/* ==========================================================================
   Seabearing — marketing landing page
   Nautical dark, premium marine-tech feel. Mobile-first, responsive.
   ========================================================================== */

:root {
  --bg: #07131c;
  --bg-2: #0a1d29;
  --panel: rgba(11, 24, 35, 0.86);
  --panel-solid: #0b1823;
  --accent: #34c5b6;
  --accent-deep: #15756c;
  --accent-bright: #3ad0c0;
  --ink: #e9f2f8;
  --muted: #93aabd;
  --amber: #f4b740;
  --line: rgba(147, 170, 189, 0.16);
  --line-strong: rgba(147, 170, 189, 0.28);

  --grad-hero: radial-gradient(
      120% 90% at 85% -10%,
      rgba(52, 197, 182, 0.22) 0%,
      rgba(52, 197, 182, 0) 55%
    ),
    radial-gradient(
      90% 80% at 0% 0%,
      rgba(21, 117, 108, 0.28) 0%,
      rgba(21, 117, 108, 0) 60%
    );
  --grad-cta: linear-gradient(135deg, #3ad0c0 0%, #15756c 100%);
  --grad-cta-hover: linear-gradient(135deg, #4ddccd 0%, #1a8d83 100%);

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 22px;
  --shadow: 0 18px 50px -22px rgba(0, 0, 0, 0.75);
  --shadow-glow: 0 16px 40px -16px rgba(52, 197, 182, 0.45);

  --maxw: 1120px;
  --pad: clamp(20px, 5vw, 40px);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

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

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.62;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

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

p {
  margin: 0;
}

em {
  font-style: normal;
  color: var(--ink);
  background: linear-gradient(transparent 64%, rgba(52, 197, 182, 0.28) 0);
}

strong {
  color: var(--ink);
  font-weight: 650;
}

::selection {
  background: rgba(52, 197, 182, 0.32);
  color: #fff;
}

/* ----- background contour backdrop --------------------------------------- */
.bg-contours {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: var(--bg);
  overflow: hidden;
}

.bg-contours::before {
  /* subtle vertical wash so the page feels deep at the top, calm below */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #08151f 0%, #07131c 38%, #06101a 100%);
}

.bg-contours__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  mix-blend-mode: screen;
}

/* ----- layout helpers ---------------------------------------------------- */
main {
  display: block;
}

.hero,
.features,
.demo,
.pricing,
.closing {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.section-head {
  max-width: 720px;
  margin: 0 auto clamp(34px, 5vw, 52px);
  text-align: center;
}

.section-title {
  font-size: clamp(1.7rem, 4.2vw, 2.5rem);
}

.section-lede {
  margin-top: 16px;
  color: var(--muted);
  font-size: clamp(1rem, 2.4vw, 1.12rem);
}

/* ----- header ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 14px var(--pad);
  background: linear-gradient(180deg, rgba(7, 19, 28, 0.92), rgba(7, 19, 28, 0.6));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

/* full-bleed header backdrop on wide screens */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 19, 28, 0.92), rgba(7, 19, 28, 0.5));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 700;
}

.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 9px;
  filter: drop-shadow(0 4px 12px rgba(52, 197, 182, 0.32));
}

.brand__word {
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.5vw, 30px);
}

.site-nav a:not(.btn) {
  color: var(--muted);
  font-size: 0.97rem;
  font-weight: 500;
  transition: color 0.18s ease;
}

.site-nav a:not(.btn):hover {
  color: var(--ink);
}

/* hide text links on small screens; keep brand + launch button */
@media (max-width: 620px) {
  .site-nav a:not(.btn) {
    display: none;
  }
}

/* ----- buttons ----------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn__icon {
  width: 19px;
  height: 19px;
  flex: none;
}

.btn--primary {
  background: var(--grad-cta);
  color: #042a26;
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  background: var(--grad-cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 20px 46px -16px rgba(52, 197, 182, 0.6);
}

.btn--ghost {
  background: rgba(233, 242, 248, 0.04);
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn--ghost:hover {
  background: rgba(52, 197, 182, 0.1);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn--sm {
  padding: 9px 16px;
  font-size: 0.92rem;
}

.btn--lg {
  padding: 17px 30px;
  font-size: 1.1rem;
}

.btn--block {
  width: 100%;
}

/* ----- hero -------------------------------------------------------------- */
.hero {
  position: relative;
  padding-top: clamp(56px, 11vw, 110px);
  padding-bottom: clamp(56px, 11vw, 110px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto -20%;
  height: 120%;
  z-index: -1;
  background: var(--grad-hero);
  pointer-events: none;
}

.hero__inner {
  max-width: 760px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 12px;
  border-radius: 999px;
  background: rgba(52, 197, 182, 0.08);
  border: 1px solid rgba(52, 197, 182, 0.26);
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.eyebrow__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 0 4px rgba(52, 197, 182, 0.18);
  animation: pulse 2.6s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 4px rgba(52, 197, 182, 0.18);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(52, 197, 182, 0.05);
  }
}

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

.hero__title {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hero__word {
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  background: linear-gradient(180deg, #ffffff 0%, #bfe9e3 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__tag {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.hero__sub {
  margin-top: 22px;
  max-width: 620px;
  font-size: clamp(1.06rem, 2.6vw, 1.25rem);
  color: var(--muted);
  line-height: 1.6;
}

.hero__cta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero__chips {
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero__chips li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.hero__chips li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

/* ----- features ---------------------------------------------------------- */
.features {
  padding-top: clamp(40px, 8vw, 80px);
  padding-bottom: clamp(40px, 8vw, 80px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2.4vw, 22px);
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 3vw, 30px);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card--feature {
  position: relative;
  overflow: hidden;
}

.card--feature::after {
  /* faint teal glow that brightens on hover */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    80% 60% at 50% -10%,
    rgba(52, 197, 182, 0.12),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.card--feature:hover {
  transform: translateY(-4px);
  border-color: rgba(52, 197, 182, 0.4);
  box-shadow: 0 24px 56px -26px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(52, 197, 182, 0.18);
}

.card--feature:hover::after {
  opacity: 1;
}

.ficon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(
    135deg,
    rgba(58, 208, 192, 0.18),
    rgba(21, 117, 108, 0.18)
  );
  border: 1px solid rgba(52, 197, 182, 0.28);
  color: var(--accent-bright);
  margin-bottom: 18px;
}

.ficon svg {
  width: 26px;
  height: 26px;
}

.card--feature h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
}

.card--feature p {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

.features__more {
  margin-top: clamp(26px, 4vw, 40px);
  text-align: center;
  color: var(--muted);
  font-size: 1rem;
  max-width: 760px;
  margin-inline: auto;
}

.dot {
  color: var(--accent);
  margin: 0 2px;
}

/* ----- demo / video ------------------------------------------------------ */
.demo {
  padding-top: clamp(40px, 8vw, 80px);
  padding-bottom: clamp(40px, 8vw, 80px);
}

.video {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(52, 197, 182, 0.08);
  background: #05111a;
}

.video__el {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #05111a;
}

.video__play {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 84px;
  height: 84px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: #042a26;
  background: var(--grad-cta);
  box-shadow: 0 14px 40px -8px rgba(52, 197, 182, 0.6);
  transition: transform 0.18s ease, box-shadow 0.2s ease, opacity 0.25s ease;
}

.video__play svg {
  width: 34px;
  height: 34px;
  margin-left: 4px;
}

.video__play:hover {
  transform: scale(1.07);
  box-shadow: 0 18px 48px -8px rgba(52, 197, 182, 0.75);
}

.video__play::before {
  /* gentle pulsing ring */
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px solid rgba(52, 197, 182, 0.5);
  animation: ring 2.4s ease-out infinite;
}

@keyframes ring {
  0% {
    transform: scale(0.9);
    opacity: 0.7;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

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

.video.is-playing .video__play {
  opacity: 0;
  pointer-events: none;
}

/* ----- pricing ----------------------------------------------------------- */
.pricing {
  padding-top: clamp(40px, 8vw, 80px);
  padding-bottom: clamp(40px, 8vw, 80px);
}

.price-card {
  max-width: 720px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 4vw, 40px);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.price-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    90% 120% at 100% 0%,
    rgba(52, 197, 182, 0.1),
    transparent 60%
  );
  pointer-events: none;
}

.price-card__body,
.price-card__cta {
  position: relative;
}

.price-card__kicker {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
}

.price-card__price {
  margin-top: 14px;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 7px;
}

.price-card__from {
  color: var(--muted);
  font-size: 1rem;
}

.price-card__amount {
  font-size: clamp(2.6rem, 7vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.price-card__per {
  color: var(--muted);
  font-size: 0.95rem;
}

.price-card__note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.price-card__list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.price-card__list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink);
  font-size: 0.97rem;
}

.price-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(52, 197, 182, 0.16);
  border: 1px solid rgba(52, 197, 182, 0.4);
}

.price-card__list li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  width: 7px;
  height: 4px;
  border-left: 2px solid var(--accent-bright);
  border-bottom: 2px solid var(--accent-bright);
  transform: rotate(-45deg);
}

.price-card__cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.price-card__fine {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ----- closing CTA ------------------------------------------------------- */
.closing {
  text-align: center;
  padding-top: clamp(56px, 9vw, 96px);
  padding-bottom: clamp(56px, 9vw, 96px);
}

.closing h2 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  max-width: 620px;
  margin: 0 auto clamp(26px, 4vw, 38px);
  background: linear-gradient(180deg, #ffffff 0%, #bfe9e3 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ----- footer ------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 20px;
  padding: clamp(34px, 5vw, 50px) var(--pad);
  text-align: center;
}

.site-footer > * + * {
  margin-top: 12px;
}

.disclaimer {
  display: inline-block;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(244, 183, 64, 0.1);
  border: 1px solid rgba(244, 183, 64, 0.32);
  color: var(--amber);
  font-size: 0.86rem;
  font-weight: 600;
}

.credits {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
  max-width: 720px;
  margin-inline: auto;
}

.copyright {
  color: rgba(147, 170, 189, 0.6);
  font-size: 0.82rem;
}

/* ----- responsive tweaks ------------------------------------------------- */
@media (max-width: 680px) {
  .price-card {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .video__play {
    width: 66px;
    height: 66px;
  }
  .video__play svg {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 420px) {
  body {
    font-size: 16px;
  }
  .hero__cta .btn {
    width: 100%;
  }
}