:root {
  --bg: #08080b;
  --card: #14141c;
  --text: #f3f0f8;
  --muted: #b9b0c9;
  --purple: #c084fc;
  --purple-deep: #7c3aed;
  --glow: rgba(168, 85, 247, 0.35);
  --danger: #fb7185;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(1200px 500px at 50% -10%, rgba(124, 58, 237, 0.22), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
}

body {
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom)
    env(safe-area-inset-left);
}

.hidden {
  display: none !important;
}

h1,
h2 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.login-wrap {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card,
.sheet,
.top,
.grid .tile {
  background: var(--card);
  border: 1px solid rgba(192, 132, 252, 0.18);
  box-shadow: 0 0 40px var(--glow);
}

.login-card {
  width: min(100%, 390px);
  padding: 28px 22px 24px;
  border-radius: 24px;
  text-align: center;
}

.login-card h1 {
  font-size: 2rem;
  color: var(--purple);
  text-shadow: 0 0 18px var(--glow);
}

.sub,
.who,
.empty {
  color: var(--muted);
}

label {
  display: block;
  text-align: left;
  margin: 14px 0;
  font-size: 0.9rem;
  color: var(--muted);
}

input,
select,
button,
a.ghost,
#dl-btn {
  width: 100%;
  margin-top: 6px;
  padding: 14px 14px;
  border-radius: 14px;
  border: 1px solid rgba(192, 132, 252, 0.28);
  background: #0c0c12;
  color: var(--text);
  font-size: 1rem;
}

button,
#dl-btn,
.fab {
  background: linear-gradient(180deg, #a78bfa, var(--purple-deep));
  border: 0;
  color: white;
  font-weight: 650;
  cursor: pointer;
}

button.ghost {
  background: transparent;
  color: var(--muted);
  box-shadow: none;
}

.error {
  color: var(--danger);
  min-height: 1.2em;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 12px 96px;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius);
}

.top h1 {
  font-size: 1.45rem;
  color: var(--purple);
}

.top .ghost {
  width: auto;
  margin: 0;
  padding: 10px 14px;
}

.cats {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 14px 2px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.cats::-webkit-scrollbar {
  display: none;
}

.cats button {
  width: auto;
  flex: 0 0 auto;
  margin: 0;
  padding: 10px 14px;
  background: #12121a;
  color: var(--text);
  border: 1px solid rgba(192, 132, 252, 0.25);
}

.cats button.on {
  background: linear-gradient(180deg, #a78bfa, var(--purple-deep));
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.tile {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 16px;
  padding: 0;
  width: 100%;
}

.tile img,
.tile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #000;
}

.tile .kind {
  position: absolute;
  right: 8px;
  bottom: 8px;
  font-size: 0.7rem;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(8, 8, 11, 0.72);
  color: var(--purple);
}

.empty {
  text-align: center;
  padding: 48px 12px;
}

.fab {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  width: auto;
  padding: 16px 22px;
  border-radius: 999px;
  font-size: 1.05rem;
  box-shadow: 0 0 28px var(--glow);
  z-index: 5;
}

.sheet {
  width: min(100% - 24px, 440px);
  border: 0;
  padding: 0;
  background: transparent;
}

.sheet::backdrop,
.viewer::backdrop {
  background: rgba(0, 0, 0, 0.72);
}

.sheet form {
  padding: 20px;
  border-radius: 22px;
  background: var(--card);
  border: 1px solid rgba(192, 132, 252, 0.2);
  box-shadow: 0 0 40px var(--glow);
}

.row {
  display: flex;
  gap: 10px;
}

.row button {
  margin-top: 8px;
}

.viewer {
  width: min(100vw, 920px);
  height: min(100dvh, 100%);
  max-width: 100%;
  border: 0;
  padding: 0;
  background: #050508;
  color: var(--text);
}

.viewer::backdrop {
  background: #000c;
}

.viewer-bar {
  display: flex;
  gap: 10px;
  padding: 12px;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
}

.viewer-bar button,
.viewer-bar a {
  text-align: center;
  text-decoration: none;
}

#viewer-media {
  height: calc(100dvh - 84px);
  display: grid;
  place-items: center;
  background: #000;
  touch-action: none;
}

#viewer-media img,
#viewer-media video {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.swipe-hint {
  position: absolute;
  left: 50%;
  bottom: 92px;
  transform: translateX(-50%);
  font-size: 0.78rem;
  color: var(--muted);
  pointer-events: none;
  opacity: 0.85;
}

.close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 44px;
  z-index: 2;
  background: rgba(20, 20, 28, 0.8);
}

@media (min-width: 700px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1000px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
  }
}