:root {
  color-scheme: light;
  --background: #f7f8f6;
  --surface: #ffffff;
  --surface-strong: #eef2ed;
  --text: #202421;
  --muted: #68706a;
  --border: #d9ded8;
  --accent: #2f7565;
  --accent-strong: #1f5d51;
  --warning: #a75f28;
  --shadow: 0 18px 42px rgba(34, 43, 37, 0.09);
  --thumb-size: 180px;
  --default-doc-ratio: 0.733;
  --tile-width: calc(var(--thumb-size) + 32px);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--text);
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 36px clamp(18px, 5vw, 56px) 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #ffffff 0%, #f7f8f6 100%);
}

.header-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 12px;
  min-width: min(100%, 610px);
}

.title-block {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.language-control,
.size-control {
  display: grid;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 8px 20px rgba(34, 43, 37, 0.06);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.language-control {
  grid-template-columns: auto minmax(110px, 150px);
}

.language-control select {
  width: 100%;
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
}

.size-control {
  grid-template-columns: auto minmax(140px, 220px) 52px;
  min-width: min(100%, 410px);
}

.size-control input {
  width: 100%;
  accent-color: var(--accent);
}

.size-control output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  text-align: end;
}

.page-shell {
  width: min(1200px, calc(100% - 36px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.status {
  min-height: 1.5rem;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, var(--tile-width)), var(--tile-width)));
  gap: 18px;
  align-items: stretch;
  justify-content: start;
}

.file-tile {
  display: grid;
  grid-template-rows: auto auto;
  gap: 12px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.file-tile:hover,
.file-tile:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: 0 20px 48px rgba(31, 93, 81, 0.16);
  transform: translateY(-2px);
}

.file-tile:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 2px;
}

.preview {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  width: 100%;
  aspect-ratio: var(--thumb-ratio, var(--default-doc-ratio));
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-strong);
}

.preview img {
  max-width: 100%;
  max-height: 100%;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 3px;
  background: #ffffff;
  box-shadow: 0 6px 16px rgba(34, 43, 37, 0.18);
}

.file-name {
  min-height: 2.7rem;
  margin: 0;
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.file-kind {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
  text-transform: uppercase;
}

:root[dir="rtl"] .file-kind {
  text-transform: none;
}

.icon-preview {
  color: var(--accent-strong);
}

.icon-preview svg {
  display: block;
  width: clamp(52px, calc(var(--thumb-size) * 0.45), 112px);
  height: clamp(52px, calc(var(--thumb-size) * 0.45), 112px);
  stroke-width: 1.8;
}

.loading-preview,
.error-preview,
.empty-state {
  padding: 18px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1.4;
  text-align: center;
}

.error-preview {
  color: var(--warning);
}

.empty-state {
  grid-column: 1 / -1;
  min-height: 220px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.58);
}

.noscript {
  margin: 18px;
  color: var(--warning);
  font-weight: 700;
}

@media (max-width: 720px) {
  .site-header {
    display: grid;
    align-items: start;
    padding-top: 28px;
  }

  .header-controls {
    display: grid;
    justify-content: stretch;
    width: 100%;
  }

  .language-control {
    grid-template-columns: 1fr minmax(110px, 160px);
    width: 100%;
  }

  .size-control {
    grid-template-columns: 1fr 56px;
    width: 100%;
  }

  .size-control span {
    grid-column: 1 / -1;
  }

  .page-shell {
    width: min(100% - 28px, 1200px);
  }

  .file-grid {
    gap: 14px;
  }
}