer-events: none;
  background: transparent;
}
.field-float textarea ~ label { top: 18px; transform: none; }
.field-float input, .field-float textarea {
  width: 100%; padding: 22px 16px 8px;
  border: 1.5px solid var(--border2); border-radius: var(--r-sm);
  background: var(--card); color: var(--text);
  font-family: var(--font); font-size: 0.95rem; outline: none;
  transition: border-color 0.15s, background 0.15s;
}
.field-float textarea { padding-top: 26px; resize: vertical; min-height: 100px; }
.field-float input:focus, .field-float textarea:focus { border-color: var(--accent); }
.field-float input:focus ~ label,
.field-float input:not(:placeholder-shown) ~ label,
.field-float textarea:focus ~ label,
.field-float textarea:not(:placeholder-shown) ~ label {
  top: 8px; transform: none; font-size: 0.68rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--accent);
}
.field-float input::placeholder, .field-float textarea::placeholder { color: transparent; }
.form-submit { margin-top: 4px; }

/* ─── CONFIRMATION / REQUESTS ───────────────────────────────────────────────── */
.confirm-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 80px 28px; }
.confirm-inner { max-width: 500px; width: 100%; text-align: center; }
.confirm-checkmark {
  width: 64px; height: 64px; background: var(--green); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 24px;
  font-size: 1.8rem; color: white;
  animation: popIn 0.4s cubic-bezier(0.175,0.885,0.32,1.275);
}
@keyframes popIn { 0%{transform:scale(0)} 100%{transform:scale(1)} }
.confirm-inner h1 { font-size: 2rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 8px; }
.confirm-sub { color: var(--text2); margin-bottom: 32px; }
.confirm-card { border: 1px solid var(--border); border-radius: var(--r); padding: 24px; text-align: left; margin-bottom: 24px; }
.confirm-row { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.confirm-row:last-child { border-bottom: none; }
.confirm-row-label { font-size: 0.75rem; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: 0.06em; flex-shrink: 0; }
.confirm-row-val { font-size: 0.88rem; text-align: right; }
.confirm-id-val { font-size: 1.1rem; font-weight: 900; letter-spacing: 0.05em; color: var(--text); }
.confirm-next { font-size: 0.82rem; color: var(--text2); margin-bottom: 28px; line-height: 1.6; }
.confirm-actions { display: flex; gap: 12px; justify-content: center; }

.requests-section { padding: 100px 28px; min-height: 80vh; }
.requests-wrap { max-width: 1200px; margin: 0 auto; }
.req-table { border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; }
.req-head, .req-row {
  display: grid;
  grid-template-columns: 110px 1fr 1fr 1.5fr 110px 110px;
  gap: 0;
}
.req-head { background: var(--text); color: var(--bg); padding: 12px 18px; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; }
.req-row { padding: 13px 18px; border-bottom: 1px solid var(--border); font-size: 0.83rem; align-items: center; }
.req-row:last-child { border-bottom: none; }
.req-row:hover { background: var(--bg2); }
.req-id-cell { font-family: var(--mono); font-size: 0.75rem; color: var(--text2); }
.req-msg { grid-column: 1/-1; font-size: 0.75rem; color: var(--text2); padding: 4px 0 12px; }
.empty-state { text-align: center; padding: 80px 20px; }
.empty-state p { color: var(--text2); margin-bottom: 24px; }

/* ─── FOOTER ────────────────────────────────────────────────────────────────── */
.footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 32px 28px; }
.footer-inner { max-width: 1280px; margin: 0 auto; text-align: center; font-size: 0.75rem; color: var(--text3); display: flex; flex-direction: column; gap: 6px; }
.footer-inner a { color: var(--accent); text-decoration: none; }

/* ─── RESPONSIVE ────────────────────────────────────────────────────────────── */
@media(max-width:900px){
  .nav-links a:not(.nav-links-keep){ display:none; }
  .nav-hamburger{ display:flex; }
  .products-grid{ grid-template-columns:1fr; }
  .models-grid{ grid-template-columns:1fr; }
  .path-toggle{ grid-template-columns:1fr; }
  .rec-grid{ grid-template-columns:1fr; }
  .cluster-compare{ grid-template-columns:1fr; }
  .cluster-stats{ grid-template-columns:1fr 1fr; }
  .calc-wrapper{ grid-template-columns:1fr; }
  .battery-body{ height:34px; }
  .battery-watts-num{ font-size:2rem; }
  .gauge-scale-note{ margin-top:8px; }
  .req-head, .req-row{ grid-template-columns:90px 1fr 100px; }
  .req-head span:nth-child(n+4), .req-row span:nth-child(n+4){ display:none; }
  .confirm-actions{ flex-direction:column; }
  .hero-stats{ flex-direction:column; }
  .hero-stat + .hero-stat{ border-left:none; border-top:1px solid rgba(255,255,255,0.1); }
}
@media(max-width:600px){
  .viz-stage{ gap:8px; }
  .viz-link{ min-width:60px; padding:0 6px; }
  .viz-link-line{ width:40px; }
  .battery-body{ height:28px; }
  .battery-nub{ height:14px; }
  .battery-watts-num{ font-size:1.8rem; }
  .gauge-scale-note{ margin-top:6px; }
}