/* Spectrum Eye — site styles
   Palette continues the spectrum-eye.com deep-blue gradient and Segoe UI type,
   with the app emblem's amber and the analyzer's green as accents. */

:root {
  --navy-abyss: #000428;
  --navy-deep: #021539;
  --navy-mid: #03264f;
  --navy-lit: #004e92;

  --amber: #ffb400;
  --amber-soft: #ffc94d;
  --green: #74d18e;
  --slate: #7a97a2;

  --ink: #f4f8fb;
  --ink-dim: #b7c7d4;
  --ink-faint: #7e94a5;

  --hairline: rgba(255, 255, 255, 0.1);
  --hairline-strong: rgba(255, 255, 255, 0.18);
  --pane: rgba(255, 255, 255, 0.04);

  --font: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    Helvetica, Arial, sans-serif;
  --font-num: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    monospace;

  --shell: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 18px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--navy-abyss);
  background-image:
    radial-gradient(900px 620px at 82% -10%, rgba(0, 78, 146, 0.55), transparent 70%),
    radial-gradient(760px 520px at 8% 8%, rgba(255, 180, 0, 0.07), transparent 68%),
    linear-gradient(170deg, var(--navy-abyss) 0%, var(--navy-deep) 45%, var(--navy-mid) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--amber-soft);
  text-decoration-color: rgba(255, 201, 77, 0.35);
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease), text-decoration-color 0.2s var(--ease);
}

a:hover {
  color: #fff;
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}

p {
  margin: 0;
}

/* ---------- layout primitives ---------- */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--amber);
  color: #10203a;
  font-weight: 600;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.eyebrow {
  margin: 0 0 1.1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

.lede {
  color: var(--ink-dim);
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  max-width: 56ch;
}

.section {
  padding-block: clamp(4rem, 9vw, 7.5rem);
}

.section--tight {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.section__head {
  max-width: 62ch;
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}

.section__head h2 {
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
  margin-bottom: 1rem;
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(
    to right,
    transparent,
    var(--hairline-strong) 20%,
    var(--hairline-strong) 80%,
    transparent
  );
}

/* ---------- header ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    backdrop-filter 0.3s var(--ease);
}

.masthead[data-stuck="true"] {
  background: rgba(2, 12, 34, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--hairline);
}

.masthead__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}

/* the icon carries its own squircle, so no CSS masking here */
.brand img {
  width: 28px;
  height: 28px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 1.9rem);
}

.nav a {
  color: var(--ink-dim);
  font-size: 0.9375rem;
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
}

.nav__cta {
  padding: 0.45rem 1rem;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  color: var(--ink) !important;
}

.nav__cta:hover {
  border-color: var(--amber);
  color: var(--amber-soft) !important;
}

@media (max-width: 560px) {
  .nav a:not(.nav__cta) {
    display: none;
  }
}

/* ---------- hero ---------- */

.hero {
  padding-block: clamp(3rem, 7vw, 6rem) 0;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }
}

.hero h1 {
  font-size: clamp(2.4rem, 1.4rem + 4.4vw, 4.15rem);
  margin-bottom: 1.25rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--amber);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 1.75rem;
  margin-top: 2.25rem;
}

.badge-link {
  display: inline-block;
  transition: transform 0.25s var(--ease), filter 0.25s var(--ease);
}

.badge-link img {
  height: 54px;
  width: auto;
}

.badge-link:hover {
  transform: translateY(-2px);
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.45));
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
}

.text-link span {
  transition: transform 0.25s var(--ease);
}

.text-link:hover span {
  transform: translateX(4px);
}

.hero__note {
  margin-top: 1.75rem;
  font-size: 0.875rem;
  color: var(--ink-faint);
}

.hero__art {
  position: relative;
}

.hero__art::before {
  content: "";
  position: absolute;
  inset: 6% -12% 12% -6%;
  background: radial-gradient(
    closest-side,
    rgba(116, 209, 142, 0.22),
    rgba(0, 78, 146, 0.12) 55%,
    transparent 75%
  );
  filter: blur(12px);
  z-index: -1;
}

.hero__art img {
  width: 100%;
  filter: drop-shadow(0 40px 60px rgba(0, 4, 40, 0.6));
}

/* equalizer divider — decorative */

.eq {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 34px;
  margin-top: clamp(3rem, 6vw, 4.5rem);
  opacity: 0.55;
}

.eq span {
  flex: 1;
  min-width: 2px;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(to top, rgba(116, 209, 142, 0.15), var(--green));
  transform-origin: bottom;
  animation: eq-pulse 1.8s var(--ease) infinite alternate;
}

@keyframes eq-pulse {
  from {
    height: 12%;
  }
  to {
    height: 100%;
  }
}

/* ---------- feature grid ---------- */

.grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 700px) {
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.card {
  padding: clamp(1.5rem, 2.4vw, 2rem);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--pane);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease),
    background 0.3s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--hairline-strong);
  background: rgba(255, 255, 255, 0.06);
}

.card h3 {
  font-size: 1.1875rem;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--ink-dim);
  font-size: 0.9375rem;
}

.card__mark {
  display: block;
  margin-bottom: 1.1rem;
  font-family: var(--font-num);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.ticks {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink-dim);
}

.ticks li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.9375rem;
}

.ticks li + li {
  margin-top: 0.5rem;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--amber);
}

/* ---------- showcase rows ---------- */

.showcase {
  display: grid;
  gap: clamp(2rem, 5vw, 3.75rem);
  align-items: center;
}

@media (min-width: 880px) {
  .showcase {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .showcase--flip .showcase__art {
    order: -1;
  }
}

.showcase + .showcase {
  margin-top: clamp(3.5rem, 8vw, 6rem);
}

.showcase h2,
.showcase h3 {
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  margin-bottom: 1.1rem;
}

.showcase p {
  color: var(--ink-dim);
  margin-bottom: 1.5rem;
}

/* screenshots are device renders with their own bezel and transparent corners,
   so the shadow follows the image silhouette rather than a wrapper box */
.frame img {
  filter: drop-shadow(0 26px 45px rgba(0, 4, 40, 0.7));
}

.frame--phone {
  max-width: 320px;
  margin-inline: auto;
}

.figure {
  margin: 0;
}

.figure figcaption {
  margin-top: 0.85rem;
  font-size: 0.8125rem;
  color: var(--ink-faint);
}

/* ---------- quotes ---------- */

.quotes {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 760px) {
  .quotes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.quote {
  margin: 0;
  padding: clamp(1.4rem, 2.2vw, 1.85rem);
  border-left: 2px solid var(--amber);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--pane);
}

.quote p {
  font-size: 1.0625rem;
  line-height: 1.5;
}

.quote footer {
  margin-top: 0.9rem;
  font-size: 0.8125rem;
  color: var(--ink-faint);
}

/* ---------- stats ---------- */

.stats {
  display: grid;
  gap: 1.5rem clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  padding-block: clamp(2rem, 4vw, 3rem);
  border-block: 1px solid var(--hairline);
}

.stat dt {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.35rem;
}

.stat dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(1.35rem, 1.1rem + 0.9vw, 1.75rem);
  font-weight: 600;
  color: var(--ink);
}

/* ---------- in-page nav (features) ---------- */

.jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}

.jumps a {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--ink-dim);
  text-decoration: none;
}

.jumps a:hover {
  border-color: var(--amber);
  color: var(--amber-soft);
}

/* ---------- spec rows ---------- */

.spec {
  margin: 0;
  border-top: 1px solid var(--hairline);
}

.spec > div {
  display: grid;
  gap: 0.2rem 2rem;
  padding-block: 0.95rem;
  border-bottom: 1px solid var(--hairline);
}

@media (min-width: 640px) {
  .spec > div {
    grid-template-columns: minmax(0, 13rem) minmax(0, 1fr);
    align-items: baseline;
  }
}

.spec dt {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.spec dd {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.9375rem;
}

/* ---------- side-by-side phone shots ---------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1.5rem);
  align-items: start;
}

.gallery img {
  filter: drop-shadow(0 20px 36px rgba(0, 4, 40, 0.65));
}

/* ---------- closing call to action ---------- */

.closer {
  text-align: center;
  padding: clamp(2.75rem, 6vw, 4.5rem) clamp(1.5rem, 4vw, 3.5rem);
  border: 1px solid var(--hairline);
  border-radius: 28px;
  background:
    radial-gradient(120% 140% at 50% 0%, rgba(0, 78, 146, 0.45), transparent 65%),
    rgba(255, 255, 255, 0.03);
}

.closer h2 {
  font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.85rem);
  margin-bottom: 1rem;
}

.closer .lede {
  margin-inline: auto;
}

.closer .hero__cta {
  justify-content: center;
}

/* ---------- footer ---------- */

.footer {
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
  border-top: 1px solid var(--hairline);
  margin-top: clamp(3rem, 7vw, 5rem);
  color: var(--ink-faint);
  font-size: 0.875rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
  justify-content: space-between;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer a {
  color: var(--ink-dim);
  text-decoration: none;
}

.footer a:hover {
  color: #fff;
}

.footer strong {
  font-weight: 600;
  color: var(--ink-dim);
}

/* ---------- reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .eq span {
    animation: none;
    height: 45%;
  }
}