/**
 * NADIR — Stripe-inspired polish layer
 * Clean hierarchy, generous rhythm, refined surfaces (dark theme).
 * Load after nadir-premium.css on every page.
 */

/* ─── Global page rhythm (Stripe-like clarity) ─── */
body.nadir-site:not(.nadir-home) {
  font-feature-settings: "kern" 1, "liga" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(ellipse 60% 40% at 12% -8%, rgba(255, 90, 42, 0.1), transparent 50%),
    radial-gradient(ellipse 50% 35% at 88% 0%, rgba(255, 154, 82, 0.07), transparent 45%),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(255, 43, 43, 0.05), transparent 50%),
    var(--bg);
}

body.nadir-site main,
body.nadir-site .deck-main {
  padding-top: var(--header-h, 72px);
}

/* ─── Typography scale ─── */
body.nadir-site h1 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text);
}

body.nadir-site .hero h1,
body.nadir-site .vl-hero h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
}

body.nadir-site .hero .lead,
body.nadir-site .section-desc,
body.nadir-site .vl-section-desc {
  font-size: clamp(1rem, 1.35vw, 1.125rem);
  line-height: 1.65;
  color: var(--text2);
  max-width: 62ch;
}

body.nadir-site .eyebrow,
body.nadir-site .vl-eyebrow {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--nadir-magma-400);
}

/* Gradient headline — magma + white (slow flow; faster on hover) */
@keyframes nadir-gradient-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.nadir-gradient-text,
.stripe-gradient-text,
body.nadir-home h1 .accent {
  background: linear-gradient(
    90deg,
    #f3f5f7,
    #fff0d4,
    #ffb14a,
    #ff8c42,
    #ff6d2e,
    #db4722,
    #e8a060,
    #f3f5f7
  );
  background-size: 280% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
  animation: nadir-gradient-flow 14s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .nadir-gradient-text,
  .stripe-gradient-text,
  body.nadir-home h1 .accent {
    animation: none;
    background: var(--nadir-gradient-display);
    background-size: 100% 100%;
  }
}

/* Official logo mark (nav + site header) */
.nadir-logo-img,
.site-header .brand-logo,
.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--nadir-logo-border);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.35) inset,
    0 6px 18px rgba(230, 0, 92, 0.18);
  background: #060708;
  flex-shrink: 0;
}

.nav-logo:hover .nadir-logo-img,
.site-header .brand:hover .brand-logo {
  border-color: rgba(255, 215, 0, 0.55);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.35) inset,
    0 8px 22px rgba(255, 122, 0, 0.28);
}

/* ─── Header — single chrome everywhere ─── */
.site-header {
  background: rgba(6, 7, 8, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.site-header .nav-link,
.site-header .nav-dropdown-toggle {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.site-header .nav-link.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.site-header .btn-primary {
  background: linear-gradient(180deg, var(--nadir-magma-500) 0%, var(--nadir-magma-700) 100%);
  border: 1px solid rgba(253, 186, 116, 0.35);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.12) inset, 0 8px 24px rgba(207, 62, 31, 0.28);
  font-weight: 600;
  border-radius: 999px;
  padding: 0.5rem 1.1rem;
}

.site-header .btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.15) inset, 0 12px 32px rgba(207, 62, 31, 0.35);
}

.site-header .btn-ghost {
  border-radius: 999px;
  border: 1px solid transparent;
}

.site-header .btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

/* ─── Surfaces & cards ─── */
body.nadir-site .surface-card,
body.nadir-site .showcase-panel,
body.nadir-site .demo-hub-card,
body.nadir-site .vl-card {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04) 0%, rgba(0, 0, 0, 0.15) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 24px 48px rgba(0, 0, 0, 0.25);
  transition: border-color 0.2s ease, transform 0.25s var(--ease-out-expo), box-shadow 0.25s ease;
}

body.nadir-site .surface-card:hover,
body.nadir-site .demo-hub-card:hover {
  border-color: rgba(249, 115, 22, 0.25);
  transform: translateY(-2px);
}

/* ─── Hero sections ─── */
body.nadir-site .hero {
  padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem);
  position: relative;
}

body.nadir-site .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--glow-hero, radial-gradient(ellipse 55% 45% at 50% 0%, rgba(249, 115, 22, 0.18), transparent 70%));
  pointer-events: none;
  opacity: 0.85;
}

body.nadir-site .hero .container {
  position: relative;
  z-index: 1;
}

/* ─── CTA band (Stripe footer CTA pattern) ─── */
/* CTA band removed site-wide — kept for reference if re-enabled */
.cta-band {
  display: none !important;
}

.cta-band h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

/* ─── Contact page (NADIR magma, not Stripe indigo) ─── */
.contact-page .hero::before {
  background: radial-gradient(ellipse 55% 45% at 50% 0%, rgba(255, 90, 42, 0.22), transparent 70%);
  opacity: 0.9;
}

.contact-page .hero h1 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.03em;
}

body.nadir-pitch {
  background:
    radial-gradient(circle at 14% 12%, rgba(255, 90, 42, 0.09), transparent 34%),
    radial-gradient(circle at 88% 0%, rgba(255, 154, 82, 0.06), transparent 26%),
    radial-gradient(circle at 50% 100%, rgba(255, 43, 43, 0.04), transparent 28%),
    #0b0c0f !important;
}

.contact-page {
  padding-bottom: 5rem;
}

.contact-layout {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
}

@media (min-width: 960px) {
  .contact-layout {
    grid-template-columns: 1fr 1.15fr;
    align-items: start;
  }
}

.contact-aside {
  padding: clamp(1.5rem, 3vw, 2rem);
  border-radius: 20px;
  background: linear-gradient(160deg, rgba(219, 71, 34, 0.14), rgba(18, 20, 25, 0.92));
  border: 1px solid rgba(219, 71, 34, 0.22);
}

.contact-aside h2 {
  font-size: 1.35rem;
  margin: 1rem 0 0.75rem;
}

.contact-aside ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.contact-aside li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--text2);
}

.contact-aside li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--nadir-magma-500);
  flex-shrink: 0;
}

.contact-form-panel {
  padding: clamp(1.75rem, 3vw, 2.5rem);
  border-radius: 20px;
  background: rgba(15, 17, 21, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.4);
}

.contact-form-panel h2 {
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

.contact-form-panel > p {
  color: var(--text2);
  font-size: 0.95rem;
  margin-bottom: 1.75rem;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem 1rem;
}

.contact-form .field-full {
  grid-column: 1 / -1;
}

.contact-form label {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 0.4rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  font-family: var(--body);
  font-size: 0.95rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: rgba(249, 115, 22, 0.55);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-form-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.contact-form-status {
  font-size: 0.88rem;
  color: var(--text2);
  min-height: 1.25rem;
}

.contact-form-status.is-success {
  color: var(--ok);
}

.contact-form-status.is-error {
  color: var(--red);
}

.contact-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.contact-trust-item strong {
  display: block;
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}

.contact-trust-item span {
  font-size: 0.8rem;
  color: var(--text3);
}

/* ─── Simulation back bar ─── */
.sim-back-bar {
  position: sticky;
  top: var(--header-h, 72px);
  z-index: 900;
  background: rgba(10, 11, 13, 0.94);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.sim-back-bar__inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.65rem 0;
  flex-wrap: wrap;
}

.sim-back-link {
  font-family: var(--display);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--nadir-magma-400);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.sim-back-link:hover {
  color: var(--text);
}

.sim-back-link--muted {
  font-weight: 500;
  color: var(--text3);
}

.sim-back-link--muted:hover {
  color: var(--text2);
}

/* Simulation uses shared header — hide duplicate local nav */
body.nadir-site.simulation-page .site-header + .sim-back-bar ~ main,
body.nadir-site.simulation-page main.demo-page {
  padding-top: 0;
}

body.nadir-site.simulation-page main.demo-page {
  padding-top: 1.5rem;
}

/* ─── Visuals lab with global nav only ─── */
body.vl-page .vl-nav {
  display: none !important;
}

body.vl-page .vl-subnav {
  top: var(--header-h, 72px);
}

body.vl-page .vl-hero {
  padding-top: calc(var(--header-h, 72px) + 3.5rem);
}

body.vl-page main {
  padding-top: 0;
}

/* Evidence strip on visuals lab */
.vl-evidence-strip {
  padding: 3rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.2);
}

.vl-evidence-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 900px) {
  .vl-evidence-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.vl-evidence-card {
  padding: 1.25rem;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(15, 17, 21, 0.8);
}

.vl-evidence-card canvas {
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin-top: 0.75rem;
  background: rgba(0, 0, 0, 0.35);
}

.vl-algo-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.vl-algo-compare pre {
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.5;
  color: var(--text2);
  white-space: pre-wrap;
  margin-top: 0.5rem;
}

.vl-algo-before {
  border: 1px solid rgba(255, 59, 48, 0.3);
  background: rgba(255, 59, 48, 0.06);
  border-radius: 12px;
  padding: 1rem;
}

.vl-algo-after {
  border: 1px solid rgba(249, 115, 22, 0.35);
  background: rgba(249, 115, 22, 0.08);
  border-radius: 12px;
  padding: 1rem;
}

/* ─── Footer ─── */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.35));
  margin-top: 4rem;
}

.footer-grid {
  padding: 3.5rem 0 2rem;
}

.footer-col a {
  font-size: 0.875rem;
  color: var(--text2);
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--nadir-magma-400);
}

/* Homepage uses .home-nav from index.html — hide injected site-header if present */
body.nadir-home .site-header,
body.nadir-home .nav-drawer,
body.nadir-home .nav-drawer-backdrop,
body.nadir-home .sim-back-bar {
  display: none !important;
}

body.nadir-home footer:not(.site-footer) {
  display: none;
}

/* Article list polish */
.article-list a {
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.article-list a:hover {
  border-color: rgba(249, 115, 22, 0.3);
  background: rgba(249, 115, 22, 0.06);
}

/* Lead modal — Stripe checkout clarity */
.lead-card {
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 48px 96px rgba(0, 0, 0, 0.55);
}

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex !important;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .vl-algo-compare {
    grid-template-columns: 1fr;
  }
}