:root {
  --bg: #0f172a;
  --bg-strong: #020617;
  --card: #111827;
  --card-soft: rgb(15 23 42 / 70%);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --heading: #fff;
  --accent: #38bdf8;
  --accent-strong: #38bdf8;
  --cta: #38bdf8;
  --cta-strong: #38bdf8;
  --deep-accent: #38bdf8;
  --border: #1f2933;
  --card2: rgb(15 23 42 / 70%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    linear-gradient(180deg, var(--bg-strong), var(--bg));
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

header {
  position: relative;
  padding: 80px 20px 60px;
  text-align: center;
}

header h1 {
  font-size: 2.6rem;
  margin: 0 0 0.5rem;
  letter-spacing: 0.5px;
}

header p {
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.1rem;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: none;
}

.card--electric {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgb(23 31 42 / 98%), rgb(11 16 24 / 98%)),
    linear-gradient(135deg, rgb(56 189 248 / 9%), transparent 38%);
  border-color: rgb(56 189 248 / 68%);
  box-shadow:
    0 0 0 1px rgb(125 211 252 / 10%),
    0 14px 30px rgb(2 6 23 / 56%),
    0 0 18px rgb(14 165 233 / 18%),
    0 0 36px rgb(37 99 235 / 12%);
  transition:
    border-color 0.22s ease,
    box-shadow 0.22s ease,
    background-color 0.22s ease;
}

.card--electric > * {
  position: relative;
  z-index: 1;
}

.card--electric::before,
.card--electric::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}

.card--electric::before {
  inset: -1px;
  background:
    radial-gradient(circle at top left, rgb(125 211 252 / 55%), transparent 22%),
    radial-gradient(circle at top right, rgb(56 189 248 / 34%), transparent 24%),
    linear-gradient(125deg, transparent 18%, rgb(96 165 250 / 18%) 34%, transparent 49%, rgb(59 130 246 / 24%) 62%, transparent 76%);
  opacity: 0.7;
}

.card--electric::after {
  inset: -32%;
  background:
    linear-gradient(115deg, transparent 28%, rgb(186 230 253 / 6%) 43%, rgb(96 165 250 / 22%) 50%, rgb(191 219 254 / 10%) 56%, transparent 72%);
  opacity: 0;
  transform: translateX(-30%) rotate(8deg);
  transition:
    transform 0.45s ease,
    opacity 0.22s ease;
}

.card--electric:hover,
.card--electric:focus-within {
  border-color: rgb(125 211 252 / 90%);
  box-shadow:
    0 0 0 1px rgb(186 230 253 / 16%),
    0 18px 38px rgb(2 6 23 / 62%),
    0 0 22px rgb(56 189 248 / 28%),
    0 0 44px rgb(37 99 235 / 18%);
}

.card--electric:hover::after,
.card--electric:focus-within::after {
  opacity: 0.9;
  transform: translateX(22%) rotate(8deg);
}

.card--page-surface {
  background: linear-gradient(180deg, var(--bg-strong), var(--bg));
}

h2,
h3 {
  color: var(--heading);
  margin-top: 0;
}

h2 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

p {
  margin: 0.5rem 0;
  color: inherit;
}

ul,
ol {
  margin: 0.4rem 0 0.9rem 1.25rem;
}

li {
  margin: 0.3rem 0;
}

footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  background: transparent;
}

.accent {
  color: var(--accent);
}

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

.home-button,
.jjj-button,
.ymda-button,
.button-link,
nav.topnav > a,
nav.topnav > p > a {
  padding: 8px 14px;
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgb(23 31 42 / 96%), rgb(11 16 24 / 96%)),
    linear-gradient(135deg, rgb(56 189 248 / 7%), transparent 42%);
  border: 1px solid rgb(56 189 248 / 68%);
  color: var(--text);
  font-size: 0.9rem;
  text-decoration: none;
  backdrop-filter: blur(6px);
  box-shadow:
    inset 0 1px 0 rgb(186 230 253 / 20%),
    inset 0 -1px 0 rgb(2 6 23 / 60%),
    0 8px 18px rgb(2 6 23 / 34%),
    0 0 0 1px rgb(125 211 252 / 10%);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease,
    background-color 0.18s ease;
}

.home-button:hover,
.jjj-button:hover,
.ymda-button:hover,
.button-link:hover,
nav.topnav > a:hover,
nav.topnav > p > a:hover {
  background:
    linear-gradient(180deg, rgb(30 41 59 / 98%), rgb(15 23 42 / 98%)),
    linear-gradient(135deg, rgb(56 189 248 / 11%), transparent 46%);
  border-color: rgb(125 211 252 / 90%);
  color: var(--text);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgb(224 242 254 / 24%),
    inset 0 -1px 0 rgb(2 6 23 / 72%),
    0 14px 24px rgb(2 6 23 / 42%),
    0 3px 0 rgb(8 47 73 / 85%),
    0 0 0 1px rgb(186 230 253 / 16%);
}

.home-button:active,
.jjj-button:active,
.ymda-button:active,
.button-link:active,
nav.topnav > a:active,
nav.topnav > p > a:active {
  transform: translateY(1px);
  box-shadow:
    inset 0 2px 4px rgb(2 6 23 / 42%),
    0 5px 12px rgb(2 6 23 / 28%),
    0 1px 0 rgb(8 47 73 / 72%);
}

.home-button,
.jjj-button,
.ymda-button {
  position: absolute;
  top: 20px;
}

.home-button,
.jjj-button {
  left: 20px;
}

.ymda-button {
  left: 160px;
}

nav.topnav {
  padding: 20px 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-start;
}

nav.topnav > p {
  margin: 0;
}

nav.topnav > a,
nav.topnav > p > a {
  display: inline-block;
}

.button-link {
  display: inline-block;
  margin-top: 0.25rem;
}

.desktop-label {
  display: inline;
}

.mobile-label {
  display: none;
}

.hero-card {
  background:
    radial-gradient(circle at top right, rgb(56 189 248 / 18%), transparent 30%),
    var(--card);
}

.kicker {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  margin-bottom: 0.8rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.mini-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  background: var(--card2);
}

.cta {
  border-left: 4px solid var(--cta);
  padding-left: 16px;
}

.card img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-top: 10px;
  cursor: zoom-in;
}

figure.screenshot {
  margin: 24px 0;
  padding: 16px;
  background: rgb(15 23 42 / 60%);
  border: 1px solid var(--border);
  border-radius: 14px;
}

figure.screenshot img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid #0b1220;
  box-shadow: 0 10px 30px rgb(0 0 0 / 40%);
  cursor: zoom-in;
  transition: transform 0.15s ease;
}

figure.screenshot img:hover {
  transform: scale(1.01);
}

figcaption {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
}

.lightbox {
  display: none;
  position: fixed;
  z-index: 999;
  inset: 0;
  background: rgb(32 49 63 / 92%);
  backdrop-filter: blur(6px);
  justify-content: center;
  align-items: center;
}

.lightbox img {
  max-width: 95vw;
  max-height: 95vh;
  width: auto;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 30px 80px rgb(0 0 0 / 45%);
}

.lightbox:target {
  display: flex;
}

.screenshot-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.store-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 18px;
  margin-top: 20px;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 1 auto;
}

.store-badge img {
  display: block;
  height: 44px;
  width: auto;
  cursor: pointer;
}

.store-badge-google img {
  height: 44px;
}

.screenshot-row img {
  flex: 0 1 200px;
  max-width: 220px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgb(0 0 0 / 35%);
  cursor: zoom-in;
}

#imgModal {
  border: none;
  padding: 0;
  background: transparent;
}

#imgModal::backdrop {
  background: rgb(32 49 63 / 75%);
}

.modal-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 18px;
}

.modal-close {
  align-self: flex-end;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgb(255 255 255 / 28%);
  background: rgb(48 76 100 / 82%);
  color: #f8fbfc;
  cursor: pointer;
}

.modal-stage {
  display: flex;
  align-items: center;
  gap: 16px;
}

#imgModalImage {
  max-width: min(92vw, 900px);
  max-height: 80vh;
  border-radius: 14px;
  box-shadow: 0 20px 70px rgb(0 0 0 / 35%);
  cursor: zoom-out;
}

.modal-prev,
.modal-next {
  width: 54px;
  height: 54px;
  border-radius: 999px;
  border: 1px solid rgb(255 255 255 / 24%);
  background: rgb(48 76 100 / 78%);
  color: #f8fbfc;
  font-size: 32px;
  cursor: pointer;
}

#imgModalCaption {
  max-width: min(92vw, 900px);
  text-align: center;
  font-size: 0.95rem;
  color: rgb(248 251 252 / 94%);
}

body.blog-page {
  line-height: 1.7;
}

body.blog-page header {
  padding: 84px 20px 44px;
}

body.blog-page header h1 {
  margin: 0 0 0.6rem;
  letter-spacing: 0.4px;
}

body.blog-page header p {
  max-width: 760px;
  font-size: 1.05rem;
}

body.blog-page main {
  max-width: 980px;
}

body.blog-page footer {
  padding: 36px 20px 50px;
  font-size: 0.92rem;
}

body.dart-mobile-page figure.screenshot {
  text-align: center;
}

body.dart-mobile-page figure.screenshot img {
  width: 50%;
  display: inline-block;
}

body.auth-page {
  font-family: sans-serif;
  margin: 24px;
  padding: 0;
  background: #fff;
  color: #111827;
  text-align: center;
}

body.home-page header {
  padding-top: 34px;
}

body.home-page .home-logo {
  margin-bottom: 1rem;
}

body.home-page .home-logo img {
  display: block;
  width: min(100%, 640px);
  height: auto;
  margin: 0 auto;
}

body.home-page nav.topnav {
  justify-content: center;
  gap: 14px;
  padding: 22px 20px 0;
}

body.home-page nav.topnav > a {
  min-width: 176px;
  text-align: center;
  background: rgb(17 24 39 / 70%);
}

body.home-page nav.topnav > a:last-child {
  background: rgb(17 24 39 / 70%);
}

body.home-page nav.topnav > a:hover {
  background: rgb(17 24 39 / 92%);
}

body.home-page .card,
body.simple-page .card,
body.gallery-page .card,
body.blog-page .card,
body.dart-page .card {
  color: var(--text);
}

body.home-page .card p,
body.simple-page .card p,
body.gallery-page .card p,
body.blog-page .card p,
body.dart-page .card p,
body.home-page .card li,
body.simple-page .card li,
body.gallery-page .card li,
body.blog-page .card li,
body.dart-page .card li {
  color: var(--text);
}

body.home-page .card a,
body.simple-page .card a,
body.gallery-page .card a,
body.blog-page .card a,
body.dart-page .card a {
  color: var(--accent);
}

body.home-page .card a:hover,
body.simple-page .card a:hover,
body.gallery-page .card a:hover,
body.blog-page .card a:hover,
body.dart-page .card a:hover {
  color: var(--accent-strong);
}

body.home-page .accent,
body.simple-page .accent,
body.gallery-page .accent,
body.blog-page .accent,
body.dart-page .accent {
  color: var(--accent);
}

body.auth-page h1,
body.auth-page p {
  color: #111827;
}

body.auth-page #widget {
  display: inline-block;
  margin-top: 16px;
}

@media (width <= 700px) {
  nav.topnav {
    padding: 16px;
    gap: 12px;
  }

  nav.topnav > a,
  nav.topnav > p {
    flex: 1 1 100%;
  }

  nav.topnav > a,
  nav.topnav > p > a {
    display: block;
    width: 100%;
    text-align: center;
    padding: 10px 12px;
  }

  .desktop-label {
    display: none;
  }

  .mobile-label {
    display: inline;
  }

  header {
    padding-top: 36px;
  }

  header h1 {
    font-size: 2rem;
  }

  body.blog-page header {
    padding-top: 36px;
  }

  body.home-page nav.topnav {
    padding: 16px;
  }

  body.home-page nav.topnav > a {
    min-width: 0;
  }
}

@media (width <= 480px) {
  .store-badges {
    gap: 10px;
  }

  .store-badge {
    width: auto;
  }

  .modal-prev,
  .modal-next {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card--electric,
  .card--electric::after {
    transition: none;
  }

  .card--electric::after,
  .card--electric:hover::after,
  .card--electric:focus-within::after {
    opacity: 0.18;
    transform: none;
  }
}