/* ─────────────────────────────────────────────────
   AI TOKENOMICS — varunsingla.com sub-page
   Dark / Light mode. Matches site purple palette.
───────────────────────────────────────────────── */

/* ─── DARK MODE (default) ─── */
:root, [data-theme="dark"] {
  --bg:        #07070f;
  --surface:   #0d0d1c;
  --surface2:  #111127;
  --surface3:  #161633;
  --border:    rgba(255,255,255,0.07);
  --border-h:  rgba(124,58,237,0.45);
  --p1: #7c3aed;
  --p2: #2563eb;
  --p3: #06b6d4;
  --text:      #eeeeff;
  --muted:     #8888aa;
  --dim:       #44445a;
  --green:     #10b981;
  --yellow:    #f59e0b;
  --red:       #ef4444;
  --orange:    #f97316;
  --shadow-glow: 0 0 30px rgba(124,58,237,0.15);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
  --nav-bg:    rgba(7,7,15,0.88);
  --code-bg:   #111127;
}

/* ─── LIGHT MODE ─── */
[data-theme="light"] {
  --bg:        #f8f8ff;
  --surface:   #eeeef8;
  --surface2:  #e5e5f5;
  --surface3:  #ddddf0;
  --border:    rgba(0,0,0,0.10);
  --border-h:  rgba(124,58,237,0.40);
  --p1: #6d28d9;
  --p2: #1d4ed8;
  --p3: #0891b2;
  --text:      #0f0f1a;
  --muted:     #4a4a6a;
  --dim:       #9090b0;
  --green:     #059669;
  --yellow:    #d97706;
  --red:       #dc2626;
  --orange:    #ea580c;
  --shadow-glow: 0 0 30px rgba(124,58,237,0.10);
  --shadow-card: 0 4px 16px rgba(0,0,0,0.08);
  --nav-bg:    rgba(248,248,255,0.92);
  --code-bg:   #e8e8f5;
}

/* ─── SYSTEM PREFERENCE FALLBACK ─── */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg:        #f8f8ff;
    --surface:   #eeeef8;
    --surface2:  #e5e5f5;
    --surface3:  #ddddf0;
    --border:    rgba(0,0,0,0.10);
    --border-h:  rgba(124,58,237,0.40);
    --p1: #6d28d9;
    --p2: #1d4ed8;
    --p3: #0891b2;
    --text:      #0f0f1a;
    --muted:     #4a4a6a;
    --dim:       #9090b0;
    --green:     #059669;
    --yellow:    #d97706;
    --red:       #dc2626;
    --orange:    #ea580c;
    --shadow-glow: 0 0 30px rgba(124,58,237,0.10);
    --shadow-card: 0 4px 16px rgba(0,0,0,0.08);
    --nav-bg:    rgba(248,248,255,0.92);
    --code-bg:   #e8e8f5;
  }
}

/* ─── BASE ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth; scroll-padding-top: 64px;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 1rem; background: var(--bg); color: var(--text);
  line-height: 1.65; overflow-x: hidden; min-height: 100vh;
  transition: background 0.25s ease, color 0.25s ease;
}
a { color: var(--p3); text-decoration: none; transition: opacity 0.15s; }
a:hover { opacity: 0.8; text-decoration: underline; }
button { cursor: pointer; font: inherit; border: none; background: none; }
img, svg { display: block; max-width: 100%; }
h1,h2,h3,h4 { line-height: 1.2; }
code {
  font-family: 'JetBrains Mono','Fira Code','Courier New',monospace;
  font-size: 0.85em; background: var(--code-bg);
  padding: 0.1em 0.4em; border-radius: 4px;
  border: 1px solid var(--border); color: var(--p3);
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--p1); border-radius: 3px; }

/* ─── AMBIENT GLOW (dark only) ─── */
.ambient {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 15% 10%, rgba(124,58,237,.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 85% 85%, rgba(37,99,235,.10) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 60% 40%, rgba(6,182,212,.05) 0%, transparent 50%);
  opacity: 1;
  transition: opacity 0.3s ease;
}
[data-theme="light"] .ambient { opacity: 0.3; }

/* ─── NAV ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.2s, background 0.25s;
}
.nav.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.15); }
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0.65rem 1.5rem;
  display: flex; align-items: center; gap: 1rem;
}
/* VS logo / home link */
.nav-logo {
  display: flex; align-items: center; gap: 0.55rem;
  font-weight: 700; font-size: 0.88rem; color: var(--text);
  text-decoration: none; flex-shrink: 0;
}
.nav-logo:hover { opacity: 1; text-decoration: none; }
.logo-vs {
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem; font-weight: 900; color: white; flex-shrink: 0;
}
.logo-name { color: var(--muted); font-weight: 500; font-size: 0.82rem; }
.nav-links {
  display: flex; align-items: center; gap: 1.1rem; margin-left: auto;
}
.nav-links a {
  font-size: 0.78rem; font-weight: 500; color: var(--muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); text-decoration: none; opacity: 1; }
/* Right-side actions: home icon + theme toggle */
.nav-actions {
  display: flex; align-items: center; gap: 0.4rem; margin-left: 0.75rem; flex-shrink: 0;
}
.nav-home {
  width: 34px; height: 34px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); border: 1px solid var(--border);
  background: transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  text-decoration: none; flex-shrink: 0;
}
.nav-home:hover {
  color: var(--text); background: var(--surface);
  border-color: var(--border-h); opacity: 1; text-decoration: none;
}
.theme-toggle {
  width: 34px; height: 34px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); border: 1px solid var(--border);
  background: transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.theme-toggle:hover { color: var(--text); background: var(--surface); border-color: var(--border-h); }

/* ─── LAYOUT ─── */
.container { max-width: 1200px; margin: 0 auto; padding-inline: 1.5rem; }
.section { padding-block: clamp(4rem, 8vw, 6rem); position: relative; z-index: 1; }
.section-alt { background: var(--surface); }
.section-label {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--p3); margin-bottom: 0.75rem;
}
.section-heading {
  font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text) 60%, var(--p3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.section-intro { font-size: 1.05rem; color: var(--muted); max-width: 60ch; margin-bottom: 3rem; }
.subsection-heading { font-size: 1.2rem; font-weight: 700; margin-bottom: 2rem; color: var(--text); }

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  color: white; font-weight: 700; font-size: 0.9rem;
  padding: 0.7rem 1.5rem; border-radius: 9999px;
  text-decoration: none; transition: opacity 0.15s;
  box-shadow: 0 4px 20px rgba(124,58,237,0.3);
}
.btn-primary:hover { opacity: 0.88; text-decoration: none; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: transparent; color: var(--text); font-weight: 600; font-size: 0.9rem;
  padding: 0.7rem 1.5rem; border-radius: 9999px;
  border: 1px solid var(--border); text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}
.btn-ghost:hover { border-color: var(--border-h); background: var(--surface); text-decoration: none; opacity: 1; }

/* ─── HERO ─── */
.hero {
  min-height: 100dvh; display: flex; align-items: center;
  padding-top: 80px; position: relative; z-index: 1; overflow: hidden;
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
}
.hero-content { position: relative; z-index: 1; padding-block: 5rem; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(124,58,237,0.12); color: var(--p1);
  border: 1px solid rgba(124,58,237,0.3); border-radius: 9999px;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.35rem 0.9rem; margin-bottom: 1.5rem;
}
[data-theme="light"] .hero-badge { background: rgba(109,40,217,0.08); }
.hero-heading {
  font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 900; line-height: 1.05; margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text) 40%, var(--p3) 70%, var(--p1) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-heading em { font-style: italic; }
.hero-sub { font-size: 1.1rem; color: var(--muted); max-width: 52ch; margin-bottom: 2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 4rem; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 2rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.stat-num {
  display: block; font-size: 1.5rem; font-weight: 800;
  background: linear-gradient(135deg, var(--p3), var(--p1));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { font-size: 0.72rem; color: var(--muted); max-width: 22ch; }

/* ─── STAT STRIP ─── */
.stat-strip {
  background: linear-gradient(90deg, rgba(124,58,237,0.15), rgba(37,99,235,0.15), rgba(6,182,212,0.15));
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding-block: 1.75rem; position: relative; z-index: 1;
}
[data-theme="light"] .stat-strip {
  background: linear-gradient(90deg, rgba(109,40,217,0.08), rgba(29,78,216,0.08), rgba(8,145,178,0.08));
}
.stat-strip .container { display: flex; flex-wrap: wrap; gap: 2.5rem; justify-content: space-around; }
.strip-num {
  display: block; font-size: 1.75rem; font-weight: 900;
  background: linear-gradient(135deg, var(--text), var(--p3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.strip-label { font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* ─── TOKEN DEMO ─── */
.explainer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-bottom: 4rem; }
@media (max-width: 768px) { .explainer-grid { grid-template-columns: 1fr; } }
.primary-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 1.5rem;
}
.token-demo { display: flex; flex-direction: column; gap: 1rem; }
.token-demo label { font-size: 0.78rem; font-weight: 600; color: var(--muted); }
.token-input input {
  width: 100%; padding: 0.7rem 1rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; font-size: 1rem; color: var(--text); margin-top: 0.4rem;
  transition: border-color 0.15s;
}
.token-input input:focus { outline: 2px solid var(--p1); outline-offset: 2px; border-color: var(--p1); }
.token-output {
  display: flex; flex-wrap: wrap; gap: 0.4rem; min-height: 44px;
  padding: 0.75rem; background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
}
.token-chip {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 0.72rem; font-family: 'JetBrains Mono',monospace; font-weight: 500;
  border: 1px solid currentColor;
}
.token-chip:nth-child(7n+1) { color: #06b6d4; background: rgba(6,182,212,0.10); }
.token-chip:nth-child(7n+2) { color: #8b5cf6; background: rgba(139,92,246,0.10); }
.token-chip:nth-child(7n+3) { color: #f59e0b; background: rgba(245,158,11,0.10); }
.token-chip:nth-child(7n+4) { color: #f97316; background: rgba(249,115,22,0.10); }
.token-chip:nth-child(7n+5) { color: #3b82f6; background: rgba(59,130,246,0.10); }
.token-chip:nth-child(7n+6) { color: #ef4444; background: rgba(239,68,68,0.10); }
.token-chip:nth-child(7n+0) { color: #10b981; background: rgba(16,185,129,0.10); }
[data-theme="light"] .token-chip:nth-child(7n+1) { color: #0e7490; background: rgba(6,182,212,0.12); }
[data-theme="light"] .token-chip:nth-child(7n+2) { color: #6d28d9; background: rgba(109,40,217,0.10); }
[data-theme="light"] .token-chip:nth-child(7n+3) { color: #b45309; background: rgba(180,83,9,0.10); }
[data-theme="light"] .token-chip:nth-child(7n+4) { color: #c2410c; background: rgba(194,65,12,0.10); }
[data-theme="light"] .token-chip:nth-child(7n+5) { color: #1d4ed8; background: rgba(29,78,216,0.10); }
[data-theme="light"] .token-chip:nth-child(7n+6) { color: #b91c1c; background: rgba(185,28,28,0.10); }
[data-theme="light"] .token-chip:nth-child(7n+0) { color: #065f46; background: rgba(6,95,70,0.10); }
.token-count { font-size: 0.78rem; color: var(--muted); font-family: 'JetBrains Mono',monospace; }
.explainer-facts { display: flex; flex-direction: column; gap: 1.5rem; }
.fact-item { display: flex; gap: 1rem; align-items: flex-start; }
.fact-icon {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 8px;
  background: rgba(124,58,237,0.12); color: var(--p1);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(124,58,237,0.2);
}
.fact-item strong { display: block; font-size: 0.88rem; font-weight: 700; margin-bottom: 2px; }
.fact-item p { font-size: 0.82rem; color: var(--muted); margin: 0; }

/* ─── TOKEN FLOW ─── */
.flow-section { margin-bottom: 4rem; }
.token-flow {
  display: flex; align-items: stretch; flex-wrap: wrap; gap: 0.5rem;
  padding: 1.5rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; margin-top: 1.5rem;
}
.flow-step {
  flex: 1; min-width: 155px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 0.9rem;
}
.highlight-step { background: rgba(124,58,237,0.07); border-color: rgba(124,58,237,0.3); }
.flow-num { font-size: 0.68rem; font-weight: 700; color: var(--dim); font-family: monospace; margin-bottom: 0.35rem; }
.flow-badge {
  display: inline-block; font-size: 0.62rem; font-weight: 800;
  padding: 1px 7px; border-radius: 9999px; letter-spacing: 0.06em;
  text-transform: uppercase; margin-bottom: 0.4rem;
}
.flow-badge.input { background: rgba(37,99,235,0.15); color: var(--p2); }
.flow-badge.output { background: rgba(249,115,22,0.15); color: var(--orange); }
.flow-content strong { display: block; font-size: 0.83rem; font-weight: 700; margin-bottom: 0.3rem; }
.flow-content p { font-size: 0.76rem; color: var(--muted); margin: 0; }
.flow-arrow { display: flex; align-items: center; color: var(--dim); font-size: 1.25rem; padding-top: 1rem; }

/* ─── BUYING CARDS ─── */
.buying-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
@media (max-width: 768px) { .buying-grid { grid-template-columns: 1fr; } }
.buying-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.buying-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-glow); }
.buying-icon { font-size: 1.75rem; margin-bottom: 0.7rem; }
.buying-card h4 { font-size: 0.93rem; font-weight: 700; margin-bottom: 0.5rem; }
.buying-card p { font-size: 0.83rem; color: var(--muted); margin-bottom: 1rem; }
.buying-tag {
  display: inline-block; font-size: 0.68rem; font-weight: 600;
  padding: 3px 10px; border-radius: 9999px;
  background: var(--surface2); color: var(--muted); border: 1px solid var(--border);
}
.active-tag { background: rgba(6,182,212,0.12); color: var(--p3); border-color: rgba(6,182,212,0.3); }

/* ─── PRICING TABLE ─── */
.filter-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.filter-btn {
  padding: 0.32rem 0.85rem; border-radius: 9999px;
  font-size: 0.72rem; font-weight: 600; border: 1px solid var(--border);
  color: var(--muted); background: transparent; transition: all 0.15s;
}
.filter-btn.active, .filter-btn:hover {
  background: linear-gradient(135deg, var(--p1), var(--p2)); color: white; border-color: transparent;
}
.pricing-table-wrap {
  overflow-x: auto; border-radius: 16px; border: 1px solid var(--border); margin-bottom: 1rem;
}
.pricing-table { min-width: 800px; }
.pricing-table thead { background: var(--surface); }
.pricing-table th {
  padding: 0.72rem 1rem; text-align: left; font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted);
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
.pricing-table td {
  padding: 0.72rem 1rem; font-size: 0.83rem; vertical-align: middle;
  border-bottom: 1px solid var(--border);
}
.pricing-table tbody tr { transition: background 0.12s; }
.pricing-table tbody tr:hover { background: var(--surface); }
.pricing-table tbody tr:last-child td { border-bottom: none; }
.model-name { font-weight: 700; font-size: 0.85rem; }
.provider {
  display: inline-block; font-size: 0.68rem; font-weight: 700; padding: 2px 8px; border-radius: 9999px;
}
.provider.openai { background: rgba(16,163,127,0.12); color: #10a37f; }
.provider.anthropic { background: rgba(209,93,62,0.12); color: #d15d3e; }
.provider.google { background: rgba(66,133,244,0.12); color: #4285f4; }
.provider.deepseek { background: rgba(139,92,246,0.15); color: #8b5cf6; }
.provider.meta { background: rgba(24,119,242,0.12); color: #1877f2; }
.provider.mistral { background: rgba(255,126,0,0.12); color: #ff7e00; }
.tier-badge { display: inline-block; font-size: 0.68rem; font-weight: 700; padding: 2px 8px; border-radius: 9999px; }
.tier-badge.flagship { background: rgba(245,158,11,0.15); color: #f59e0b; }
.tier-badge.mid { background: rgba(59,130,246,0.15); color: #60a5fa; }
.tier-badge.fast { background: rgba(16,185,129,0.15); color: #10b981; }
.tier-badge.reasoning { background: rgba(139,92,246,0.15); color: #a78bfa; }
.tier-badge.opensource { background: rgba(249,115,22,0.15); color: #fb923c; }
[data-theme="light"] .tier-badge.flagship { color: #b45309; }
[data-theme="light"] .tier-badge.mid { color: #1d4ed8; }
[data-theme="light"] .tier-badge.fast { color: #059669; }
[data-theme="light"] .tier-badge.reasoning { color: #6d28d9; }
[data-theme="light"] .tier-badge.opensource { color: #c2410c; }
.price { font-family: 'JetBrains Mono',monospace; font-size: 0.78rem; font-weight: 700; }
.price.high { color: var(--red); }
.price.good { color: var(--green); }
.pricing-note {
  display: flex; align-items: flex-start; gap: 0.5rem; font-size: 0.72rem; color: var(--muted);
  padding: 0.75rem 1rem; background: var(--surface); border-radius: 8px; border: 1px solid var(--border);
}

/* ─── SCENARIO CARDS ─── */
.scenario-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 1.5rem; }
@media (max-width: 900px) { .scenario-grid { grid-template-columns: 1fr; } }
.scenario-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem;
  transition: border-color 0.15s;
}
.scenario-card:hover { border-color: var(--border-h); }
.scenario-label { font-size: 0.68rem; font-weight: 700; color: var(--muted); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.08em; }
.scenario-rows { display: flex; flex-direction: column; gap: 0.65rem; }
.scenario-row { display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
.scenario-row span { font-size: 0.83rem; color: var(--muted); }
.scenario-row strong { font-family: 'JetBrains Mono',monospace; font-size: 0.95rem; font-weight: 800; color: var(--text); }

/* ─── LEVERS ─── */
.levers-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-bottom: 3rem; }
@media (max-width: 768px) { .levers-grid { grid-template-columns: 1fr; } }
.lever-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.lever-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-glow); }
.lever-header { display: flex; align-items: center; gap: 0.7rem; }
.lever-num { font-family: monospace; font-size: 0.68rem; font-weight: 700; color: var(--dim); }
.impact-badge { font-size: 0.62rem; font-weight: 800; padding: 2px 9px; border-radius: 9999px; text-transform: uppercase; letter-spacing: 0.06em; }
.impact-high { background: rgba(239,68,68,0.12); color: var(--red); }
.impact-medium { background: rgba(245,158,11,0.12); color: var(--yellow); }
.impact-low { background: rgba(59,130,246,0.12); color: #60a5fa; }
[data-theme="light"] .impact-low { color: #1d4ed8; }
.lever-card h3 { font-size: 0.93rem; font-weight: 700; color: var(--text); }
.lever-card > p { font-size: 0.83rem; color: var(--muted); }
.lever-example {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 1rem;
}
.example-label { font-size: 0.62rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 0.5rem; }
.lever-example ul { padding-left: 1.25rem; display: flex; flex-direction: column; gap: 0.25rem; }
.lever-example li { font-size: 0.8rem; color: var(--muted); }
.lever-example p { font-size: 0.8rem; color: var(--muted); margin: 0; }
.lever-tip {
  font-size: 0.76rem; color: var(--muted);
  padding: 0.7rem 0.9rem; background: rgba(124,58,237,0.07);
  border-radius: 8px; border-left: 3px solid var(--p1);
}
.lever-tip strong { color: var(--p3); }
.lever-savings { font-family: 'JetBrains Mono',monospace; font-size: 0.83rem; font-weight: 700; color: var(--green); margin-top: auto; }
.code-block { font-family: 'JetBrains Mono',monospace; font-size: 0.75rem; }
.code-before { color: var(--red); background: rgba(239,68,68,0.08); padding: 0.5rem 0.75rem; border-radius: 4px; border: 1px solid rgba(239,68,68,0.2); margin-bottom: 0.35rem; }
.code-arrow { text-align: center; color: var(--dim); font-size: 0.9rem; margin-block: 0.2rem; }
.code-after { color: var(--green); background: rgba(16,185,129,0.08); padding: 0.5rem 0.75rem; border-radius: 4px; border: 1px solid rgba(16,185,129,0.2); }

/* ─── SAVINGS BAR ─── */
.savings-summary { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; }
.savings-bar-chart { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
.savings-bar-row { display: flex; align-items: center; gap: 1rem; }
.savings-bar-label { font-size: 0.8rem; color: var(--muted); width: 240px; flex-shrink: 0; }
@media (max-width: 600px) { .savings-bar-label { width: 120px; font-size: 0.68rem; } }
.savings-bar-track { flex: 1; height: 22px; background: var(--bg); border-radius: 9999px; border: 1px solid var(--border); overflow: hidden; }
.savings-bar-fill {
  height: 100%; background: linear-gradient(90deg, var(--p1), var(--p3));
  border-radius: 9999px; display: flex; align-items: center; justify-content: flex-end;
  padding-right: 0.55rem; font-size: 0.68rem; font-weight: 700; color: white;
  transition: width 1.2s cubic-bezier(0.16,1,0.3,1);
}
.savings-note { font-size: 0.7rem; color: var(--dim); margin-top: 1rem; }

/* ─── HOSTING ─── */
.hosting-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-bottom: 4rem; }
@media (max-width: 768px) { .hosting-grid { grid-template-columns: 1fr; } }
.hosting-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem; transition: border-color 0.15s, box-shadow 0.15s;
}
.hosting-card:hover { border-color: var(--border-h); }
.hosting-highlight { border-color: rgba(124,58,237,0.4); box-shadow: 0 0 30px rgba(124,58,237,0.10); }
.hosting-header { display: flex; align-items: center; gap: 0.75rem; }
.hosting-icon { font-size: 1.4rem; }
.hosting-header h3 { font-size: 0.93rem; font-weight: 700; }
.hosting-meta { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.meta-tag { font-size: 0.68rem; font-weight: 600; padding: 2px 10px; border-radius: 9999px; background: var(--surface); border: 1px solid var(--border); color: var(--muted); }
.hosting-pros, .hosting-cons { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.hosting-pros li, .hosting-cons li { font-size: 0.8rem; color: var(--muted); }
.hosting-price { font-family: 'JetBrains Mono',monospace; font-size: 0.83rem; font-weight: 700; color: var(--text); }
.hosting-verdict { font-size: 0.83rem; color: var(--p3); font-weight: 700; }

/* ─── TCO ─── */
.tco-section { margin-bottom: 4rem; }
.tco-cards { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; margin-top: 1.5rem; margin-bottom: 2rem; }
@media (max-width: 900px) { .tco-cards { grid-template-columns: repeat(2,1fr); } }
.tco-card { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; text-align: center; }
.tco-highlight { border-color: rgba(124,58,237,0.4); background: rgba(124,58,237,0.06); }
.tco-threshold { font-size: 1.05rem; font-weight: 800; color: var(--p3); margin-bottom: 0.5rem; }
.tco-card p { font-size: 0.76rem; color: var(--muted); }
.tco-bar-chart {
  display: flex; align-items: flex-end; gap: 3rem; padding: 1.5rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px;
  min-height: 380px; margin-bottom: 1rem;
}
.tco-year { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; flex: 1; }
.tco-year-label { font-size: 0.72rem; color: var(--muted); font-weight: 600; text-align: center; }
.tco-year-label small { color: var(--dim); font-weight: 400; }
.tco-bars { display: flex; align-items: flex-end; gap: 0.75rem; }
.tco-bar { width: 54px; border-radius: 4px 4px 0 0; display: flex; align-items: flex-start; justify-content: center; padding-top: 6px; }
.tco-bar span { font-size: 9px; font-weight: 700; color: white; writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }
.tco-bar.api { background: linear-gradient(180deg, var(--red), rgba(239,68,68,0.5)); }
.tco-bar.ncp { background: linear-gradient(180deg, var(--orange), rgba(249,115,22,0.5)); }
.tco-bar.factory { background: linear-gradient(180deg, var(--p1), rgba(124,58,237,0.5)); }
.tco-legend { display: flex; gap: 1.5rem; font-size: 0.8rem; color: var(--muted); margin-bottom: 0.5rem; align-items: center; }
.legend-dot { width: 10px; height: 10px; border-radius: 9999px; display: inline-block; }
.api-dot { background: var(--red); }
.ncp-dot { background: var(--orange); }
.factory-dot { background: var(--p1); }
.tco-source { font-size: 0.7rem; color: var(--dim); }

/* ─── STACK DONUT ─── */
.stack-donut-wrap {
  display: flex; gap: 2.5rem; align-items: flex-start;
  padding: 2rem; background: var(--bg); border: 1px solid var(--border);
  border-radius: 16px; flex-wrap: wrap;
}
.stack-donut { flex-shrink: 0; }
.stack-legend { flex: 1; min-width: 240px; display: flex; flex-direction: column; gap: 1.25rem; }
.stack-legend-item { display: flex; gap: 0.75rem; align-items: flex-start; }
.stack-dot { width: 12px; height: 12px; border-radius: 9999px; flex-shrink: 0; margin-top: 4px; }
.stack-legend-item strong { font-size: 0.86rem; font-weight: 700; display: block; }
.stack-legend-item span { font-family: 'JetBrains Mono',monospace; font-size: 0.72rem; color: var(--p3); display: block; margin-bottom: 2px; }
.stack-legend-item p { font-size: 0.76rem; color: var(--muted); margin: 0; }

/* ─── FINOPS ─── */
.maturity-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 1.5rem; }
@media (max-width: 768px) { .maturity-grid { grid-template-columns: 1fr; } }
.maturity-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem;
  position: relative; overflow: hidden; transition: border-color 0.15s, box-shadow 0.15s;
}
.maturity-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-glow); }
.maturity-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--p1), var(--p2)); }
.maturity-card:nth-child(2)::before { background: linear-gradient(90deg, var(--p2), var(--p3)); }
.maturity-card:nth-child(3)::before { background: linear-gradient(90deg, var(--p3), var(--green)); }
.maturity-step { font-size: 0.66rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; }
.maturity-card h4 { font-size: 0.93rem; font-weight: 700; margin-bottom: 1rem; }
.maturity-card ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.maturity-card li { font-size: 0.8rem; color: var(--muted); padding-left: 1.25rem; position: relative; }
.maturity-card li::before { content: '→'; position: absolute; left: 0; color: var(--p3); font-weight: 700; }

/* ─── TOOLS GRID ─── */
.tools-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.25rem; margin-top: 1.5rem; }
@media (max-width: 768px) { .tools-grid { grid-template-columns: 1fr 1fr; } }
.tool-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.tool-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-glow); }
.tool-name { font-size: 0.88rem; font-weight: 700; margin-bottom: 0.2rem; }
.tool-type { font-size: 0.7rem; color: var(--muted); margin-bottom: 0.75rem; }
.tool-feature { font-size: 0.76rem; color: var(--p3); font-weight: 500; }

/* ─── CALCULATOR ─── */
.calculator-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 2rem;
}
@media (max-width: 768px) { .calculator-wrap { grid-template-columns: 1fr; } }
.calc-inputs h3, .calc-results h3 { font-size: 0.93rem; font-weight: 700; margin-bottom: 1.5rem; color: var(--text); }
.calc-group { margin-bottom: 1.2rem; }
.calc-group label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--muted); margin-bottom: 0.45rem; }
.calc-group label small { font-weight: 400; font-size: 0.7rem; }
.calc-group input, .calc-group select {
  width: 100%; padding: 0.65rem 0.9rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; font-size: 0.88rem; color: var(--text); transition: border-color 0.15s;
}
.calc-group input:focus, .calc-group select:focus { outline: 2px solid var(--p1); outline-offset: 2px; border-color: var(--p1); }
.calc-group select option { background: var(--bg); color: var(--text); }
.calc-optimisations { display: flex; flex-direction: column; gap: 0.5rem; }
.opt-toggle {
  display: flex; align-items: center; gap: 0.7rem; font-size: 0.8rem; color: var(--muted);
  cursor: pointer; padding: 0.55rem 0.8rem; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg);
  transition: border-color 0.15s, background 0.15s;
}
.opt-toggle:hover { border-color: var(--border-h); background: rgba(124,58,237,0.05); }
.opt-toggle input[type="checkbox"] { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
  width: 32px; height: 17px; border-radius: 9999px; background: var(--dim);
  flex-shrink: 0; position: relative; transition: background 0.15s;
}
.toggle-track::after {
  content: ''; position: absolute; left: 2px; top: 2px; width: 13px; height: 13px;
  border-radius: 9999px; background: white; transition: transform 0.15s; box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
.opt-toggle input:checked ~ .toggle-track { background: var(--p1); }
.opt-toggle input:checked ~ .toggle-track::after { transform: translateX(15px); }
.opt-impact { margin-left: auto; font-family: 'JetBrains Mono',monospace; font-size: 0.7rem; font-weight: 700; color: var(--green); white-space: nowrap; }
.calc-results { display: flex; flex-direction: column; gap: 1rem; }
.calc-result-primary {
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; text-align: center;
}
.calc-result-primary.optimised { border-color: rgba(124,58,237,0.4); background: rgba(124,58,237,0.06); }
.result-label { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 0.5rem; }
.result-value {
  font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 900;
  background: linear-gradient(135deg, var(--text), var(--p3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.calc-result-primary.optimised .result-value {
  background: linear-gradient(135deg, var(--p3), var(--p1));
  -webkit-background-clip: text; background-clip: text;
}
.calc-arrow-down { text-align: center; font-size: 1.5rem; color: var(--dim); }
.savings-callout {
  text-align: center; background: rgba(16,185,129,0.10);
  border: 1px solid rgba(16,185,129,0.25); border-radius: 12px; padding: 1rem;
  font-weight: 700; color: var(--green);
}
#savingsPct { font-size: 1.75rem; font-weight: 900; display: block; }
#savingsAmt { font-size: 0.78rem; font-family: 'JetBrains Mono',monospace; font-weight: 500; color: var(--muted); }
.calc-breakdown { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.breakdown-row { display: flex; justify-content: space-between; padding: 0.45rem 1rem; font-size: 0.76rem; border-bottom: 1px solid var(--border); }
.breakdown-row:last-child { border-bottom: none; }
.breakdown-row span:first-child { color: var(--muted); }
.breakdown-row span:last-child { font-family: 'JetBrains Mono',monospace; font-weight: 700; }
.divider-row { border-top: 1px solid var(--border); }
.total-row { background: var(--surface); }
.total-row span:last-child { color: var(--p3); }
.calc-note { font-size: 0.7rem; color: var(--dim); }

/* ─── FOOTER ─── */
.footer { background: var(--surface); border-top: 1px solid var(--border); padding-block: 2.5rem; position: relative; z-index: 1; }
.footer-inner { display: flex; flex-direction: column; gap: 1.5rem; align-items: center; text-align: center; }
.footer-logo {
  width: 34px; height: 34px; border-radius: 7px;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 0.82rem; color: white;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; }
.footer-links a { font-size: 0.8rem; color: var(--muted); }
.footer-links a:hover { color: var(--p3); opacity: 1; }
.footer-note { font-size: 0.7rem; color: var(--dim); max-width: 60ch; }

/* ─── UTILS ─── */
.hidden { display: none !important; }
:focus-visible { outline: 2px solid var(--p1); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }
@media (max-width: 640px) {
  .nav-links { display: none; }
  .tco-bar-chart { min-height: 240px; }
  .tco-bar { width: 38px; }
  .tco-bar span { font-size: 8px; }
}