@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap");

:root {
  --bg: #ffffff;
  --fg: #11181c;
  --muted: #687076;
  --tint: #0a7ea4; /* app light tint */
  --accent: #7a5cff; /* trendy accent */
  --card: #f7f9fb;
  --shadow: 0 10px 30px rgba(16, 24, 40, 0.08);
  --ring: 0 0 0 8px color-mix(in oklab, var(--tint) 10%, transparent);
  /* page background (light): soft purple inspired by the hero top */
  --pageBg: #efe6ff; /* light lavender */
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151718;
    --fg: #ecedee;
    --muted: #9ba1a6;
    --tint: #ffffff; /* app dark tint */
    --card: #1c1f21;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    /* page background (dark): keep solid dark base */
    --pageBg: #151718;
  }
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial,
    sans-serif;
  color: var(--fg);
  /* Solid page background to avoid repeating gradient seams */
  background: var(--pageBg);
  padding-top: 68px;
}

.container {
  width: min(1150px, 90%);
  margin: 0 auto;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--fg) 12%, transparent);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
}
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}
nav .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.2px;
}
/* Long-form wordmark logo */
nav .brand img {
  height: 52px;
  width: auto;
  display: block;
}
nav .links {
  display: flex;
  gap: 18px;
  align-items: center;
}
nav a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  opacity: 0.9;
  transition: color 0.2s ease, opacity 0.2s ease;
}
nav a:hover {
  opacity: 1;
  color: var(--tint);
}

/* Global link styles */
a {
  color: color-mix(in oklab, var(--tint) 92%, var(--accent));
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in oklab, currentColor 30%, transparent);
}
a:hover {
  text-decoration-color: currentColor;
}

.hero {
  position: relative;
  padding: 96px 0 64px;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  grid-template-areas: "content art" "ctas art";
  gap: 56px;
  align-items: center;
}
.hero-content {
  position: relative;
  z-index: 1;
  grid-area: content;
}
.hero-ctas {
  grid-area: ctas;
}
.hero-art {
  grid-area: art;
}
.hero h1 {
  font-size: clamp(36px, 5.4vw, 64px);
  line-height: 1.05;
  margin: 0 0 16px;
  letter-spacing: -0.9px;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--tint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  font-size: clamp(16px, 2.3vw, 20px);
  color: var(--muted);
  margin: 0 0 26px;
}
.btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  appearance: none;
  border: 0;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn.primary {
  background: var(--fg);
  color: var(--bg);
  box-shadow: var(--shadow);
}
.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px color-mix(in oklab, var(--fg) 16%, transparent);
}
.btn.ghost {
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  color: var(--fg);
  border: 1px solid color-mix(in oklab, var(--fg) 12%, transparent);
}
.btn.ghost:hover {
  border-color: color-mix(in oklab, var(--fg) 22%, transparent);
}

.card {
  background: var(--card);
  border: 1px solid color-mix(in oklab, var(--fg) 10%, transparent);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12, 1fr);
}
.grid > .col-4 {
  grid-column: span 4;
}
.grid > .col-6 {
  grid-column: span 6;
}
.grid > .col-12 {
  grid-column: 1 / -1;
}
ul {
  margin: 8px 0 0 20px;
  color: var(--muted);
}
ul li {
  margin: 4px 0;
}

/* Gallery sizing */
.gallery-item {
  grid-column: span 3;
}
@media (max-width: 1100px) {
  .gallery-item {
    grid-column: span 4;
  }
}
@media (max-width: 700px) {
  .gallery-item {
    grid-column: 1 / -1;
  }
}

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: color-mix(in oklab, var(--fg) 4%, transparent);
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid color-mix(in oklab, var(--fg) 14%, transparent);
}

.section {
  padding: 56px 0;
}
.section h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 3.6vw, 38px);
}
.section p.lead {
  color: var(--muted);
  margin-top: 0;
}
.muted {
  color: var(--muted);
}

.footer {
  padding: 28px 0 56px;
  color: var(--muted);
  font-size: 14px;
}
.footer a {
  color: inherit;
}

/* Subtle float animation for hero artwork */
.floaty {
  animation: floaty 6s ease-in-out infinite;
}
@keyframes floaty {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-6px);
  }
}

/* Collapsible details styling for FAQ */
details {
  background: var(--card);
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--fg) 10%, transparent);
  padding: 14px 18px;
}
details + details {
  margin-top: 10px;
}
summary {
  cursor: pointer;
  font-weight: 700;
}
summary::marker {
  color: var(--accent);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    grid-template-areas:
      "content"
      "art"
      "ctas";
    gap: 28px;
  }
}

/* App Store badge and parallax */
.store-badges {
  margin-top: 12px;
}
.store-badges .app-store-badge {
  height: 44px;
  width: auto;
  display: inline-block;
}

.parallax {
  position: absolute;
  inset: 0;
  height: 100%;
  pointer-events: none;
}
.parallax .layer {
  position: absolute;
  top: -30%;
  width: 90vmax;
  height: 90vmax;
  border-radius: 50%;
  filter: blur(44px);
  opacity: 0.22;
  transform: translate3d(0, 0, 0);
}
.parallax .layer:nth-child(1) {
  left: -20%;
  background: radial-gradient(
    circle at center,
    color-mix(in oklab, var(--accent) 60%, transparent),
    transparent 60%
  );
}
.parallax .layer:nth-child(2) {
  right: -10%;
  background: radial-gradient(
    circle at center,
    color-mix(in oklab, var(--tint) 70%, transparent),
    transparent 60%
  );
  opacity: 0.3;
}
.parallax .layer:nth-child(3) {
  left: 30%;
  background: radial-gradient(
    circle at center,
    color-mix(in oklab, var(--fg) 14%, transparent),
    transparent 60%
  );
  opacity: 0.14;
}

/* Frameless floating hero image */
.hero-art {
  position: relative;
  z-index: 1;
  background: transparent;
  border: 0;
  box-shadow: none;
}

/* Hero image styling (moved from inline) */
.hero-art img.hero-img {
  width: 72%;
  max-width: 360px;
  display: block;
  margin: 0 auto;
  border-radius: 22%;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

/* Enhanced mobile responsiveness */
@media (max-width: 900px) {
  body {
    padding-top: 64px;
  }
  .hero {
    padding: 80px 0 44px;
  }
  .hero h1 {
    font-size: clamp(32px, 7vw, 48px);
  }
  .hero p {
    font-size: 16px;
  }
  .hero-art img.hero-img {
    width: 66%;
    max-width: 300px;
  }
}

@media (max-width: 700px) {
  nav .brand img {
    height: 44px;
  }
  nav {
    padding: 6px 0;
  }
  body {
    padding-top: 60px;
  }
  .section {
    padding: 44px 0;
  }
  .grid > .col-4,
  .grid > .col-6 {
    grid-column: 1 / -1;
  }
  /* keep parallax on mobile with lighter visuals */
  .parallax {
    display: block;
  }
  .parallax .layer {
    width: 140vw;
    height: 140vw;
    top: -40%;
    filter: blur(36px);
    opacity: 0.18;
  }
  .parallax .layer:nth-child(1) {
    left: -40%;
  }
  .parallax .layer:nth-child(2) {
    right: -30%;
    opacity: 0.24;
  }
  .parallax .layer:nth-child(3) {
    left: 10%;
    opacity: 0.1;
  }
  .store-badges .app-store-badge {
    height: 40px;
  }
  .hero-art img.hero-img {
    width: 62%;
    max-width: 260px;
  }
}

@media (max-width: 480px) {
  nav .brand img {
    height: 40px;
  }
  body {
    padding-top: 56px;
  }
  .hero {
    padding: 72px 0 36px;
  }
  .btns {
    flex-direction: column;
    gap: 10px;
  }
  .btns .btn {
    width: 100%;
    text-align: center;
  }
  .store-badges .app-store-badge {
    height: 36px;
  }
  .hero-art img.hero-img {
    width: 60%;
    max-width: 220px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  }
}