/* ==========================================================================
   VialVibes Design System
   Tagline: Good Vibes. Serious Science.
   Outside = playful / energetic · Inside = precise / trustworthy / RUO-serious
   Dark-mode first. Soft glows + glass — not gamer neon overload.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  /* Backgrounds */
  --vv-bg-deep: #0F0C29;
  --vv-bg: #121212;
  --vv-bg-elevated: #1E1B4B;
  --vv-bg-card: rgba(30, 27, 75, 0.55);
  --vv-bg-charcoal: #1A1A1A;

  /* Text */
  --vv-text: #F8F9FA;
  --vv-text-muted: #94A3B8;
  --vv-text-dim: #64748B;

  /* Accents */
  --vv-cyan: #00E5FF;
  --vv-cyan-soft: #22D3EE;
  --vv-violet: #A855F7;
  --vv-violet-hot: #D500F9;
  --vv-mint: #00FFAA;
  --vv-mint-soft: #00F5D4;

  /* Category energy (sparingly) */
  --vv-cat-cellular: #3B82F6;
  --vv-cat-performance: #F97316;
  --vv-cat-cognitive: #A855F7;
  --vv-cat-cosmetic: #F472B6;
  --vv-cat-metabolic: #22C55E;
  --vv-cat-longevity: #00E5FF;

  /* Surfaces / borders */
  --vv-border: rgba(248, 249, 250, 0.08);
  --vv-border-strong: rgba(0, 229, 255, 0.28);
  --vv-glow-cyan: 0 0 40px rgba(0, 229, 255, 0.15);
  --vv-glow-mint: 0 0 32px rgba(0, 255, 170, 0.12);

  /* Legacy aliases (existing pages) */
  --tpl-emerald: var(--vv-mint);
  --tpl-slate: var(--vv-bg-deep);

  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  --radius-lg: 1.25rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 1.75rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--vv-bg-deep);
  color: var(--vv-text);
  min-height: 100vh;
  line-height: 1.5;
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(168, 85, 247, 0.18), transparent 50%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(0, 229, 255, 0.12), transparent 45%),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(0, 255, 170, 0.06), transparent 40%);
  background-attachment: fixed;
}

/* Force dark readability over leftover light utility classes */
body.bg-slate-50,
body.bg-white {
  background-color: var(--vv-bg-deep) !important;
  color: var(--vv-text) !important;
}

.heading-font,
.section-header,
.display-font {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.035em;
}

.font-mono-data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- Nav ---------- */
.vv-nav,
nav.bg-white,
nav {
  background: rgba(15, 12, 41, 0.82) !important;
  border-bottom: 1px solid var(--vv-border) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-link {
  transition: color 0.2s ease;
  color: var(--vv-text-muted) !important;
}

.nav-link:hover,
.nav-link.active {
  color: var(--vv-cyan) !important;
}

/* ---------- Buttons ---------- */
.vv-btn-primary,
a.vv-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.95rem;
  color: #0F0C29 !important;
  background: linear-gradient(135deg, var(--vv-cyan) 0%, var(--vv-mint) 100%);
  box-shadow: var(--vv-glow-cyan);
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
  text-decoration: none;
}

.vv-btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 0 48px rgba(0, 229, 255, 0.28);
}

.vv-btn-ghost,
a.vv-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-xl);
  font-weight: 600;
  color: var(--vv-text) !important;
  border: 1px solid rgba(248, 249, 250, 0.18);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.2s ease, background 0.2s ease;
  text-decoration: none;
}

.vv-btn-ghost:hover {
  border-color: var(--vv-border-strong);
  background: rgba(0, 229, 255, 0.06);
}

/* Emerald CTAs → VialVibes gradient */
.bg-emerald-500,
.bg-emerald-600,
.bg-emerald-700,
button.bg-emerald-600,
a.bg-emerald-600 {
  background: linear-gradient(135deg, #00E5FF 0%, #00FFAA 100%) !important;
  color: #0F0C29 !important;
  border: none !important;
}

.hover\:bg-emerald-600:hover,
.hover\:bg-emerald-700:hover,
.hover\:bg-emerald-500:hover {
  filter: brightness(1.05);
}

.text-emerald-400,
.text-emerald-500,
.text-emerald-600,
.text-emerald-700,
.text-emerald-300 {
  color: var(--vv-cyan-soft) !important;
}

.border-emerald-400,
.border-emerald-500,
.hover\:border-emerald-400:hover,
.hover\:border-emerald-500:hover {
  border-color: rgba(0, 229, 255, 0.45) !important;
}

/* ---------- Cards / glass ---------- */
.vv-glass,
.peptide-card,
.bg-white.border,
article.peptide-card {
  background: var(--vv-bg-card) !important;
  border: 1px solid var(--vv-border) !important;
  color: var(--vv-text) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.peptide-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-2xl) !important;
  overflow: hidden;
}

.peptide-card:hover {
  transform: translateY(-6px);
  border-color: var(--vv-border-strong) !important;
  box-shadow: var(--vv-glow-cyan), 0 16px 40px rgba(0, 0, 0, 0.35);
}

.peptide-card .text-slate-600,
.peptide-card .text-slate-500,
.bg-white .text-slate-600,
.bg-white .text-slate-500,
.text-slate-600,
.text-slate-500,
.text-slate-400,
.text-slate-700,
.text-slate-800,
.text-slate-900 {
  color: var(--vv-text-muted) !important;
}

/* Light panels → dark glass */
.bg-white,
.bg-slate-50,
.bg-slate-100 {
  background-color: rgba(30, 27, 75, 0.45) !important;
  color: var(--vv-text) !important;
}

.border-slate-100,
.border-slate-200,
.border-slate-300 {
  border-color: var(--vv-border) !important;
}

/* ---------- Hero ---------- */
.hero-dark,
.vv-hero {
  background:
    radial-gradient(ellipse 70% 60% at 70% 40%, rgba(168, 85, 247, 0.2), transparent 55%),
    radial-gradient(ellipse 50% 40% at 20% 60%, rgba(0, 229, 255, 0.14), transparent 50%),
    linear-gradient(160deg, #0F0C29 0%, #1E1B4B 45%, #0F0C29 100%);
  position: relative;
  overflow: hidden;
}

.hero-dark::before,
.vv-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent);
}

/* ---------- RUO banner (serious interior) ---------- */
.ruo-banner {
  background: rgba(168, 85, 247, 0.12);
  border-bottom: 1px solid rgba(168, 85, 247, 0.35);
  color: #E9D5FF;
}

.ruo-banner a {
  color: var(--vv-cyan);
}

/* ---------- Forms ---------- */
input,
textarea,
select {
  background: rgba(15, 12, 41, 0.7) !important;
  border-color: var(--vv-border) !important;
  color: var(--vv-text) !important;
}

input::placeholder,
textarea::placeholder {
  color: var(--vv-text-dim) !important;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--vv-cyan) !important;
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}

/* ---------- Tables / specs ---------- */
.spec-table th {
  text-align: left;
  font-weight: 600;
  color: var(--vv-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--vv-border);
  width: 40%;
}

.spec-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--vv-border);
  font-size: 0.875rem;
  color: var(--vv-text);
}

.product-img {
  background: linear-gradient(145deg, #1E1B4B 0%, #0F0C29 55%, #121212 100%);
}

/* ---------- Footer ---------- */
footer.bg-slate-900,
footer {
  background: #0A081C !important;
  border-top: 1px solid var(--vv-border);
  color: var(--vv-text-muted) !important;
}

/* ---------- Research prose (readable on dark) ---------- */
.prose-research h2 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.03em;
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--vv-text);
}

.prose-research h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #E2E8F0;
}

.prose-research p,
.prose-research li {
  color: var(--vv-text-muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.prose-research ul {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

.prose-research a {
  color: var(--vv-cyan-soft);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.prose-research a:hover {
  color: var(--vv-mint);
}

.cite-list {
  font-size: 0.875rem;
  color: var(--vv-text-muted);
}

.meta-byline {
  font-size: 0.8125rem;
  color: var(--vv-text-muted);
  border-left: 3px solid var(--vv-cyan);
  padding-left: 0.75rem;
}

.toc-card a {
  display: block;
  padding: 0.4rem 0;
  font-size: 0.875rem;
  color: var(--vv-text-muted);
}

.toc-card a:hover {
  color: var(--vv-cyan);
}

.breadcrumb a:hover {
  color: var(--vv-cyan);
}

.disclaimer {
  font-size: 0.75rem;
  line-height: 1.4;
}

.price {
  font-variant-numeric: tabular-nums;
}

/* ---------- Design system helpers ---------- */
.vv-gradient-text {
  background: linear-gradient(135deg, var(--vv-cyan) 0%, var(--vv-violet) 50%, var(--vv-mint) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.vv-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--vv-cyan);
}

.vv-swatch {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.85rem;
  border: 1px solid var(--vv-border);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.vv-cat-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  display: inline-block;
}

/* Soften amber educational boxes on dark */
.bg-amber-50 {
  background: rgba(168, 85, 247, 0.12) !important;
  border-color: rgba(168, 85, 247, 0.35) !important;
  color: #E9D5FF !important;
}

.text-amber-950,
.text-amber-900 {
  color: #F3E8FF !important;
}

.bg-emerald-50 {
  background: rgba(0, 255, 170, 0.08) !important;
  border-color: rgba(0, 255, 170, 0.25) !important;
}

/* Mobile menu */
#mobile-menu {
  background: rgba(15, 12, 41, 0.98) !important;
  border-color: var(--vv-border) !important;
}

#mobile-menu a {
  color: var(--vv-text-muted) !important;
}

/* Dropdown menus */
.group:hover .group-hover\:block {
  background: transparent;
}

.group .absolute .bg-white,
.group-hover\:block .bg-white {
  background: rgba(15, 12, 41, 0.95) !important;
  border-color: var(--vv-border) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.group .absolute a {
  color: var(--vv-text-muted) !important;
}

.group .absolute a:hover {
  background: rgba(0, 229, 255, 0.08) !important;
  color: var(--vv-cyan) !important;
}

/* ==========================================================================
   Signature components: Vial Cards, 3D Vial, Vault, Finder, Visual Calc
   ========================================================================== */

@keyframes vv-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes vv-pulse-glow {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 0.9; }
}
@keyframes vv-spin-y {
  from { transform: rotateY(0deg); }
  to { transform: rotateY(360deg); }
}
@keyframes vv-shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
@keyframes vv-vault-unlock {
  0% { transform: scale(0.9); opacity: 0; }
  60% { transform: scale(1.04); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* Energy by category */
.energy-tissue { --vv-energy: #F97316; --vv-energy-soft: rgba(249, 115, 22, 0.35); }
.energy-metabolic { --vv-energy: #22C55E; --vv-energy-soft: rgba(34, 197, 94, 0.35); }
.energy-gh { --vv-energy: #A855F7; --vv-energy-soft: rgba(168, 85, 247, 0.4); }
.energy-cosmetic { --vv-energy: #F472B6; --vv-energy-soft: rgba(244, 114, 182, 0.4); }
.energy-default { --vv-energy: #00E5FF; --vv-energy-soft: rgba(0, 229, 255, 0.35); }

/* ---- Vial Card ---- */
.vial-card {
  position: relative;
  border-radius: 1.75rem;
  background: linear-gradient(160deg, rgba(30, 27, 75, 0.75) 0%, rgba(15, 12, 41, 0.9) 100%);
  border: 1px solid rgba(248, 249, 250, 0.08);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.34, 1.2, 0.64, 1), border-color 0.25s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.vial-card::before {
  content: '';
  position: absolute;
  inset: -40% -20% auto;
  height: 70%;
  background: radial-gradient(ellipse at center, var(--vv-energy-soft, rgba(0,229,255,0.25)), transparent 65%);
  pointer-events: none;
  opacity: 0.7;
}
.vial-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: color-mix(in srgb, var(--vv-energy, #00E5FF) 50%, transparent);
  box-shadow: 0 0 40px var(--vv-energy-soft, rgba(0,229,255,0.2)), 0 20px 40px rgba(0,0,0,0.35);
}
.vial-stage {
  position: relative;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 600px;
}
.glass-vial {
  width: 72px;
  height: 140px;
  position: relative;
  transform-style: preserve-3d;
  animation: vv-float 5s ease-in-out infinite;
}
.glass-vial .vial-cap {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 34px; height: 12px;
  border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, #E2E8F0, #94A3B8);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
  z-index: 3;
}
.glass-vial .vial-neck {
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 18px; height: 18px;
  background: linear-gradient(90deg, rgba(255,255,255,0.08), rgba(0,229,255,0.2), rgba(255,255,255,0.08));
  border-left: 1px solid rgba(255,255,255,0.25);
  border-right: 1px solid rgba(255,255,255,0.25);
  z-index: 2;
}
.glass-vial .vial-body {
  position: absolute;
  top: 26px; left: 50%;
  transform: translateX(-50%);
  width: 56px; height: 100px;
  border-radius: 8px 8px 18px 18px;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(0,229,255,0.06) 40%, rgba(0,255,170,0.08) 100%);
  border: 1.5px solid rgba(255,255,255,0.28);
  box-shadow: inset 0 0 20px rgba(0,229,255,0.12), 0 8px 24px rgba(0,0,0,0.35);
  overflow: hidden;
  z-index: 1;
}
.glass-vial .vial-body::after {
  content: '';
  position: absolute;
  top: 8%; left: 12%;
  width: 18%; height: 55%;
  border-radius: 40px;
  background: linear-gradient(180deg, rgba(255,255,255,0.45), transparent);
  opacity: 0.5;
}
.glass-vial .vial-liquid {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 42%;
  background: linear-gradient(180deg, color-mix(in srgb, var(--vv-energy, #00E5FF) 70%, transparent), var(--vv-energy, #00E5FF));
  opacity: 0.55;
  box-shadow: 0 0 20px var(--vv-energy-soft, rgba(0,229,255,0.4));
}
.glass-vial .vial-wave {
  position: absolute;
  left: 10%; right: 10%;
  top: 48%;
  height: 16px;
  opacity: 0.9;
}
.glass-vial .vial-wave path {
  fill: none;
  stroke: #F8F9FA;
  stroke-width: 1.5;
  stroke-linecap: round;
}
.vial-card-body { padding: 0 1.25rem 1.35rem; position: relative; z-index: 1; flex: 1; display: flex; flex-direction: column; }
.vial-card .energy-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vv-energy, #00E5FF);
  margin-bottom: 0.35rem;
}
.vial-card h3 { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: -0.03em; margin: 0 0 0.4rem; }
.vial-card h3 a { color: var(--vv-text); text-decoration: none; }
.vial-card h3 a:hover { color: var(--vv-cyan); }
.vial-card .vial-meta { font-size: 0.8rem; color: var(--vv-text-muted); margin-bottom: 0.75rem; flex: 1; }
.vial-card .vial-footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 0.75rem; }
.vial-card .vial-price { font-family: var(--font-display); font-size: 1.65rem; letter-spacing: -0.03em; }

/* ---- Interactive 3D vial stage ---- */
.vial-3d-scene {
  perspective: 900px;
  width: 100%;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.vial-3d-scene .orbit-ring {
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 229, 255, 0.2);
  animation: vv-spin-y 24s linear infinite;
}
.vial-3d {
  width: 100px;
  height: 200px;
  position: relative;
  transform-style: preserve-3d;
  animation: vv-spin-y 14s linear infinite;
  cursor: grab;
}
.vial-3d:hover { animation-play-state: paused; }
.vial-3d .glass-vial { width: 100px; height: 200px; animation: none; }
.vial-3d .vial-cap { width: 48px; height: 16px; }
.vial-3d .vial-neck { width: 26px; height: 24px; top: 14px; }
.vial-3d .vial-body { width: 78px; height: 140px; top: 36px; border-radius: 12px 12px 26px 26px; }
.info-orbit {
  position: absolute;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(15, 12, 41, 0.75);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--vv-cyan);
  backdrop-filter: blur(8px);
}
.info-orbit.a { top: 12%; left: 4%; }
.info-orbit.b { top: 40%; right: 2%; }
.info-orbit.c { bottom: 18%; left: 8%; }

/* ---- Vial Vault ---- */
.vault-panel {
  max-width: 520px;
  margin: 0 auto;
  border-radius: 1.75rem;
  padding: 2rem;
  background: linear-gradient(160deg, rgba(30,27,75,0.9), rgba(15,12,41,0.95));
  border: 1px solid rgba(0, 229, 255, 0.2);
  box-shadow: 0 0 60px rgba(0, 229, 255, 0.08);
  position: relative;
  overflow: hidden;
}
.vault-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,255,170,0.12), transparent 55%);
  pointer-events: none;
}
.vault-lock {
  width: 88px; height: 88px;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  border: 2px solid rgba(0, 229, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--vv-cyan);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.2);
  transition: all 0.4s ease;
}
.vault-lock.unlocked {
  border-color: var(--vv-mint);
  color: var(--vv-mint);
  box-shadow: 0 0 40px rgba(0, 255, 170, 0.35);
  animation: vv-vault-unlock 0.55s ease;
}
.vault-verified {
  display: none;
  text-align: center;
  animation: vv-vault-unlock 0.5s ease;
}
.vault-verified.show { display: block; }
.vault-verified .badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  background: linear-gradient(135deg, rgba(0,255,170,0.2), rgba(0,229,255,0.2));
  border: 1px solid rgba(0, 255, 170, 0.5);
  color: var(--vv-mint);
  text-transform: uppercase;
}

/* ---- Vibe Finder ---- */
.vibe-option {
  cursor: pointer;
  border-radius: 1.25rem;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(30, 27, 75, 0.5);
  padding: 1.25rem;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
  color: inherit;
}
.vibe-option:hover, .vibe-option.selected {
  border-color: rgba(0, 229, 255, 0.45);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.12);
}
.vibe-option.selected { outline: 1px solid rgba(0, 255, 170, 0.4); }

/* ---- Visual beaker calculator ---- */
.beaker-stage {
  position: relative;
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  height: 280px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.beaker {
  width: 140px;
  height: 220px;
  position: relative;
}
.beaker-glass {
  position: absolute;
  inset: 0;
  border: 2px solid rgba(255,255,255,0.28);
  border-top: none;
  border-radius: 0 0 28px 28px;
  background: linear-gradient(90deg, rgba(255,255,255,0.06), rgba(0,229,255,0.05));
  overflow: hidden;
  box-shadow: inset 0 0 30px rgba(0,229,255,0.1), 0 12px 40px rgba(0,0,0,0.3);
}
.beaker-rim {
  position: absolute;
  top: -8px; left: -10px; right: -10px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 8px;
  background: rgba(30, 27, 75, 0.8);
}
.beaker-fill {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 0%;
  background: linear-gradient(180deg, rgba(0,255,170,0.55), rgba(0,229,255,0.75));
  transition: height 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
  box-shadow: 0 0 30px rgba(0, 255, 170, 0.35);
}
.beaker-fill::before {
  content: '';
  position: absolute;
  top: -6px; left: 0; right: 0;
  height: 12px;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.35), transparent 70%);
  animation: vv-pulse-glow 2.5s ease-in-out infinite;
}
.beaker-label {
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--vv-cyan);
  white-space: nowrap;
}
.calc-btn.active {
  background: linear-gradient(135deg, #00E5FF, #00FFAA) !important;
  color: #0F0C29 !important;
  border-color: transparent !important;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}

/* Library filters */
.library-filter {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  background: transparent;
  color: var(--vv-text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.library-filter:hover, .library-filter.active {
  color: #0F0C29;
  background: linear-gradient(135deg, #00E5FF, #00FFAA);
  border-color: transparent;
}

/* Particles backdrop */
.vv-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.vv-particles span {
  position: absolute;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: #00E5FF;
  opacity: 0.35;
  animation: vv-float 6s ease-in-out infinite;
}