/* Files — tokens for the three themes (Pro, Light, Classic 98), base and the app layout. */
:root {
  --font-ui: 'Inter Tight', 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  --fs: 13px; --fs-s: 11.5px; --top-h: 52px; --side-w: 236px; --info-w: 300px; --radius: 8px; --radius-s: 6px;
  --bg: #0c0e12; --panel: #12151b; --panel-2: #191e26; --surface: #0a0b0e; --line: #1f252f; --line-2: #2c3443;
  --fg: #eaecf1; --dim: #99a4bb; --faint: #5e6d8c; --accent: #ffeae8; --accent-ink: #0a0a0a; --accent-line: #ffeae8;
  --accent-soft: rgba(255, 234, 232, .12); --hover: #1c212a; --active: #252b37; --input: #0d0f14; --sel-bg: rgba(255, 234, 232, .1); --sel-line: rgba(255, 234, 232, .55);
  --danger: #ff5a6e; --ok: #f5c1bd; --checker: #212732; --checker-2: #181d25;
  --shadow: 0 18px 50px rgba(0, 0, 0, .55), 0 2px 8px rgba(0, 0, 0, .35); --bevel: none; --bevel-in: none;
  --sui-bg: var(--panel); --sui-bg2: var(--panel-2); --sui-input: var(--input); --sui-line: var(--line-2); --sui-fg: var(--fg); --sui-dim: var(--dim); --sui-faint: var(--faint);
  --sui-hover: var(--hover); --sui-sel: var(--active); --sui-accent: var(--accent); --sui-accent-ink: var(--accent-ink); --sui-radius: 6px; --sui-shadow: var(--shadow); --sui-font: var(--font-ui); --sui-mono: var(--mono);
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #e4e7ed; --panel: #f5f6f8; --panel-2: #e9ebf0; --surface: #eef0f4; --line: #d2d7e1; --line-2: #bbc3d2;
  --fg: #0a0a0a; --dim: #465269; --faint: #7b8aa7; --accent: #ffeae8; --accent-ink: #0a0a0a; --accent-line: #e60f00;
  --accent-soft: rgba(255, 129, 120, .16); --hover: #e3e7ed; --active: #d6dbe4; --input: #fff; --sel-bg: rgba(255, 158, 151, .18); --sel-line: #ff2e1f;
  --danger: #d0263f; --ok: #dc0f00; --checker: #dde0e8; --checker-2: #edeff3;
  --shadow: 0 16px 44px rgba(40, 30, 10, .2), 0 2px 6px rgba(40, 30, 10, .12);
  color-scheme: light;
}
:root[data-theme="classic"] {
  --font-ui: Tahoma, 'MS Sans Serif', 'Microsoft Sans Serif', 'Segoe UI', Geneva, Verdana, sans-serif; --mono: 'Lucida Console', 'Courier New', monospace;
  --fs: 11px; --fs-s: 11px; --radius: 0; --radius-s: 0; --top-h: 40px;
  --bg: #c0c0c0; --panel: #c0c0c0; --panel-2: #c0c0c0; --surface: #fff; --line: #808080; --line-2: #808080;
  --fg: #000; --dim: #222; --faint: #6d6d6d; --accent: #000080; --accent-ink: #fff; --accent-line: #000080;
  --accent-soft: rgba(0, 0, 128, .12); --hover: #cbd1dc; --active: #000080; --input: #fff; --sel-bg: #000080; --sel-line: #000080;
  --danger: #a00000; --ok: #006000; --checker: #cbd1dc; --checker-2: #fff;
  --shadow: 2px 2px 0 rgba(0, 0, 0, .55);
  --bevel: inset -1px -1px #0a0a0a, inset 1px 1px #fff, inset -2px -2px #808080, inset 2px 2px #dfdfdf;
  --bevel-in: inset -1px -1px #fff, inset 1px 1px #0a0a0a, inset -2px -2px #dfdfdf, inset 2px 2px #808080;
  --sui-radius: 0; color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { overflow: hidden; background: var(--bg); color: var(--fg); font: var(--fs)/1.4 var(--font-ui); -webkit-font-smoothing: antialiased; -webkit-tap-highlight-color: transparent; overscroll-behavior: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .4; }
[hidden] { display: none !important; }
.ic { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
:focus-visible { outline: 2px solid var(--accent-line); outline-offset: 2px; }

.app { display: grid; height: 100%; grid-template-columns: var(--side-w) minmax(0, 1fr) auto; grid-template-rows: var(--top-h) minmax(0, 1fr); grid-template-areas: 'top top top' 'side main info'; }
.topbar { grid-area: top; display: flex; align-items: center; gap: 10px; padding: 0 12px; background: var(--panel); border-bottom: 1px solid var(--line); min-width: 0; }
/* One height in the header: the search, New, the icon buttons and the shared header buttons (shared/ui/hbtn.css). */
.topbar { --tlbx-hbtn-h: 34px; --tlbx-hbtn-radius: var(--radius-s); --tlbx-hbtn-bg: var(--panel-2); --tlbx-hbtn-line: var(--line-2); --tlbx-hbtn-hover: var(--hover); --tlbx-hbtn-fs: 13px; }
.topbar .btn { height: var(--tlbx-hbtn-h); }
.brand { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--accent); flex: none; }
.brand-mark { width: 17px; height: 17px; fill: var(--accent-ink); }
.appname { display: grid; line-height: 1.1; margin-right: 8px; white-space: nowrap; }
.appname b { font-size: 14px; letter-spacing: -.01em; }
.home-link { color: var(--faint); font: 10.5px var(--mono); text-decoration: none; }
.home-link:hover { color: var(--fg); }
.search { flex: 1; max-width: 560px; display: flex; align-items: center; gap: 8px; height: 34px; padding: 0 10px; background: var(--input); border: 1px solid var(--line-2); border-radius: 999px; color: var(--faint); }
.search:focus-within { border-color: var(--accent-line); color: var(--fg); }
.search input { flex: 1; min-width: 0; border: 0; background: none; outline: none; height: 100%; }
.tb-group { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.tb { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 0; border-radius: var(--radius-s); background: none; color: var(--dim); }
.tb:hover, .tb[aria-pressed="true"] { background: var(--hover); color: var(--fg); }
.btn { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border: 1px solid var(--line-2); border-radius: var(--radius-s); background: var(--panel-2); color: var(--fg); white-space: nowrap; }
.btn:hover { background: var(--hover); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { color: var(--danger); }
.inp { height: 30px; padding: 0 8px; border: 1px solid var(--line-2); border-radius: var(--radius-s); background: var(--input); color: var(--fg); }
.only-mobile { display: none; }

.side { grid-area: side; display: flex; flex-direction: column; min-height: 0; background: var(--panel); border-right: 1px solid var(--line); }
.main { grid-area: main; display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--surface); position: relative; }
.bar { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-bottom: 1px solid var(--line); background: var(--panel); min-height: 48px; }
.crumbs { flex: 1; display: flex; align-items: center; gap: 2px; min-width: 0; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.crumb { border: 0; background: none; padding: 4px 7px; border-radius: var(--radius-s); color: var(--dim); font-size: 14px; max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
.crumb:last-child { color: var(--fg); font-weight: 600; }
.crumb:hover, .crumb.drop { background: var(--hover); color: var(--fg); }
.crumb.drop { box-shadow: inset 0 0 0 2px var(--accent-line); }
.crumbs .sep { width: 14px; height: 14px; color: var(--faint); }
.bar-tools { display: flex; align-items: center; gap: 6px; }
.seg { display: flex; padding: 2px; gap: 2px; border-radius: var(--radius-s); background: var(--input); border: 1px solid var(--line-2); }
.seg button { display: grid; place-items: center; width: 30px; height: 26px; border: 0; border-radius: 4px; background: none; color: var(--faint); }
.seg button:hover { color: var(--fg); }
.seg button[aria-pressed="true"] { background: var(--active); color: var(--fg); }
.pane { flex: 1; min-height: 0; overflow: auto; position: relative; outline: none; user-select: none; -webkit-user-select: none; }
.status { display: flex; gap: 12px; align-items: center; height: 26px; padding: 0 12px; border-top: 1px solid var(--line); background: var(--panel); color: var(--faint); font-size: var(--fs-s); white-space: nowrap; overflow: hidden; }
.status .msg { margin-left: auto; color: var(--dim); }
.selbar { display: flex; align-items: center; gap: 6px; padding: 6px 12px; background: var(--sel-bg); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.selbar b { margin-right: 6px; }
.selbar .btn { height: 28px; padding: 0 10px; }
.dropzone { position: fixed; inset: 0; z-index: 900; display: grid; place-items: center; background: rgba(0, 0, 0, .45); pointer-events: none; }
.dropzone > div { display: grid; gap: 4px; text-align: center; padding: 30px 40px; border: 2px dashed var(--accent-line); border-radius: 16px; background: var(--panel); color: var(--dim); }
.dropzone b { color: var(--fg); font-size: 18px; }
.marquee { position: absolute; z-index: 5; border: 1px solid var(--sel-line); background: var(--sel-bg); pointer-events: none; }

/* Upload strip above the file pane (shared/drop, compact) */
.drv-dropstrip { margin: 8px 12px 0; padding: 6px 10px; border: 1px dashed var(--line, #333b4c); border-radius: 8px; }
/* The whole pane and the folder tree take dropped files, and Upload is in the toolbar and the empty state, so the strip
 * (the TlbxDrop zone) shows only while it has something to say: files being added, or what the last drop did. */