/* glideCast — Premium dark theme
   Palette: deep navy, ice white, glacier blue, arctic teal, warm amber
   Wax product colors preserved: Turquoise, Blue, Violet, Red, Yellow */

:root {
  /* Primary palette */
  --navy: #0a0f1e;
  --ice: #f0f4ff;
  --glacier: #3b82f6;
  --teal: #0d9488;
  --amber: #f59e0b;
  /* Hero gradient */
  --navy-light: #0d1a3a;
  /* Frosted glass */
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-nav: rgba(10, 15, 30, 0.85);
  /* Form */
  --input-bg: #111827;
  --input-border: rgba(255, 255, 255, 0.12);
  --focus-ring: #3b82f6;
  /* Sacred wax product colors — do not change */
  --wax-turquoise: #1bb3c8;
  --wax-blue: #2563eb;
  --wax-violet: #7c3aed;
  --wax-red: #dc2626;
  --wax-yellow: #f59e0b;
}

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

/* Trademark (™) and service mark (℠) — superscript, inherit color, avoid clipping */
sup.mark-tm,
sup.mark-sm {
  font-size: 0.65em;
  line-height: 0;
  font-weight: inherit;
  font-style: inherit;
  color: inherit;
  vertical-align: super;
  position: relative;
  top: -0.02em;
  white-space: nowrap;
}

/* Site footer */
.site-footer {
  position: relative;
  z-index: 50;
  margin-top: 3rem;
  padding: 1.5rem 1.5rem 2rem;
  border-top: 1px solid var(--glass-border);
  background: rgba(10, 15, 30, 0.5);
}

.site-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.site-footer-legal {
  margin: 0 0 0.75rem 0;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--ice);
  opacity: 0.65;
}

.site-footer-links {
  margin: 0;
  font-size: 0.8125rem;
}

.site-footer-links a {
  color: var(--glacier);
}

.page-paywall .site-footer {
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
}

.page-paywall .site-footer-legal {
  color: #475569;
  opacity: 1;
}

.page-paywall .site-footer-links a {
  color: #1e40af;
}

.hero-brand-kicker {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.75;
  margin: 0 0 0.35rem 0;
  color: var(--ice);
}

.page-calculator .hero-brand-kicker,
.page-results .hero-brand-kicker {
  color: var(--ice);
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--navy);
  color: var(--ice);
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Above snow layer (z-index 1); nav uses 100 */
main {
  position: relative;
  z-index: 2;
}

/* Calculator (pick parameters): full-page mountain photo */
body.page-calculator {
  background-color: var(--navy);
  background-image: url('../img/mountains.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: scroll;
}

@media (min-width: 768px) {
  body.page-calculator {
    background-attachment: fixed;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.page-calculator {
    background-attachment: scroll;
  }
}

/* Calculator: dark hero + black UI panels so content doesn’t blend into the mountain photo */
.page-calculator .hero-premium::before {
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.92) 100%
  );
  animation: none;
}

.page-calculator .nav-sticky {
  background: rgba(0, 0, 0, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.page-calculator .nav-links a,
.page-calculator .nav-links button {
  background: rgba(0, 0, 0, 0.72);
  border-color: rgba(255, 255, 255, 0.14);
}

.page-calculator .card-glass {
  background: rgba(0, 0, 0, 0.92);
  border-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-calculator .card-glass:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7);
}

.page-calculator .card-glass .card-glass {
  background: rgba(0, 0, 0, 0.78);
  border-color: rgba(255, 255, 255, 0.1);
}

.page-calculator .input-dark,
.page-calculator select.input-dark,
.page-calculator input[type="text"].input-dark,
.page-calculator input[type="password"].input-dark,
.page-calculator input[type="email"].input-dark,
.page-calculator input[type="date"].input-dark,
.page-calculator input[type="time"].input-dark {
  background: #000000;
  border-color: rgba(255, 255, 255, 0.2);
}

.page-calculator select.input-dark option {
  background: #0a0a0a;
  color: var(--ice);
}

.page-calculator .msg {
  background: rgba(0, 0, 0, 0.9);
  border-color: rgba(255, 255, 255, 0.12);
}

.page-calculator .msg.error {
  background: rgba(26, 18, 6, 0.96);
  border-color: rgba(245, 158, 11, 0.45);
}

/* Results: Sugarloaf venue photo — top right of main content */
.results-page-wrap {
  position: relative;
}

.results-venue-image {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 3;
  max-width: min(240px, 42vw);
  max-height: 180px;
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.results-venue-image img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 180px;
  object-fit: cover;
}

@media (min-width: 720px) {
  .results-page-wrap--has-venue-img .scroll-anim-header.section-header {
    padding-right: min(260px, 38vw);
  }
}

@media (max-width: 719px) {
  .results-venue-image {
    max-width: min(132px, 36vw);
    max-height: 99px;
  }

  .results-venue-image img {
    max-height: 99px;
  }

  .results-page-wrap--has-venue-img .scroll-anim-header.section-header {
    padding-right: min(144px, 40vw);
  }
}

/* Typography */
.text-page-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.text-section-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.text-data,
.wax-value {
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 800;
}

.text-label,
.text-caption {
  font-weight: 400;
  opacity: 0.6;
}

/* Sticky nav — frosted glass */
.nav-sticky {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ice);
  transition: opacity 0.2s ease;
}

.nav-logo:hover {
  opacity: 0.9;
}

.nav-logo-img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
}

.patent-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.65rem;
  border-radius: 9999px;
  border: 1px solid rgba(245, 158, 11, 0.55);
  background: rgba(245, 158, 11, 0.16);
  color: #fcd34d;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.auth-brand-mark {
  text-align: center;
  margin-bottom: 1rem;
}

.auth-brand-mark img {
  height: 64px;
  width: auto;
  display: inline-block;
  vertical-align: middle;
  object-fit: contain;
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-icon svg {
  width: 20px;
  height: 20px;
  color: var(--glacier);
}

.nav-logo-title {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1rem;
}

.nav-logo-sub {
  font-size: 0.75rem;
  opacity: 0.6;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 768px) {
  .nav-inner {
    flex-wrap: wrap;
    justify-content: center;
  }

  .patent-badge {
    order: 3;
  }
}

.nav-links a,
.nav-links button {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--ice);
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links button:hover {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
  background: var(--glacier) !important;
  border-color: var(--glacier) !important;
}

.nav-cta:hover {
  filter: brightness(1.1);
}

/* Hero — full-width dark with animated gradient */
.hero-premium {
  width: 100%;
  padding: 3rem 1.5rem 4rem;
  position: relative;
  z-index: 2;
  overflow: hidden;
}

.hero-premium::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, var(--navy-light) 0%, var(--navy) 50%);
  animation: hero-gradient 8s ease-in-out infinite;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .hero-premium::before {
    animation: none;
  }
}

@keyframes hero-gradient {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
}

.hero-title {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin: 0 0 0.25rem 0;
  color: var(--ice);
}

.hero-subtitle {
  font-size: 1rem;
  opacity: 0.6;
  margin: 0;
}

/* Page load stagger — hero content */
.hero-stagger-1 { animation: fadeIn 0.4s ease both; }
.hero-stagger-2 { animation: fadeIn 0.4s ease 0.15s both; }
.hero-stagger-3 { animation: fadeIn 0.4s ease 0.3s both; }
.hero-stagger-4 { animation: fadeIn 0.4s ease 0.45s both; }

@media (prefers-reduced-motion: reduce) {
  .hero-stagger-1, .hero-stagger-2, .hero-stagger-3, .hero-stagger-4 {
    animation: none;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Frosted glass card */
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  transition: all 0.2s ease;
  will-change: transform, opacity;
}

.card-glass:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

@media (prefers-reduced-motion: reduce) {
  .card-glass:hover {
    transform: none;
  }
}

/* Wax color pill — glow on hover (sacred colors preserved) */
.wax-pill {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.875rem;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.wax-pill:hover {
  box-shadow: 0 0 20px currentColor;
}

.wax-pill[data-color="turquoise"] { background: var(--wax-turquoise); color: #0a0f1e; }
.wax-pill[data-color="blue"]     { background: var(--wax-blue);     color: #fff; }
.wax-pill[data-color="violet"]   { background: var(--wax-violet);   color: #fff; }
.wax-pill[data-color="red"]     { background: var(--wax-red);     color: #fff; }
.wax-pill[data-color="yellow"]  { background: var(--wax-yellow);  color: #0a0f1e; }

/* Summary strip wax pill pulse when in viewport */
.wax-pill-pulse {
  animation: wax-pulse 2s ease-in-out;
}

@media (prefers-reduced-motion: reduce) {
  .wax-pill-pulse {
    animation: none;
  }
}

@keyframes wax-pulse {
  0%, 100% { box-shadow: 0 0 0 0 currentColor; }
  50% { box-shadow: 0 0 24px 4px currentColor; }
}

/* Form inputs — dark with blue focus ring */
.input-dark,
select.input-dark,
input[type="text"].input-dark,
input[type="password"].input-dark,
input[type="email"].input-dark,
input[type="date"].input-dark,
input[type="time"].input-dark {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--ice);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.input-dark:focus,
select.input-dark:focus {
  outline: none;
  border-color: var(--focus-ring);
  box-shadow: 0 0 0 2px var(--focus-ring);
}

.input-dark::placeholder {
  color: var(--ice);
  opacity: 0.4;
}

select.input-dark option {
  background: var(--navy);
  color: var(--ice);
}

.input-wrap {
  margin-bottom: 1rem;
}

.input-wrap label {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.6;
  margin-bottom: 0.35rem;
}

/* Checkbox dark */
.input-check-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
}

.input-check-wrap input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--glacier);
  cursor: pointer;
}

/* Primary button — glacier blue with shimmer on hover */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.875rem 1.5rem;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: #fff;
  background: var(--glacier);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  filter: brightness(1.1);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.15),
    transparent
  );
  transition: left 0.5s ease;
}

.btn-primary:hover::after {
  left: 100%;
}

@media (prefers-reduced-motion: reduce) {
  .btn-primary::after {
    display: none;
  }
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--ice);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  border-radius: 12px;
  text-decoration: none;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
}

/* Range slider — teal track, white thumb */
input[type="range"].slider-teal {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--input-bg);
  outline: none;
}

input[type="range"].slider-teal::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ice);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: transform 0.2s ease;
}

input[type="range"].slider-teal::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--teal) 0%, var(--teal) var(--range-fill, 50%), var(--input-bg) var(--range-fill, 50%));
}

input[type="range"].slider-teal::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ice);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  border: none;
}

input[type="range"].slider-teal::-moz-range-track {
  height: 8px;
  border-radius: 4px;
  background: var(--input-bg);
}

/* Loading spinner — CSS arc, glacier blue */
.spinner-arc {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--glacier);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .spinner-arc {
    animation: none;
    border-top-color: var(--glacier);
  }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Chart container — keep Plotly inner background #fff */
.chart-container {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1rem;
  overflow: hidden;
}

.chart-container .plotly,
.chart-container .js-plotly-plot,
.chart-container iframe {
  background: #ffffff !important;
}

/* Messages */
.msg-list {
  margin-bottom: 1.5rem;
}

.msg {
  padding: 0.75rem 1rem;
  border-radius: 12px;
  font-size: 0.875rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  margin-bottom: 0.5rem;
}

.msg.error {
  border-color: rgba(245, 158, 11, 0.5);
  background: rgba(245, 158, 11, 0.08);
  color: var(--amber);
}

/* Main content area */
.main-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

/* Scroll-in animations: initial state, then .is-visible */
.scroll-anim-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
  will-change: transform, opacity;
}

.scroll-anim-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-anim-chart {
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  will-change: transform, opacity;
}

.scroll-anim-chart.is-visible {
  opacity: 1;
  transform: scale(1);
}

.scroll-anim-header {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
  will-change: transform, opacity;
}

.scroll-anim-header.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.scroll-anim-summary {
  opacity: 0;
  transition: opacity 0.5s ease-out;
  will-change: opacity;
}

.scroll-anim-summary.is-visible {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .scroll-anim-card,
  .scroll-anim-chart,
  .scroll-anim-header,
  .scroll-anim-summary {
    opacity: 1;
    transform: none;
    transition: none;
    will-change: auto;
  }
}

/* Paywall landing: science credibility (slide / fade) */
.scroll-anim-slide-left {
  opacity: 0;
  transform: translateX(-36px);
  transition: opacity 0.65s ease-out, transform 0.65s ease-out;
  will-change: transform, opacity;
}

.scroll-anim-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.scroll-anim-fade-right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
  will-change: transform, opacity;
}

.scroll-anim-fade-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

@media (prefers-reduced-motion: reduce) {
  .scroll-anim-slide-left,
  .scroll-anim-slide-left.is-visible,
  .scroll-anim-fade-right,
  .scroll-anim-fade-right.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
    will-change: auto;
  }
}

.section-full-bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  box-sizing: border-box;
}

.paywall-features {
  margin-bottom: 2.5rem;
}

.paywall-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

@media (max-width: 900px) {
  .paywall-features-grid {
    grid-template-columns: 1fr;
  }
}

.paywall-feature-card {
  padding: 1.25rem;
  border-radius: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.paywall-feature-card h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ice);
}

.paywall-feature-card p {
  margin: 0;
  font-size: 0.875rem;
  opacity: 0.72;
  line-height: 1.5;
}

.science-credibility-section {
  background: #0f172a;
  padding: 3.5rem 1.5rem;
  margin-bottom: 2.5rem;
  border-top: 1px solid rgba(56, 189, 248, 0.12);
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
}

.science-credibility-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.science-credibility-heading {
  font-size: clamp(1.35rem, 3.5vw, 1.85rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #f0f9ff;
  margin: 0 0 2rem 0;
  text-align: center;
}

.science-credibility-grid {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .science-credibility-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.science-credential-card {
  padding: 1.75rem;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(56, 189, 248, 0.22);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.science-credential-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: #f0f9ff;
  margin: 0 0 0.35rem 0;
  line-height: 1.2;
}

.science-credential-name a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 189, 248, 0.45);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.science-credential-name a:hover {
  color: #38bdf8;
  border-bottom-color: #38bdf8;
}

.science-credential-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(240, 249, 255, 0.88);
  margin: 0 0 1.25rem 0;
  line-height: 1.45;
}

.science-credential-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(240, 249, 255, 0.45);
  margin: 0 0 0.4rem 0;
}

.science-credential-degrees {
  font-size: 0.8125rem;
  line-height: 1.55;
  color: rgba(240, 249, 255, 0.78);
  margin: 0 0 1.25rem 0;
}

.science-expertise-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.science-expertise-pill {
  display: inline-block;
  padding: 0.35rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #bae6fd;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.28);
}

.science-credibility-copy {
  color: #f0f9ff;
}

.science-credibility-copy p {
  margin: 0 0 1rem 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: #f0f9ff;
  opacity: 0.94;
}

.science-pull-quote {
  margin: 0 0 1.35rem 0;
  padding: 0;
  border: none;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.45;
  color: #38bdf8;
  letter-spacing: 0.01em;
}

.science-cta-row {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

@media (min-width: 520px) {
  .science-cta-row {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: stretch;
  }
}

.science-research-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border-radius: 12px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #0f172a;
  background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
  text-decoration: none;
  border: none;
  box-shadow: 0 8px 28px rgba(56, 189, 248, 0.25);
  transition: filter 0.2s ease, transform 0.2s ease;
}

.science-research-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

@media (prefers-reduced-motion: reduce) {
  .science-research-btn:hover {
    transform: none;
  }
}

.science-dartmouth-linkcard {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  border-radius: 14px;
  border: 1px solid #38bdf8;
  background: rgba(56, 189, 248, 0.06);
  text-decoration: none;
  color: #f0f9ff;
  transition: background 0.2s ease, border-color 0.2s ease;
  flex: 1;
  min-width: min(100%, 220px);
}

.science-dartmouth-linkcard:hover {
  background: rgba(56, 189, 248, 0.12);
  border-color: #7dd3fc;
}

.science-dartmouth-linkcard-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: left;
}

.science-dartmouth-linkcard-name {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #f0f9ff;
}

.science-dartmouth-linkcard-sub {
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.65;
}

.science-external-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  opacity: 0.85;
}

.paywall-pricing-block {
  margin-top: 0.5rem;
}

/* Section header */
.section-header {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

/* Grid of cards — stagger 80ms per card */
.runs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.runs-grid .scroll-anim-card:nth-child(1) { transition-delay: 0ms; }
.runs-grid .scroll-anim-card:nth-child(2) { transition-delay: 80ms; }
.runs-grid .scroll-anim-card:nth-child(3) { transition-delay: 160ms; }
.runs-grid .scroll-anim-card:nth-child(4) { transition-delay: 240ms; }
.runs-grid .scroll-anim-card:nth-child(5) { transition-delay: 320ms; }
.runs-grid .scroll-anim-card:nth-child(6) { transition-delay: 400ms; }

@media (max-width: 768px) {
  .runs-grid {
    grid-template-columns: 1fr;
  }
  .main-inner [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}

/* Data value emphasis */
.data-value {
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--ice);
}

/* Alert / highlight */
.alert-amber {
  color: var(--amber);
  border-color: rgba(245, 158, 11, 0.4);
}

/* —— Subscribe landing: light, editorial (no glass / snow / motion gimmicks) —— */
.page-paywall {
  background: #ffffff;
  color: #1e293b;
}

.page-paywall #snow-container {
  display: none !important;
}

.page-paywall .nav-sticky {
  background: #ffffff;
  border-bottom: 1px solid #e2e8f0;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.page-paywall .nav-logo {
  color: #0f172a;
}

.page-paywall .patent-badge {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #64748b;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.page-paywall .nav-links a,
.page-paywall .nav-links button {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #334155;
  border-radius: 6px;
}

.page-paywall .nav-links a:hover,
.page-paywall .nav-links button:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

.page-paywall .nav-cta {
  background: #1e3a5f !important;
  border-color: #1e3a5f !important;
  color: #ffffff !important;
}

.page-paywall .nav-cta:hover {
  filter: none;
  background: #172554 !important;
  border-color: #172554 !important;
}

.page-paywall main {
  background: #ffffff;
}

.page-paywall .main-inner {
  padding-top: 2rem;
  padding-bottom: 4rem;
}

.page-paywall .msg {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #334155;
}

.page-paywall .msg.error {
  background: #fffbeb;
  border-color: #fcd34d;
  color: #92400e;
}

/* Hero */
.paywall-hero {
  width: 100%;
  padding: 2.25rem 1.5rem 2rem;
  background: linear-gradient(135deg, #00461F 0%, #00693E 50%, #008550 100%);
  border-bottom: 1px solid #00461F;
}

.paywall-hero-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.paywall-hero-brand {
  margin: 0 0 0.2rem 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #ffffff;
}

.paywall-hero-slogan {
  margin: 0 0 1rem 0;
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.45;
}

.paywall-hero-title {
  margin: 0 0 0.35rem 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.paywall-hero-lead {
  margin: 0;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.5;
}

.page-paywall .paywall-features-services {
  margin: 0 0 1rem 0;
  max-width: 44rem;
  font-size: 0.875rem;
  line-height: 1.55;
  color: #475569;
}

/* Features + sections */
.page-paywall .paywall-section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0;
  letter-spacing: -0.01em;
}

.page-paywall .paywall-section-lead {
  margin: 0.5rem 0 0 0;
  max-width: 40rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: #64748b;
}

.page-paywall .paywall-feature-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}

.page-paywall .paywall-feature-card h3 {
  color: #0f172a;
  font-size: 0.9375rem;
}

.page-paywall .paywall-feature-card p {
  color: #475569;
  opacity: 1;
  font-size: 0.875rem;
}

/* Science band — light, readable */
.page-paywall .science-credibility-section {
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
  padding: 2.75rem 1.5rem;
  margin-bottom: 2rem;
}

.page-paywall .science-credibility-heading {
  color: #0f172a;
  text-align: left;
  font-weight: 700;
  margin-bottom: 1.75rem;
}

.page-paywall .science-credential-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  box-shadow: none;
}

.page-paywall .science-credential-name {
  color: #0f172a;
  font-weight: 700;
  font-size: 1.125rem;
}

.page-paywall .science-credential-name a {
  border-bottom-color: #cbd5e1;
  color: #0f172a;
}

.page-paywall .science-credential-name a:hover {
  color: #1e40af;
  border-bottom-color: #1e40af;
}

.page-paywall .science-credential-title {
  color: #475569;
  font-weight: 500;
}

.page-paywall .science-credential-label {
  color: #64748b;
}

.page-paywall .science-credential-degrees {
  color: #334155;
}

.page-paywall .science-expertise-pill {
  color: #334155;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
}

.page-paywall .science-credibility-copy {
  color: #334155;
}

.page-paywall .science-credibility-copy p {
  color: #334155;
  opacity: 1;
}

.page-paywall .science-pull-quote {
  color: #0f172a;
  font-weight: 600;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  border-left: 3px solid #1e40af;
  padding-left: 1rem;
  margin-left: 0;
}

.page-paywall .paywall-text-link {
  color: #1e40af;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-paywall .paywall-text-link:hover {
  color: #172554;
}

.page-paywall .science-research-btn {
  background: #1e3a5f;
  color: #ffffff;
  border-radius: 6px;
  box-shadow: none;
  font-weight: 600;
}

.page-paywall .science-research-btn:hover {
  filter: none;
  background: #172554;
  transform: none;
}

.page-paywall .science-dartmouth-linkcard {
  border: 1px solid #cbd5e1;
  background: #ffffff;
  border-radius: 8px;
  color: #0f172a;
}

.page-paywall .science-dartmouth-linkcard:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

.page-paywall .science-dartmouth-linkcard-name {
  color: #0f172a;
  font-weight: 700;
}

.page-paywall .science-dartmouth-linkcard-sub {
  color: #64748b;
  opacity: 1;
}

.page-paywall .science-external-icon {
  color: #64748b;
}

/* Pricing */
.page-paywall .paywall-billing-row {
  margin-bottom: 1.25rem;
}

.page-paywall .paywall-billing-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #475569;
}

.page-paywall .paywall-select {
  padding: 0.4rem 0.65rem;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #0f172a;
  font-family: inherit;
  font-size: 0.875rem;
}

.page-paywall .paywall-plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  align-items: start;
}

.page-paywall .paywall-plan-card {
  padding: 1.25rem;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.page-paywall .paywall-plan-name {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
  margin: 0 0 0.35rem 0;
  font-weight: 600;
}

.page-paywall .paywall-plan-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 0.5rem 0;
}

.page-paywall .paywall-plan-desc {
  margin: 0 0 1rem 0;
  min-height: 2.5rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: #64748b;
}

.page-paywall .paywall-cta {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #ffffff;
  background: #1e3a5f;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
  box-sizing: border-box;
}

.page-paywall .paywall-cta:hover {
  background: #172554;
  color: #ffffff;
}

.page-paywall .paywall-account-link-wrap {
  margin-top: 1rem;
  font-size: 0.875rem;
}

.page-paywall .btn-secondary.alert-amber {
  margin-top: 1rem;
  background: #ffffff;
  border: 1px dashed #cbd5e1;
  color: #92400e;
}

/* Dr. Osterberg photo — in document flow (scrolls); source: Photos/Erich Osterberg.png via static */
.page-paywall .paywall-erich-photo-wrap {
  margin-top: 2.5rem;
  display: flex;
  justify-content: flex-start;
}

.page-paywall .paywall-erich-photo {
  margin: 0;
  max-width: min(240px, 55vw);
}

.page-paywall .paywall-erich-photo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  background: #f1f5f9;
}

/* Founders section */
.paywall-founders-section {
  margin-top: 3rem;
  padding: 2.5rem 0;
  border-top: 1px solid #e2e8f0;
}

.paywall-founders-inner {
  max-width: 860px;
}

.paywall-founders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (max-width: 640px) {
  .paywall-founders-grid {
    grid-template-columns: 1fr;
  }
}

.paywall-founder-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1.5rem;
}

.paywall-founder-name {
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.2rem;
  color: #0f172a;
}

.paywall-founder-role {
  font-size: 0.85rem;
  color: #64748b;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.paywall-founder-quote {
  font-style: italic;
  color: #1e40af;
  border-left: 3px solid #3b82f6;
  padding-left: 0.75rem;
  margin: 0 0 1rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.paywall-founder-bio {
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.6;
  margin: 0;
}