/* Isomar's website. Colours are the app's design tokens (data/design/tokens.json):
   Day by default, Night when the system asks for dark or the visitor picks it. */

@font-face {
  font-family: "Adwaita Sans";
  src: url("fonts/AdwaitaSans-Regular.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Adwaita Sans";
  src: url("fonts/AdwaitaSans-Italic.woff2") format("woff2");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --bg: #f7f7f4;
  --bg-alt: #ecece7;
  --card: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #4a5560;
  --line: rgba(26, 26, 26, 0.12);
  --accent: #1d5cb8;
  --accent-bg: #2462c2;
  --on-accent: #ffffff;
  --water-name: #1763b0;
  --route: #e0570b;
  --magenta: #b8007e;
  --sea: #dce9f2;
  --medium: #d6eaf7;
  --shallow: #a9d0eb;
  --shallow-2: #c3def2;
  --drying: #b9d49a;
  --land: #f3e2b0;
  --coast: #2b2b2b;
  --grid: #6b8fa8;
  --boat: #111317;
  --warn-bg: #fdf3d6;
  --warn-ink: #7a5300;
  --warn-line: #b88500;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 12px 40px rgba(20, 40, 60, 0.18);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="day"]) {
    --bg: #0d1116;
    --bg-alt: #121820;
    --card: #161c24;
    --ink: #d4d7da;
    --ink-soft: #8f9aa6;
    --line: rgba(212, 215, 218, 0.12);
    --accent: #7fb0ee;
    --accent-bg: #3672c2;
    --on-accent: #ffffff;
    --water-name: #7fb0dc;
    --route: #f28c3f;
    --magenta: #d65ab0;
    --sea: #0f2131;
    --medium: #12283a;
    --shallow: #24435e;
    --shallow-2: #1b3349;
    --drying: #3d4a30;
    --land: #2c2820;
    --coast: #8d887c;
    --grid: #4a6a82;
    --boat: #f2f4f7;
    --warn-bg: #2a2412;
    --warn-ink: #e8c66a;
    --warn-line: #8a6d1e;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 40px rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}
:root[data-theme="night"] {
  --bg: #0d1116;
  --bg-alt: #121820;
  --card: #161c24;
  --ink: #d4d7da;
  --ink-soft: #8f9aa6;
  --line: rgba(212, 215, 218, 0.12);
  --accent: #7fb0ee;
  --accent-bg: #3672c2;
  --on-accent: #ffffff;
  --water-name: #7fb0dc;
  --route: #f28c3f;
  --magenta: #d65ab0;
  --sea: #0f2131;
  --medium: #12283a;
  --shallow: #24435e;
  --shallow-2: #1b3349;
  --drying: #3d4a30;
  --land: #2c2820;
  --coast: #8d887c;
  --grid: #4a6a82;
  --boat: #f2f4f7;
  --warn-bg: #2a2412;
  --warn-ink: #e8c66a;
  --warn-line: #8a6d1e;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 40px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Adwaita Sans", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

code {
  font-family: "Adwaita Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
}

.wrap {
  width: min(1180px, 100% - 32px);
  margin-inline: auto;
}

/* ---------- Top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand img {
  width: 34px;
  height: 34px;
}
.topbar nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
}
.topbar nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}
.topbar nav a:hover {
  color: var(--ink);
}

.palette {
  display: inline-flex;
  padding: 3px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
}
.palette button {
  border: 0;
  background: none;
  color: var(--ink-soft);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
}
.palette button[aria-pressed="true"] {
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 650;
  font-size: 16px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
  line-height: 1.2;
}
.btn svg {
  width: 22px;
  height: 22px;
  flex: none;
}
.btn small {
  display: block;
  font-weight: 500;
  font-size: 12.5px;
  opacity: 0.8;
  margin-top: 2px;
}
.btn-primary {
  background: var(--accent-bg);
  color: var(--on-accent);
  box-shadow: 0 2px 10px color-mix(in srgb, var(--accent-bg) 35%, transparent);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent-bg) 40%, transparent);
}
.btn-secondary {
  background: var(--card);
  color: var(--ink);
  border-color: var(--line);
}
.btn-secondary:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--ink) 30%, transparent);
}
.btn-small {
  padding: 7px 14px;
  font-size: 14px;
  border-radius: 10px;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--sea);
  border-bottom: 1px solid var(--line);
}
.hero-chart {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 900px;
  pointer-events: none;
}
.hero .wrap {
  position: relative;
  padding: 84px 0 0;
}
.hero-text {
  max-width: 720px;
}
.eyebrow {
  font-style: italic;
  color: var(--water-name);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 18px;
}
h1 {
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 0 0 22px;
  font-weight: 800;
}
h1 em {
  font-style: italic;
  font-weight: 700;
  color: var(--water-name);
}
.lede {
  font-size: clamp(18px, 2vw, 21px);
  color: var(--ink-soft);
  margin: 0 0 32px;
  max-width: 640px;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.fineprint {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.hero-shots {
  position: relative;
  margin: 64px auto 0;
  max-width: 1080px;
  padding-bottom: 0;
}
.window {
  border-radius: 12px 12px 0 0;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom: 0;
}
.hero-shots .window-mac {
  position: absolute;
  right: -72px;
  bottom: 56px;
  width: 40%;
  border-radius: 10px;
  border-bottom: 1px solid var(--line);
  overflow: visible;
}
.hero-shots .window-mac img {
  border-radius: 10px;
}
.platform-tag {
  position: absolute;
  z-index: 2;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--card);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

/* ---------- Problems ---------- */

section {
  padding: 96px 0;
}
.section-head {
  max-width: 760px;
  margin-bottom: 48px;
}
h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  font-weight: 800;
}
.section-head p {
  color: var(--ink-soft);
  font-size: 19px;
  margin: 0;
}

.problems {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.problem {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 22px 24px;
}
.problem .was {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0 0 14px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.problem .was strong {
  display: block;
  color: var(--ink);
  font-size: 17px;
  margin-bottom: 4px;
  text-decoration: line-through;
  text-decoration-color: color-mix(in srgb, var(--route) 70%, transparent);
  text-decoration-thickness: 2px;
}
.problem .now {
  margin: 0;
  font-size: 15.5px;
}
.problem .now strong {
  color: var(--water-name);
}

/* ---------- Features ---------- */

.features {
  background: var(--bg-alt);
  border-block: 1px solid var(--line);
}
.feature {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: center;
  padding: 56px 0;
}
.feature + .feature {
  border-top: 1px solid var(--line);
}
.feature.flip {
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
}
.feature.flip .feature-text {
  order: 2;
}
.feature h3 {
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  font-weight: 800;
}
.pain {
  position: relative;
  margin: 0 0 18px;
  padding: 12px 16px 12px 44px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--route) 9%, var(--card));
  border: 1px solid color-mix(in srgb, var(--route) 25%, transparent);
  font-size: 15.5px;
  color: var(--ink);
}
.pain::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 15px;
  width: 16px;
  height: 16px;
  /* the chart's caution triangle */
  background: var(--route);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}
.feature p {
  margin: 0 0 14px;
}
.feature ul {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 8px;
}
.feature li {
  position: relative;
  padding-left: 26px;
  font-size: 15.5px;
  color: var(--ink-soft);
}
.feature li::before {
  /* a waypoint on the route */
  content: "";
  position: absolute;
  left: 3px;
  top: 0.48em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2.5px solid var(--route);
  background: var(--card);
}
.feature li strong {
  color: var(--ink);
  font-weight: 650;
}
.shot {
  margin: 0;
}
.shot img {
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  width: 100%;
  height: auto;
}
.shot figcaption {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin-top: 12px;
  text-align: center;
}
.shot-pair {
  display: grid;
  gap: 18px;
}

/* ---------- Native ---------- */

.native-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.native-grid > div {
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--card);
}
.native-grid h3 {
  margin: 0 0 8px;
  font-size: 19px;
}
.native-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15.5px;
}

/* ---------- Gallery ---------- */

.gallery-section {
  background: var(--bg-alt);
  border-block: 1px solid var(--line);
}
.tabs {
  display: inline-flex;
  padding: 4px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  margin-bottom: 28px;
}
.tabs button {
  border: 0;
  background: none;
  color: var(--ink-soft);
  font: inherit;
  font-weight: 650;
  font-size: 15px;
  padding: 8px 18px;
  border-radius: 9px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.tabs button svg {
  width: 18px;
  height: 18px;
}
.tabs button[aria-selected="true"] {
  background: var(--accent-bg);
  color: var(--on-accent);
}
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.gallery[hidden] {
  display: none;
}
.gallery figure {
  margin: 0;
}
.gallery button {
  display: block;
  padding: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
  width: 100%;
}
.gallery img {
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 18px rgba(20, 40, 60, 0.12);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
  width: 100%;
  transition: transform 0.15s ease;
}
.gallery button:hover img {
  transform: translateY(-2px);
}
.gallery figcaption {
  font-size: 14px;
  color: var(--ink-soft);
  margin-top: 10px;
}
.gallery figcaption strong {
  color: var(--ink);
  display: block;
  font-size: 15px;
}

dialog.lightbox {
  border: 0;
  padding: 0;
  background: none;
  max-width: min(1400px, 96vw);
  max-height: 94vh;
}
dialog.lightbox::backdrop {
  background: rgba(5, 9, 14, 0.85);
}
dialog.lightbox img {
  max-height: 88vh;
  width: auto;
  border-radius: 10px;
}
dialog.lightbox p {
  color: #e6e9ec;
  text-align: center;
  margin: 10px 0 0;
  font-size: 15px;
}

/* ---------- Download ---------- */

.downloads {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.dl {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 30px;
  display: flex;
  flex-direction: column;
}
.dl.suggested {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow);
}
.dl .badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--accent-bg);
  color: var(--on-accent);
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  display: none;
}
.dl.suggested .badge {
  display: block;
}
.dl-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.dl-head svg {
  width: 40px;
  height: 40px;
  color: var(--ink);
}
.dl h3 {
  margin: 0;
  font-size: 24px;
}
.dl .meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14.5px;
}
.dl ul {
  margin: 14px 0 22px;
  padding-left: 20px;
  color: var(--ink-soft);
  font-size: 15px;
}
.dl ul li {
  margin-bottom: 4px;
}
.dl .actions {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.cmd {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  overflow-x: auto;
}
.cmd code {
  white-space: nowrap;
  color: var(--ink);
}
.cmd button {
  margin-left: auto;
  flex: none;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink-soft);
  border-radius: 7px;
  font: inherit;
  font-size: 12.5px;
  font-weight: 600;
  padding: 3px 9px;
  cursor: pointer;
}

.not-for-nav {
  margin-top: 28px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 22px;
  border-radius: 14px;
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  color: var(--warn-ink);
}
.not-for-nav svg {
  width: 26px;
  height: 26px;
  flex: none;
  margin-top: 1px;
}
.not-for-nav p {
  margin: 0;
  font-size: 15.5px;
}
.not-for-nav strong {
  display: block;
  margin-bottom: 2px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 13.5px;
}

/* ---------- Footer ---------- */

footer {
  padding: 48px 0 56px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}
footer .wrap {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 32px;
}
footer p {
  margin: 0 0 8px;
}
footer .brand {
  margin-bottom: 12px;
}

/* ---------- Small screens ---------- */

@media (max-width: 980px) {
  .problems {
    grid-template-columns: 1fr 1fr;
  }
  .feature,
  .feature.flip {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .feature.flip .feature-text {
    order: 0;
  }
  .gallery {
    grid-template-columns: 1fr 1fr;
  }
  .native-grid {
    grid-template-columns: 1fr;
  }
  .hero-shots .window-mac {
    right: -16px;
    width: 44%;
  }
}
@media (max-width: 720px) {
  .topbar nav {
    display: none;
  }
  .palette {
    margin-left: auto;
  }
  section {
    padding: 64px 0;
  }
  .hero .wrap {
    padding-top: 48px;
  }
  .hero-chart {
    display: none;
  }
  .hero-shots {
    margin-top: 40px;
  }
  .hero-shots .window-mac {
    display: none;
  }
  .problems,
  .gallery,
  .downloads {
    grid-template-columns: 1fr;
  }
  .cta .btn {
    flex: 1 1 100%;
    justify-content: center;
  }
  footer .wrap {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn,
  .gallery img {
    transition: none;
  }
}

.gallery img.portrait {
  object-fit: contain;
  object-position: center;
  background: var(--bg);
}