:root {
  --bg: #111214;
  --surface: #1b1d21;
  --border: #2c2f35;
  --text: #e8e9eb;
  --muted: #9a9ea6;
  --accent: #7aa2ff;
  --error: #ff7a7a;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

button {
  font: inherit;
  cursor: pointer;
}

/* Login */
.login { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login-card {
  width: 100%;
  max-width: 340px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}
.login-card h1 { margin: 0; font-size: 1.4rem; }
.muted { color: var(--muted); margin: 4px 0 20px; }
.login-card label { display: block; font-size: .9rem; margin-bottom: 6px; }
.login-card input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.login-card input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.login-card button {
  width: 100%;
  margin-top: 16px;
  padding: 10px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #0b1020;
  font-weight: 600;
}
.error { color: var(--error); margin: 10px 0 0; font-size: .9rem; }

/* Gallery */
.bar {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.bar form { margin: 0; }
.crumbs { overflow-wrap: anywhere; }
.crumbs .sep { color: var(--muted); margin: 0 6px; }
.quiet {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  padding: 4px 10px;
  white-space: nowrap;
}
.quiet:hover { color: var(--text); }

main { padding: 16px; }
ul { list-style: none; margin: 0; padding: 0; }

.folders {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.folders a {
  display: inline-block;
  padding: 8px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}
.folders a::before { content: "\25B8\00a0"; color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
}
.thumb {
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 6px;
  background: var(--surface);
}
.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .2s;
}
.thumb:hover img { transform: scale(1.03); }
.empty { color: var(--muted); }

/* Lightbox */
#viewer {
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(0, 0, 0, .94);
  color: var(--text);
}
#viewer[open] { display: flex; align-items: center; justify-content: center; }
#viewer::backdrop { background: rgba(0, 0, 0, .94); }
#viewer-img {
  max-width: 100vw;
  max-height: calc(100vh - 56px);
  object-fit: contain;
}
.viewer-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  font-size: .9rem;
  color: var(--muted);
}
#viewer-caption { overflow-wrap: anywhere; }
#viewer .nav, #viewer .close {
  position: absolute;
  background: rgba(255, 255, 255, .08);
  border: 0;
  color: var(--text);
  border-radius: 999px;
  width: 44px;
  height: 44px;
  font-size: 28px;
  line-height: 1;
}
#viewer .nav:hover, #viewer .close:hover { background: rgba(255, 255, 255, .18); }
#viewer .prev { left: 12px; top: 50%; transform: translateY(-50%); }
#viewer .next { right: 12px; top: 50%; transform: translateY(-50%); }
#viewer .close { right: 12px; top: 12px; }