/* Disk Peek — retro-modern, theme-aware styling. No external fonts/assets. */

:root {
  --bg: #f4f6f8;
  --bg-panel: #ffffff;
  --bg-sunken: #eef1f4;
  --bg-hover: #e7ecf1;
  --bg-active: #dceaf1;
  --text: #1c2430;
  --text-dim: #5b6675;
  --text-faint: #8a95a3;
  --border: #d7dee6;
  --border-strong: #c2ccd6;
  --accent: #2d7d9a;
  --accent-strong: #1f5f77;
  --accent-soft: #dff0f6;
  --warn-bg: #fdf3d8;
  --warn-border: #e8c96a;
  --warn-text: #7a5a00;
  --danger: #b5473a;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --shadow: 0 1px 3px rgba(20, 30, 45, 0.08), 0 4px 16px rgba(20, 30, 45, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141a;
    --bg-panel: #171e26;
    --bg-sunken: #10161d;
    --bg-hover: #212b35;
    --bg-active: #1d3540;
    --text: #e5eaf0;
    --text-dim: #9aa7b5;
    --text-faint: #6b7787;
    --border: #262f3a;
    --border-strong: #33404d;
    --accent: #4fb3d4;
    --accent-strong: #6fc6e4;
    --accent-soft: #16323c;
    --warn-bg: #2e2711;
    --warn-border: #5e4f1e;
    --warn-text: #e0c56a;
    --danger: #e28175;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 6px 20px rgba(0, 0, 0, 0.3);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---- Header ---- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.4rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.85rem; }
.logo { width: 42px; height: 42px; flex-shrink: 0; filter: drop-shadow(0 1px 1px rgba(0,0,0,.15)); }
.logo-body { fill: var(--accent); }
.logo-shutter { fill: #cdd7e0; }
.logo-window { fill: var(--accent-strong); }
.logo-label { fill: #eef3f7; }
.site-header h1 { font-size: 1.35rem; margin: 0; letter-spacing: -0.01em; }
.tagline { margin: 0; font-size: 0.85rem; color: var(--text-dim); }
.tagline strong { color: var(--accent); }
.header-badges { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.badge {
  font-size: 0.72rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  color: var(--text-dim);
  white-space: nowrap;
}
.badge-link { text-decoration: none; color: var(--accent); font-family: var(--mono); }
.badge-link:hover { background: var(--accent-soft); }

/* ---- Main ---- */
#main { flex: 1; display: flex; flex-direction: column; min-height: 0; }

/* ---- Dropzone ---- */
.dropzone {
  flex: 1;
  margin: 1.6rem;
  border: 2.5px dashed var(--border-strong);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .15s;
  background: var(--bg-panel);
  min-height: 60vh;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); background: var(--accent-soft); outline: none; }
.dropzone.dragover { border-color: var(--accent); background: var(--accent-soft); transform: scale(1.005); }
.dz-inner { text-align: center; padding: 2rem; max-width: 520px; }
.dz-icon { width: 92px; height: 92px; margin-bottom: 0.4rem; }
.dz-disk-body { fill: var(--accent); }
.dz-disk-shutter { fill: #cdd7e0; }
.dz-disk-window { fill: var(--accent-strong); }
.dz-disk-label { fill: #eef3f7; }
.dz-arrow { stroke: var(--accent-strong); stroke-width: 2.2; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.dz-primary { font-size: 1.4rem; font-weight: 600; margin: 0.3rem 0 0.1rem; }
.dz-secondary { margin: 0 0 1rem; color: var(--text-dim); }
.dz-formats { font-size: 0.8rem; color: var(--text-faint); }
.dz-formats code {
  font-family: var(--mono);
  background: var(--bg-sunken);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
}
.link-btn {
  background: none; border: none; color: var(--accent);
  font: inherit; cursor: pointer; text-decoration: underline; padding: 0;
}

/* ---- ZIP picker (multiple disk images in one archive) ---- */
.zip-picker { flex: 1; display: flex; align-items: center; justify-content: center; padding: 1.6rem; }
.zp-inner { width: 100%; max-width: 520px; }
.zp-title { font-size: 1.1rem; font-weight: 600; margin: 0 0 0.15rem; }
.zp-zipname { font-family: var(--mono); color: var(--accent); }
.zp-sub { margin: 0 0 1rem; color: var(--text-dim); font-size: 0.9rem; }
.zp-list { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-direction: column; gap: 0.4rem; }
.zp-item {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  font: inherit; text-align: left; cursor: pointer;
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.65rem 0.85rem; color: var(--text); transition: background .12s, border-color .12s;
}
.zp-item:hover { background: var(--bg-hover); border-color: var(--accent); }
.zp-item::before { content: "💾"; margin-right: 0.15rem; }
.zp-file { font-family: var(--mono); font-size: 0.9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.zp-size { font-size: 0.78rem; color: var(--text-faint); font-family: var(--mono); flex-shrink: 0; }

/* ---- Viewer ---- */
.viewer { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.7rem 1.4rem; border-bottom: 1px solid var(--border);
  background: var(--bg-panel); flex-wrap: wrap;
}
.disk-meta { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; min-width: 0; }
.disk-name { font-family: var(--mono); font-weight: 600; font-size: 0.95rem; }
.chip {
  font-size: 0.72rem; font-family: var(--mono);
  background: var(--accent-soft); color: var(--accent-strong);
  border: 1px solid var(--accent); border-radius: 6px; padding: 0.12rem 0.45rem;
}
.chip-vol { background: var(--bg-sunken); color: var(--text-dim); border-color: var(--border); }
.disk-stats { font-size: 0.8rem; color: var(--text-dim); }
.toolbar-actions { display: flex; gap: 0.5rem; }

.btn {
  font: inherit; font-size: 0.82rem; cursor: pointer;
  background: var(--accent); color: #fff; border: 1px solid var(--accent-strong);
  padding: 0.4rem 0.75rem; border-radius: 8px; transition: background .12s, transform .05s;
  white-space: nowrap;
}
.btn:hover { background: var(--accent-strong); }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--text-dim); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }
.btn-sm { padding: 0.28rem 0.6rem; font-size: 0.78rem; }

/* ---- Warnings (shown inline, no click) ---- */
.warnings { background: var(--warn-bg); border-bottom: 1px solid var(--warn-border); padding: 0.5rem 1.4rem 0.6rem; }
.warnings-head { color: var(--warn-text); font-size: 0.82rem; font-weight: 600; }
.warn-icon { font-size: 0.9rem; }
.warnings-list { margin: 0.25rem 0 0; padding: 0 0 0 1.9rem; font-size: 0.8rem; color: var(--warn-text); }
.warnings-list li { margin: 0.15rem 0; }

/* ---- Split layout ---- */
.split { flex: 1; display: flex; min-height: 0; }
.tree-pane {
  width: 320px; flex-shrink: 0; border-right: 1px solid var(--border);
  background: var(--bg-panel); display: flex; flex-direction: column; min-height: 0;
}
.tree-head {
  padding: 0.5rem 1rem; font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-faint); border-bottom: 1px solid var(--border);
  font-weight: 600; display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
}
.deleted-toggle {
  font: inherit; font-size: 0.68rem; text-transform: none; letter-spacing: 0;
  cursor: pointer; background: var(--bg-sunken); color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 6px; padding: 0.1rem 0.4rem;
}
.deleted-toggle:hover { background: var(--bg-hover); color: var(--text); }
.deleted-toggle.active { background: var(--accent-soft); color: var(--accent-strong); border-color: var(--accent); }
.tree-row.deleted .tree-name { color: var(--text-faint); font-style: italic; }
.tree-row.deleted .tree-flag { color: var(--text-faint); }
.tree { list-style: none; margin: 0; padding: 0.4rem; overflow-y: auto; flex: 1; }
.tree ul { list-style: none; margin: 0; padding-left: 1.05rem; }
.tree-row {
  display: flex; align-items: center; gap: 0.4rem; padding: 0.28rem 0.5rem;
  border-radius: 6px; cursor: pointer; font-size: 0.85rem; user-select: none;
}
.tree-row:hover { background: var(--bg-hover); }
.tree-row.selected { background: var(--bg-active); color: var(--accent-strong); }
.tree-icon { flex-shrink: 0; width: 1rem; text-align: center; font-size: 0.9rem; }
.tree-name { font-family: var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.tree-size { font-size: 0.72rem; color: var(--text-faint); font-family: var(--mono); flex-shrink: 0; }
.tree-row.status-CONTIG .tree-name { color: var(--warn-text); }
.tree-row.status-XLINK .tree-name { color: var(--danger); }
.tree-flag { font-size: 0.6rem; padding: 0 0.25rem; border-radius: 3px; border: 1px solid currentColor; }
.tree-toggle { width: 0.9rem; flex-shrink: 0; color: var(--text-faint); font-size: 0.7rem; text-align: center; }

/* ---- Preview ---- */
.preview-pane { flex: 1; display: flex; flex-direction: column; min-height: 0; background: var(--bg-sunken); }
.preview-empty { flex: 1; display: flex; align-items: center; justify-content: center; color: var(--text-faint); }
.preview-content { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.preview-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.6rem 1rem; border-bottom: 1px solid var(--border); background: var(--bg-panel);
  flex-wrap: wrap;
}
.preview-filename { font-family: var(--mono); font-weight: 600; }
.preview-kind {
  font-size: 0.72rem; color: var(--text-dim); background: var(--bg-sunken);
  padding: 0.1rem 0.45rem; border-radius: 5px; margin-left: 0.5rem; border: 1px solid var(--border);
}
.preview-actions { display: flex; align-items: center; gap: 0.6rem; }
.view-toggle { display: inline-flex; border: 1px solid var(--border-strong); border-radius: 7px; overflow: hidden; }
.view-toggle button {
  font: inherit; font-size: 0.76rem; padding: 0.25rem 0.6rem; border: none;
  background: var(--bg-panel); color: var(--text-dim); cursor: pointer;
}
.view-toggle button.active { background: var(--accent); color: #fff; }
.preview-body { flex: 1; overflow: auto; padding: 1rem; min-height: 0; }
.preview-body pre {
  margin: 0; font-family: var(--mono); font-size: 0.82rem; line-height: 1.5;
  white-space: pre; color: var(--text);
}
.preview-body pre.wrap { white-space: pre-wrap; word-break: break-word; }
.hexdump { font-size: 0.78rem !important; color: var(--text-dim); }

.bin-header {
  font-family: var(--mono); font-size: 0.82rem; margin: 0 0 1rem;
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.6rem 0.85rem; display: inline-block;
}
.bin-header b { color: var(--accent); }

.image-wrap { display: flex; flex-direction: column; align-items: flex-start; gap: 0.75rem; }
.image-wrap canvas {
  image-rendering: pixelated; border: 1px solid var(--border-strong);
  border-radius: 4px; box-shadow: var(--shadow); background: #000;
  max-width: 100%; width: 512px; height: auto;
}
.image-caption { font-size: 0.78rem; color: var(--text-faint); }

/* ---- Footer ---- */
.site-footer {
  padding: 0.7rem 1.4rem; border-top: 1px solid var(--border);
  font-size: 0.76rem; color: var(--text-faint); text-align: center; background: var(--bg-panel);
}
.site-footer p { margin: 0.25rem 0; }
.footer-links a { color: var(--accent); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.footer-sep { margin: 0 0.5rem; color: var(--border-strong); }

/* ---- Responsive ---- */
@media (max-width: 720px) {
  /* Drop the desktop's viewport-locked panes and let the page flow/scroll naturally,
     so the file list and the preview each get real height instead of being squeezed. */
  body { height: auto; }
  #main, .viewer, .split { display: block; min-height: 0; }
  .toolbar { position: sticky; top: 0; z-index: 5; }

  .tree-pane {
    width: auto; max-height: 45vh; overflow-y: auto;
    border-right: none; border-bottom: 1px solid var(--border);
  }
  .tree-head { position: sticky; top: 0; background: var(--bg-panel); z-index: 1; }

  .preview-pane { min-height: 80vh; }
  .preview-body { max-height: none; }

  .dropzone { margin: 0.8rem; min-height: 60vh; }

  /* Comfortable tap targets and a touch of breathing room on small screens. */
  .tree-row { padding: 0.5rem; }
  .btn { padding: 0.5rem 0.8rem; }
  .view-toggle button { padding: 0.4rem 0.7rem; }
}