:root {
  --blue: #2457ff;
  --ink: #0f172a;
  --muted: #64748b;
  --soft: #f5f7fb;
  --line: #e2e8f0;
  --danger: #dc2626;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #fff;
}

button, input, select, textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  filter: brightness(.94);
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  background: #fff;
  color: var(--ink);
}

textarea {
  min-height: 96px;
  resize: vertical;
}

code {
  background: var(--soft);
  border-radius: 6px;
  padding: 2px 6px;
}

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--line);
  padding: 18px;
  background: var(--soft);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 28px;
}

.logo {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-weight: 900;
}

.brand h1, .brand p {
  margin: 0;
}

.brand p, .topbar p, .message, .small {
  color: var(--muted);
}

.nav {
  width: 100%;
  margin-bottom: 8px;
  background: transparent;
  color: var(--ink);
  text-align: left;
}

.nav.active {
  background: #fff;
  color: var(--blue);
  box-shadow: 0 1px 8px rgba(15, 23, 42, .08);
}

.danger {
  background: var(--danger);
  color: #fff;
}

.content {
  padding: 24px;
}

.hidden {
  display: none !important;
}

.login-card, .panel {
  max-width: 720px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(15, 23, 42, .08);
}

.login-card {
  margin: 12vh auto 0;
  display: grid;
  gap: 12px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.topbar h2, .topbar p {
  margin: 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.stats article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #fff;
}

.stats span {
  display: block;
  font-size: 32px;
  font-weight: 900;
  color: var(--blue);
}

.stats p {
  margin: 4px 0 0;
  color: var(--muted);
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 12px;
  margin-bottom: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.wallpaper-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.wallpaper-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--soft);
}

.wallpaper-card > div, .form {
  display: grid;
  gap: 10px;
}

.wallpaper-card > div {
  padding: 12px;
}

.toggles, .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.toggles label {
  display: flex;
  gap: 6px;
  align-items: center;
  width: auto;
}

.toggles input {
  width: auto;
}

.table {
  display: grid;
  gap: 8px;
}

.row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.file-picker input {
  display: none;
}

.file-picker span {
  display: block;
  border: 1px dashed var(--blue);
  border-radius: 8px;
  padding: 16px;
  color: var(--blue);
  text-align: center;
  font-weight: 800;
}

progress {
  width: 100%;
  height: 12px;
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .stats, .toolbar {
    grid-template-columns: 1fr;
  }
}