:root {
  color-scheme: dark;
  --bg: #090d1a;
  --bg-grad-top: #1c2442;
  --panel: #11182d;
  --panel-strong: #18223f;
  --line: #2b3d73;
  --text: #e8eeff;
  --sub: #b7c4ef;
  --accent: #74a5ff;
  --accent-strong: #5d90f0;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 560px at 0% -10%, var(--bg-grad-top), transparent 60%),
    linear-gradient(180deg, #0b1020 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", system-ui, -apple-system, sans-serif;
}

.hero,
.container,
.footer {
  width: min(100% - 24px, 1040px);
  margin-inline: auto;
}

.hero {
  margin-top: 20px;
}

.hero__inner {
  border: 1px solid rgba(116, 165, 255, 0.28);
  border-radius: 24px;
  padding: 26px 20px;
  background: linear-gradient(145deg, rgba(116, 165, 255, 0.14), rgba(24, 34, 63, 0.88));
  box-shadow: var(--shadow);
}

.hero__badge {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #d6e3ff;
  background: rgba(116, 165, 255, 0.2);
  border: 1px solid rgba(116, 165, 255, 0.45);
}

h1,
h2 {
  margin: 0;
  line-height: 1.3;
}

h1 {
  margin-top: 12px;
  font-size: clamp(1.9rem, 6vw, 2.8rem);
}

.hero__lead {
  margin: 12px 0 0;
  color: var(--sub);
  line-height: 1.8;
}

.container {
  margin-top: 18px;
}

.apps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.app-card {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(116, 165, 255, 0.18);
  background: linear-gradient(160deg, rgba(116, 165, 255, 0.08), rgba(17, 24, 45, 0.94));
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.app-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #070b16;
}

.app-card__thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(7, 11, 22, 0.72));
}

.app-card__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-card__body {
  padding: 16px;
}

.app-card__body h2 {
  font-size: clamp(1.1rem, 4.6vw, 1.4rem);
}

.app-card__body h2 small {
  display: block;
  font-size: 0.7em;
  font-weight: 400;
  color: var(--sub);
  margin-top: 2px;
}

.app-card__body p {
  margin: 10px 0 14px;
  color: var(--sub);
  line-height: 1.7;
}

/* OS badges */
.app-card__os {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 14px;
}

.os-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.os-badge--ios {
  background: rgba(10, 132, 255, 0.18);
  color: #6cb8ff;
  border-color: rgba(10, 132, 255, 0.4);
}

.os-badge--android {
  background: rgba(61, 220, 132, 0.18);
  color: #5de5a8;
  border-color: rgba(61, 220, 132, 0.4);
}

.os-badge--unavailable {
  background: rgba(255, 255, 255, 0.04);
  color: #5a6080;
  border-color: rgba(255, 255, 255, 0.1);
}

/* Placeholder thumbnail when image is missing */
.app-card__thumb--placeholder {
  background: linear-gradient(145deg, #141d38, #0c1224);
}

.app-card__thumb--placeholder::before {
  content: "📱";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  z-index: 0;
}

.app-card__thumb-label {
  position: absolute;
  right: 10px;
  bottom: 10px;
  margin: 0;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #dbe6ff;
  background: rgba(7, 11, 22, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 1;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 136px;
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.button:hover,
.button:focus-visible {
  filter: brightness(1.08);
}

.footer {
  margin-block: 18px 28px;
  padding: 14px 16px;
  border-radius: 16px;
  text-align: center;
  color: #9fb0e8;
  background: rgba(17, 24, 45, 0.8);
  border: 1px solid rgba(116, 165, 255, 0.2);
}

.footer p {
  margin: 0;
}

@media (min-width: 720px) {
  .hero__inner {
    padding: 34px 30px;
  }

  .apps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .app-card__body {
    padding: 18px;
  }
}

@media (min-width: 1040px) {
  .apps-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}