/* ============================================================
   Realiti Landing
   Shared direction for landing, product system, and promo material
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-dark);
  background:
    radial-gradient(circle at top left, rgba(19, 199, 255, 0.14), transparent 28%),
    radial-gradient(circle at 85% 18%, rgba(255, 179, 77, 0.14), transparent 24%),
    linear-gradient(180deg, #091012 0%, #11191d 100%);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0.015)),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 11px,
      rgba(255, 255, 255, 0.015) 12px
    );
  opacity: 0.35;
  z-index: -1;
}

:root {
  --color-neutral-950: #091012;
  --color-neutral-900: #131b1f;
  --color-neutral-800: #21292d;
  --color-neutral-700: #2a3337;
  --color-neutral-100: #e8e3dc;
  --color-neutral-050: #f6f2eb;
  --color-white: #ffffff;
  --color-live: #13c7ff;
  --color-caution: #ffb34d;
  --color-verified: #78d4a4;
  --color-critical: #ff6a5b;
  --color-text-dark: #f6f4ef;
  --color-text-dark-muted: rgba(246, 244, 239, 0.7);
  --color-text-light: #172126;
  --color-text-light-muted: rgba(23, 33, 38, 0.68);
  --color-border-dark: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(23, 33, 38, 0.12);
  --color-panel-dark: rgba(14, 22, 26, 0.74);
  --color-panel-light: rgba(255, 255, 255, 0.72);

  --font-brand: 'Fraunces', Georgia, serif;
  --font-ui: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;

  --max-width: 1220px;
  --page-pad: clamp(24px, 6vw, 80px);
  --section-pad: clamp(88px, 10vw, 132px);
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --shadow-panel: 0 22px 60px rgba(4, 9, 11, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.08);

  --ease-default: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-hover: cubic-bezier(0.165, 0.84, 0.44, 1);
}

main,
section,
footer {
  position: relative;
}

main {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--color-live);
  outline-offset: 4px;
}

#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 18px 0;
  color: var(--color-text-dark);
  transition:
    color 220ms var(--ease-default),
    background-color 220ms var(--ease-default),
    border-color 220ms var(--ease-default);
}

#site-header::before {
  content: '';
  position: absolute;
  inset: 10px var(--page-pad) auto;
  height: calc(100% - 20px);
  border-radius: var(--radius-pill);
  background: rgba(10, 17, 20, 0.52);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  z-index: -1;
}

#site-header.header--light {
  color: var(--color-text-light);
}

#site-header.header--light::before {
  background: rgba(246, 242, 235, 0.76);
  border-color: rgba(23, 33, 38, 0.08);
}

.header-inner {
  width: min(var(--max-width), calc(100% - (var(--page-pad) * 2)));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  min-height: 60px;
}

.header-logo {
  font-family: var(--font-brand);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.header-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 2vw, 30px);
  font-size: 0.9rem;
  color: inherit;
  opacity: 0.82;
}

.header-nav a {
  transition: opacity 180ms var(--ease-hover);
}

.header-nav a:hover {
  opacity: 1;
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  border: 1px solid currentColor;
  font-size: 0.9rem;
  font-weight: 600;
  transition:
    transform 180ms var(--ease-hover),
    background-color 180ms var(--ease-hover),
    color 180ms var(--ease-hover),
    border-color 180ms var(--ease-hover);
}

.header-cta:hover,
.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-text-light);
}

.button--primary:hover {
  background: var(--color-live);
  border-color: var(--color-live);
}

.button--secondary {
  color: var(--color-text-dark);
  background: transparent;
}

.button--secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}

.section-label {
  margin: 0 0 18px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(246, 244, 239, 0.52);
}

.section-label--live {
  color: rgba(19, 199, 255, 0.9);
}

.section-intro {
  width: min(100%, 780px);
}

.section-heading {
  margin: 0;
  font-family: var(--font-brand);
  font-size: clamp(2.4rem, 4vw, 4.3rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.section-copy {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 1.02rem;
  color: var(--color-text-light-muted);
}

.section-copy--dark {
  color: var(--color-text-dark-muted);
}

.frame-panel {
  margin: 0;
  padding: clamp(16px, 2vw, 22px);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--color-border-dark);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(14px);
}

.frame-panel img {
  width: 100%;
  border-radius: calc(var(--radius-lg) - 10px);
}

.frame-panel figcaption {
  margin-top: 16px;
  font-size: 0.92rem;
  color: var(--color-text-dark-muted);
}

.hero,
.workflow,
.stack,
.waitlist,
.footer {
  color: var(--color-text-dark);
}

.hero {
  padding: calc(var(--section-pad) + 68px) var(--page-pad) 92px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 8% auto auto -8%;
  width: 36vw;
  height: 36vw;
  min-width: 320px;
  min-height: 320px;
  background: radial-gradient(circle, rgba(19, 199, 255, 0.28), transparent 68%);
  filter: blur(10px);
  opacity: 0.7;
}

.hero::after {
  content: '';
  position: absolute;
  right: -6%;
  bottom: 12%;
  width: 32vw;
  height: 32vw;
  min-width: 260px;
  min-height: 260px;
  background: radial-gradient(circle, rgba(255, 179, 77, 0.2), transparent 70%);
  filter: blur(8px);
  opacity: 0.75;
}

.hero-grid,
.workflow-grid,
.system-grid,
.footer-inner,
.proof-band,
.stack-grid,
.surface-grid,
.use-case-grid {
  width: min(var(--max-width), 100%);
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-headline {
  margin: 0;
  font-family: var(--font-brand);
  font-size: clamp(3.2rem, 6vw, 6.5rem);
  font-weight: 600;
  line-height: 0.96;
  letter-spacing: -0.055em;
  max-width: 10ch;
}

.hero-sub {
  margin: 24px 0 0;
  max-width: 60ch;
  font-size: clamp(1.02rem, 1.4vw, 1.16rem);
  color: var(--color-text-dark-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-points {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.hero-points li {
  position: relative;
  padding-left: 18px;
  color: rgba(246, 244, 239, 0.84);
}

.hero-points li::before {
  content: '';
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--color-live), rgba(19, 199, 255, 0.55));
}

.hero-visual {
  position: relative;
  z-index: 2;
}

.proof-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.proof-item {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.proof-label {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.proof-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
}

.platform,
.use-cases,
.system {
  padding: var(--section-pad) var(--page-pad);
  background:
    radial-gradient(circle at top right, rgba(19, 199, 255, 0.09), transparent 18%),
    linear-gradient(180deg, rgba(246, 242, 235, 0.98), rgba(241, 236, 229, 0.98));
  color: var(--color-text-light);
}

.surface-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.surface-card,
.use-case-card,
.stack-card,
.waitlist-shell {
  border-radius: var(--radius-lg);
}

.surface-card {
  padding: 28px;
  border: 1px solid var(--color-border-light);
  background: rgba(255, 255, 255, 0.6);
  box-shadow:
    0 18px 48px rgba(17, 25, 29, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.surface-card--dark {
  background: linear-gradient(180deg, rgba(19, 27, 31, 0.98), rgba(28, 39, 45, 0.98));
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--color-text-dark);
}

.surface-card--light {
  background: rgba(255, 255, 255, 0.92);
}

.surface-card--accent {
  background: linear-gradient(180deg, rgba(19, 199, 255, 0.12), rgba(255, 179, 77, 0.1));
}

.surface-tag,
.use-case-tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  margin-bottom: 18px;
  border-radius: var(--radius-pill);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.surface-card--dark .surface-tag {
  color: var(--color-live);
  background: rgba(19, 199, 255, 0.12);
}

.surface-card--light .surface-tag {
  color: var(--color-text-light);
  background: rgba(23, 33, 38, 0.08);
}

.surface-card--accent .surface-tag {
  color: #0e475a;
  background: rgba(255, 255, 255, 0.58);
}

.surface-card h3,
.use-case-card h3,
.stack-card h3 {
  margin: 0;
  font-family: var(--font-brand);
  font-size: clamp(1.6rem, 2vw, 2.2rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.surface-card p,
.use-case-card p,
.stack-card p {
  margin: 16px 0 0;
  color: inherit;
  opacity: 0.8;
}

.surface-list,
.use-case-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.surface-list li,
.use-case-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.96rem;
}

.surface-list li::before,
.use-case-list li::before {
  content: '';
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.35;
}

.workflow,
.stack,
.waitlist {
  padding: var(--section-pad) var(--page-pad);
}

.workflow-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.workflow-visual {
  background: rgba(255, 255, 255, 0.05);
}

.workflow-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 34px auto 0;
  width: min(var(--max-width), 100%);
}

.workflow-list li {
  padding: 22px 22px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(246, 244, 239, 0.88);
}

.workflow-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-right: 12px;
  border-radius: 50%;
  background: rgba(19, 199, 255, 0.12);
  color: var(--color-live);
  font-size: 0.86rem;
  font-weight: 700;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.use-case-card {
  padding: 30px;
  border: 1px solid var(--color-border-light);
  box-shadow:
    0 18px 48px rgba(17, 25, 29, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.use-case-card--manufacturing {
  background: linear-gradient(180deg, rgba(22, 31, 36, 0.98), rgba(28, 39, 45, 0.96));
  color: var(--color-text-dark);
}

.use-case-card--manufacturing .use-case-tag {
  color: var(--color-caution);
  background: rgba(255, 179, 77, 0.14);
}

.use-case-card--automotive {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(232, 242, 247, 0.92));
  color: var(--color-text-light);
}

.use-case-card--automotive .use-case-tag {
  color: #0f4e62;
  background: rgba(19, 199, 255, 0.14);
}

.system-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.system-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.swatch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 110px;
  min-height: 42px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid rgba(23, 33, 38, 0.08);
}

.swatch--carbon {
  color: var(--color-white);
  background: var(--color-neutral-950);
}

.swatch--fog {
  color: var(--color-text-light);
  background: var(--color-neutral-100);
}

.swatch--live {
  color: #0b2933;
  background: var(--color-live);
}

.swatch--caution {
  color: #4f3006;
  background: var(--color-caution);
}

.swatch--verified {
  color: #113523;
  background: var(--color-verified);
}

.type-samples {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.type-sample {
  margin: 0;
}

.type-sample--display {
  font-family: var(--font-brand);
  font-size: clamp(2rem, 3.3vw, 3.4rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.type-sample--ui {
  max-width: 54ch;
  color: var(--color-text-light-muted);
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.stack-card {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.waitlist-shell {
  width: min(860px, 100%);
  margin: 0 auto;
  padding: clamp(28px, 4vw, 42px);
  background:
    radial-gradient(circle at top right, rgba(19, 199, 255, 0.13), transparent 34%),
    linear-gradient(180deg, rgba(18, 30, 35, 0.96), rgba(10, 17, 20, 0.94));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-panel);
}

.waitlist-heading {
  margin: 0;
  font-family: var(--font-brand);
  font-size: clamp(2.6rem, 4vw, 4.1rem);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.waitlist-sub {
  margin: 18px 0 0;
  max-width: 54ch;
  color: var(--color-text-dark-muted);
}

.waitlist-form {
  margin-top: 30px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-input {
  flex: 1 1 auto;
  min-height: 56px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-dark);
  transition:
    border-color 180ms var(--ease-hover),
    background-color 180ms var(--ease-hover);
}

.form-input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-input:focus {
  border-color: rgba(19, 199, 255, 0.62);
  background: rgba(255, 255, 255, 0.09);
  outline: none;
}

.form-btn {
  min-width: 200px;
  min-height: 56px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  background: var(--color-white);
  color: var(--color-text-light);
  cursor: pointer;
  font-weight: 700;
  transition:
    transform 180ms var(--ease-hover),
    background-color 180ms var(--ease-hover),
    color 180ms var(--ease-hover);
}

.form-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  background: var(--color-live);
}

.form-btn:disabled {
  cursor: wait;
  opacity: 0.72;
}

.form-note,
.form-message {
  margin: 14px 0 0;
  font-size: 0.92rem;
}

.form-note {
  color: rgba(255, 255, 255, 0.54);
}

.form-message {
  min-height: 1.5em;
}

.form-message--success {
  color: var(--color-verified);
}

.form-message--error {
  color: #ffc8c1;
}

.footer {
  padding: 0 var(--page-pad) 54px;
}

.footer-inner {
  display: grid;
  gap: 26px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.footer-wordmark {
  font-family: var(--font-brand);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.footer-tagline,
.footer-copy {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.62);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: rgba(255, 255, 255, 0.82);
}

[data-reveal] {
  opacity: 1;
  transform: none;
}

[data-reveal].is-visible {
  animation: reveal-rise 620ms var(--ease-default);
}

@keyframes reveal-rise {
  from {
    opacity: 0;
    transform: translateY(26px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .workflow-grid,
  .system-grid {
    grid-template-columns: 1fr;
  }

  .proof-band,
  .surface-grid,
  .stack-grid {
    grid-template-columns: 1fr;
  }

  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .hero-headline {
    max-width: 12ch;
  }
}

@media (max-width: 900px) {
  .header-inner {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .header-nav {
    display: none;
  }

  .workflow-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  #site-header::before {
    inset-inline: 16px;
  }

  .hero {
    padding-top: calc(var(--section-pad) + 36px);
  }

  .form-row,
  .footer-top {
    flex-direction: column;
    align-items: stretch;
  }

  .form-btn {
    width: 100%;
    min-width: 0;
  }

  .button,
  .header-cta {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .surface-card,
  .use-case-card,
  .stack-card {
    padding: 24px;
  }
}

@media (max-width: 560px) {
  .hero-headline,
  .section-heading,
  .waitlist-heading {
    max-width: none;
  }

  .swatch {
    min-width: calc(50% - 5px);
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}