:root {
  --bg0: #07102a;
  --bg1: #0b1a3d;
  --tab: #4aa7ff;
  --tab-hi: #6bb8ff;
  --star: #f4c400;
  --text: #ffffff;
  --muted: #d7e3f7;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: #0a0f1c;
  color: var(--text);
}

.app {
  max-width: 430px;
  min-height: 100vh;
  margin: 0 auto;
  background:
    radial-gradient(circle at 18% 8%, rgba(255,255,255,.08) 0 1px, transparent 2px),
    radial-gradient(circle at 72% 14%, rgba(255,255,255,.07) 0 1px, transparent 2px),
    radial-gradient(circle at 40% 30%, rgba(255,255,255,.05) 0 1px, transparent 2px),
    radial-gradient(circle at 88% 42%, rgba(255,255,255,.06) 0 1px, transparent 2px),
    linear-gradient(180deg, #081433 0%, #0c1c44 55%, #08122e 100%);
  padding: 14px 12px 28px;
  position: relative;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.tab {
  border: 0;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(180deg, #5eb3ff, #3b9dff);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 2px 0 rgba(0,0,0,.18);
}
.tab.active {
  box-shadow: inset 0 -3px 0 #fff, 0 2px 0 rgba(0,0,0,.18);
}

.search-row {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.search {
  flex: 1;
  height: 44px;
  border-radius: 8px;
  border: 0;
  padding: 0 14px 0 40px;
  font-size: 16px;
  outline: none;
  background: #fff url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'><circle cx='11' cy='11' r='7'/><path d='M20 20l-3-3'/></svg>") 12px center no-repeat;
}
.search::placeholder { color: #9aa3af; }

.star-btn {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--star);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  box-shadow: 0 2px 6px rgba(0,0,0,.25);
  flex: 0 0 44px;
}
.star-btn.on { filter: brightness(1.05); }

.grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 12px;
}
.card { background: transparent; border: 0; padding: 0; text-align: center; color: inherit; }
.card-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  min-height: 20px;
}
.cover-wrap {
  background: #fff;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(0,0,0,.28);
}
.cover-wrap img {
  width: 100%;
  aspect-ratio: 3 / 4.15;
  object-fit: cover;
  display: block;
}
a.card {
  display: block;
  text-decoration: none;
  cursor: pointer;
}
.empty-cover {
  aspect-ratio: 3 / 4.15;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f4f7fb;
  padding: 16px;
}
.empty-cover-inner {
  display: grid;
  gap: 8px;
  text-align: center;
  color: #1e293b;
}
.empty-cover-inner strong {
  font-size: 15px;
  line-height: 1.25;
}
.empty-cover-inner span {
  font-size: 12px;
  color: #334155;
}
.card-date {
  margin-top: 8px;
  font-size: 13px;
  color: #eef4ff;
}

.store-list {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}
.store-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,.08);
  border: 0;
  border-radius: 12px;
  padding: 12px;
  color: #fff;
  text-align: left;
}
.badge {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 14px;
  background: #fff;
}
.store-meta { flex: 1; }
.store-meta b { display: block; font-size: 16px; }
.store-meta span { font-size: 12px; color: #c9d7ee; }

.viewer {
  position: fixed;
  inset: 0;
  background: #050814;
  z-index: 20;
  display: none;
  flex-direction: column;
}
.viewer.open { display: flex; }
.viewer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
}
.viewer-bar button {
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 8px 10px;
}
.viewer-stage {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  padding: 8px 10px 20px;
}
.viewer-stage img {
  width: min(100%, 520px);
  height: auto;
  background: #fff;
}

.note {
  margin-top: 22px;
  font-size: 11px;
  line-height: 1.45;
  color: #b7c6de;
  text-align: center;
}
.empty {
  margin-top: 40px;
  text-align: center;
  color: #c5d3ea;
}

@media (min-width: 760px) {
  body { padding: 24px 0; }
  .app {
    min-height: 860px;
    border-radius: 28px;
    box-shadow: 0 20px 60px rgba(0,0,0,.45);
  }
}