/* Section-specific styles — Quibbl hero redesign */

html, body {
  background: var(--bg-bot);
  color: var(--fg);
  font-feature-settings: "ss01", "cv11";
}

/* Page-wide vignette to match hero fade */
body {
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.55) 85%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bot) 100%);
  min-height: 100vh;
}

/* Subtle film grain — kept, lighter */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  mix-blend-mode: overlay;
}

/* --- Waves canvas --- */
.waves-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Hero legibility overlay over waves */
.hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(70% 60% at 50% 35%,
    rgba(11, 14, 20, 0) 0%,
    rgba(11, 14, 20, 0.55) 70%,
    rgba(11, 14, 20, 0.85) 100%);
}

#site { position: relative; z-index: 5; }

/* --- Hero --- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 2rem) var(--container-padding) 3rem;
  overflow: hidden;
}

.hero .container {
  position: relative;
  z-index: 2;
  max-width: 980px;
  display: flex;
  justify-content: center;
}

.hero__content {
  width: 100%;
  max-width: 980px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0;
}

.hero__problem {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  margin-top: 1.75rem;
  line-height: 1.6;
  max-width: 620px;
  text-wrap: balance;
}

.hero__headline {
  font-family: var(--font-heading);
  font-size: var(--font-size-hero);
  line-height: 0.98;
  letter-spacing: var(--letter-spacing-tight);
  font-weight: 500;
  color: var(--fg);
  margin: 1.75rem 0 0;
  max-width: 980px;
  text-wrap: balance;
}

.hero__accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.02em;
  padding-right: 0.06em;
  background-image: linear-gradient(100deg,
    var(--accent-a) 0%,
    var(--accent-b) 55%,
    var(--fg) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__body {
  font-size: clamp(0.95rem, 1.22vw, 1.2rem);
  line-height: 1.55;
  color: var(--fg-dim);
  max-width: 640px;
  margin: 1.6rem 0 0;
  text-wrap: pretty;
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 2rem;
}

.hero__creds {
  margin-top: 1.75rem;
}

/* Metric ticker strip — sits under hero, above the next section */
.metric-ticker {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.28) 100%);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.metric {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  border-right: 1px solid var(--line);
}
.metric:last-child { border-right: none; }

.metric__label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.metric__hint {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.metric__hint-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-a);
  box-shadow: 0 0 8px var(--accent-a);
  animation: qpulse 1.6s ease-in-out infinite;
}

.metric__value {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--fg);
  display: inline-block;
  transform: translateY(0);
  opacity: 1;
  transition: transform 180ms cubic-bezier(.2,.7,.2,1), opacity 180ms ease;
}

.metric__value.is-out {
  transform: translateY(6px);
  opacity: 0;
}

@media (max-width: 820px) {
  .metric-ticker { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: none; }
  .metric:nth-child(1),
  .metric:nth-child(2) { border-bottom: 1px solid var(--line); }
  .metric__value { font-size: 1.5rem; }
}

@media (max-width: 420px) {
  .metric-ticker { grid-template-columns: 1fr; }
  .metric { border-right: none; border-bottom: 1px solid var(--line); }
  .metric:last-child { border-bottom: none; }
}

/* --- Shared section rhythm --- */
.section {
  position: relative;
  padding: var(--space-3xl) 0;
}

@media (max-width: 768px) {
  .section { padding: var(--space-xl) 0; }
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 3.8vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 1rem;
  text-wrap: balance;
}

.section__subtitle {
  font-size: 1rem;
  color: var(--fg-dim);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto;
  text-wrap: pretty;
}

/* Section backgrounds — solid enough to mask the fixed waves canvas below */
.problem,
.platform,
.how-it-works,
.architecture {
  background: var(--bg-bot);
  padding: var(--space-2xl) 0;
  position: relative;
}

/* Thin hairline between sections */
.problem::before,
.platform::before,
.how-it-works::before,
.architecture::before,
.cta-banner::before {
  content: '';
  position: absolute;
  left: var(--container-padding);
  right: var(--container-padding);
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  pointer-events: none;
}

@media (max-width: 768px) {
  .problem,
  .platform,
  .how-it-works,
  .architecture { padding: var(--space-xl) 0; }
}

/* --- Platform (managed) — card-hero removed; flat 2-col grid --- */
.card--hero {
  grid-column: 1 / -1;
}

.card--hero .card__title {
  font-size: 1.5rem;
}

/* --- Architecture lead (platforms section) --- */
.architecture .section__header { margin-bottom: var(--space-lg); }

.architecture__lead {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--fg);
  text-align: center;
  max-width: 700px;
  margin: 0 auto 0.9rem;
}

.architecture__quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--fg-dim);
  text-align: center;
  margin: 0 auto var(--space-lg);
  max-width: 560px;
}

/* --- CTA Banner — inverted, accent gradient --- */
.cta-banner {
  position: relative;
  padding: var(--space-2xl) 0;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(60% 80% at 20% 30%, color-mix(in oklab, var(--accent-a) 22%, transparent) 0%, transparent 60%),
    radial-gradient(50% 80% at 85% 70%, color-mix(in oklab, var(--accent-b) 22%, transparent) 0%, transparent 55%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.55) 100%);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.cta-banner__headline {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--fg);
  margin-bottom: 1rem;
  position: relative;
  text-wrap: balance;
}

.cta-banner__trust {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.55;
  margin: 0 auto 1.5rem;
  max-width: 620px;
  position: relative;
}

.cta-banner .btn { position: relative; }

.cta-banner__sub {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-top: 1.25rem;
  position: relative;
}

@media (max-width: 768px) {
  .cta-banner { padding: var(--space-xl) 0; }
}

/* --- Footer --- */
.footer {
  background: var(--bg-bot);
  border-top: 1px solid var(--line);
  padding: var(--space-2xl) 0 var(--space-lg);
  position: relative;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2.5fr 1fr 1fr 1fr; }
}

.footer__brand-name {
  font-size: 1.1rem;
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 0.25rem;
}

.footer__brand-tagline {
  color: var(--fg-dim);
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

.footer__socials {
  display: flex;
  gap: 0.5rem;
}

.footer__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  color: var(--fg-faint);
  transition: color var(--transition-fast), border-color var(--transition-fast),
              background var(--transition-fast);
}

.footer__social:hover {
  color: var(--fg);
  border-color: var(--line-strong);
  background: var(--pill-bg);
}

.footer__heading {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-faint);
  margin-bottom: 0.85rem;
}

.footer__link {
  display: block;
  font-size: 0.88rem;
  color: var(--fg-dim);
  padding: 0.2rem 0;
  transition: color var(--transition-fast);
}
.footer__link:hover { color: var(--fg); }

.footer__bottom {
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.footer__bottom-sep { opacity: 0.4; }

.footer__bottom-link {
  color: var(--fg-faint);
  transition: color var(--transition-fast);
}
.footer__bottom-link:hover { color: var(--fg-dim); }

/* --- Responsive hero tweaks --- */
@media (max-width: 640px) {
  .hero__actions { flex-direction: column; width: 100%; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
}