:root {
  --bg: #0b0c0f;
  --bg-elev: #14161b;
  --bg-elev-2: #1b1e25;
  --border: #262932;
  --border-soft: #1e2128;
  --text: #e7e9ee;
  --text-dim: #9aa0ac;
  --text-mute: #6a7180;
  --accent: #6ea8ff;
  --accent-soft: rgba(110, 168, 255, 0.12);
  --danger: #ff6a6a;
  --success: #5dd39e;
  --warn: #ffb454;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
body { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }
body.centered { display: flex; align-items: center; justify-content: center; min-height: 100vh; }

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

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 16px;
  color: var(--text);
  margin-bottom: 28px;
  padding: 0 4px;
}
.brand-mark { width: 24px; height: 24px; color: var(--accent); }
.side-nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px;
  background: transparent; border: 0;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500;
  text-align: left; width: 100%;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.nav-item:hover { background: var(--bg-elev-2); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }

.side-foot {
  border-top: 1px solid var(--border);
  padding-top: 14px; margin-top: 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.me { display: flex; align-items: center; gap: 10px; padding: 0 4px; }
.avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 13px;
  text-transform: uppercase;
}
.me-text { line-height: 1.2; }
.me-name { font-weight: 600; font-size: 13px; }
.me-role { font-size: 11px; }

/* ---------- Content ---------- */
.content { padding: 0; min-width: 0; }
.view { padding: 24px 28px 60px; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 18px; min-height: 36px;
  flex-wrap: wrap;
}
.topbar-title { margin: 0; font-size: 18px; font-weight: 600; }

.crumbs {
  display: flex; align-items: center; gap: 4px;
  font-size: 14px; color: var(--text-dim);
  flex-wrap: wrap;
}
.crumbs button {
  background: transparent; border: 0;
  color: var(--text-dim);
  padding: 4px 8px; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 14px;
  font-family: inherit;
}
.crumbs button:hover { background: var(--bg-elev-2); color: var(--text); }
.crumbs button.current { color: var(--text); font-weight: 600; }
.crumbs .sep { color: var(--text-mute); user-select: none; }

.actions { display: flex; align-items: center; gap: 8px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  font-size: 13px; font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  transition: background .12s, border-color .12s, color .12s, transform .05s;
}
.btn:hover { background: var(--bg-elev-2); border-color: #353945; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #0b0c0f; }
.btn.primary:hover { background: #84b6ff; border-color: #84b6ff; }
.btn.ghost { background: transparent; border-color: transparent; color: var(--text-dim); }
.btn.ghost:hover { background: var(--bg-elev-2); color: var(--text); }
.btn.danger { color: var(--danger); border-color: rgba(255,106,106,0.3); }
.btn.danger:hover { background: rgba(255,106,106,0.08); border-color: var(--danger); }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.icon-btn {
  background: transparent; border: 0;
  color: var(--text-dim);
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 18px; line-height: 1;
}
.icon-btn:hover { background: var(--bg-elev-2); color: var(--text); }

/* ---------- File table ---------- */
.file-table {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.row {
  display: grid;
  grid-template-columns: 1fr 110px 180px 60px;
  align-items: center;
  padding: 0 16px;
  height: 44px;
  border-top: 1px solid var(--border-soft);
  gap: 12px;
}
.row:first-child, .row.head { border-top: 0; }
.row.head {
  height: 36px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .03em;
  color: var(--text-mute);
  background: var(--bg-elev-2);
}
.row.item { cursor: pointer; transition: background .08s; user-select: none; }
.row.item .name { cursor: pointer; }
.row.item:hover { background: var(--bg-elev-2); }
.row.item:hover .col-actions { opacity: 1; }

.col-name { display: flex; align-items: center; gap: 10px; min-width: 0; }
.col-name .icon { width: 18px; height: 18px; flex: 0 0 18px; color: var(--text-dim); }
.col-name .icon.folder { color: var(--accent); }
.col-name .name {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  cursor: pointer;
}
.col-name .name:hover { color: var(--accent); }
.col-size, .col-date { color: var(--text-dim); font-size: 13px; font-variant-numeric: tabular-nums; }
.col-actions {
  opacity: 0;
  display: flex; gap: 2px; justify-content: flex-end;
  transition: opacity .12s;
}

.dropzone { position: relative; }
.empty {
  text-align: center; padding: 60px 20px;
  color: var(--text-dim);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.empty.small { padding: 20px; }
.empty p { margin: 6px 0; }

.drop-overlay {
  position: fixed; inset: 0;
  background: rgba(11, 12, 15, 0.85);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; pointer-events: none;
}
.drop-card {
  border: 2px dashed var(--accent);
  background: var(--accent-soft);
  color: var(--text);
  padding: 40px 60px;
  border-radius: var(--radius);
  font-size: 18px; font-weight: 600;
}

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); }
.modal-card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: min(440px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  display: flex; flex-direction: column;
}
.modal-card header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.modal-card header h3 { margin: 0; font-size: 16px; font-weight: 600; }
.modal-card > div { padding: 18px; overflow: auto; }

/* ---------- Forms ---------- */
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; }
.form label > span { font-size: 12px; font-weight: 600; color: var(--text-dim); }
.form input[type=text], .form input[type=password], .form input:not([type]), .form input[type=number] {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font: inherit;
  width: 100%;
  outline: none;
  transition: border-color .12s, background .12s;
}
.form input:focus { border-color: var(--accent); background: var(--bg-elev); }
.form .row-fields { display: flex; gap: 10px; }
.form .row-fields > * { flex: 1; }
.form .actions-end { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.form .check {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-dim);
  cursor: pointer;
}
.form .check input { accent-color: var(--accent); }

.error {
  padding: 8px 12px;
  background: rgba(255,106,106,0.1);
  border: 1px solid rgba(255,106,106,0.25);
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-size: 13px;
}
.muted { color: var(--text-dim); }
.small { font-size: 12px; }

/* ---------- Auth (login page) ---------- */
.auth-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  width: min(360px, calc(100vw - 32px));
}
.auth-card .brand { margin-bottom: 24px; }
.auth-card h1 { margin: 0 0 4px; font-size: 20px; font-weight: 600; }
.auth-card .form { margin-top: 22px; }
.auth-card .btn { justify-content: center; padding: 10px; }

/* ---------- Users (admin) ---------- */
.user-table {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.user-row {
  display: grid;
  grid-template-columns: 1.2fr 120px 120px auto;
  align-items: center;
  padding: 0 16px;
  height: 52px;
  border-top: 1px solid var(--border-soft);
  gap: 12px;
}
.user-row:first-child { border-top: 0; }
.user-row.head {
  height: 36px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .03em;
  color: var(--text-mute);
  background: var(--bg-elev-2);
}
.user-row .uname { display: flex; align-items: center; gap: 10px; font-weight: 500; }
.user-row .uname .avatar { width: 28px; height: 28px; font-size: 12px; }
.tag {
  display: inline-block; padding: 2px 8px;
  border-radius: 999px; font-size: 11px; font-weight: 600;
  background: var(--bg-elev-2); color: var(--text-dim);
  border: 1px solid var(--border);
}
.tag.owner { background: rgba(255,180,84,.1); color: var(--warn); border-color: rgba(255,180,84,.3); }
.tag.write { background: rgba(93,211,158,.1); color: var(--success); border-color: rgba(93,211,158,.3); }
.tag.read  { background: var(--bg-elev-2); color: var(--text-dim); }
.user-row .root-path {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px; color: var(--text-dim);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.user-row .row-actions { display: flex; justify-content: flex-end; gap: 4px; }

/* ---------- Speed widget (bottom-right, only during transfers) ---------- */
.speed-widget {
  position: fixed; bottom: 20px; right: 20px;
  z-index: 250;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 10px 14px;
  font: 12px ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--text-dim);
  display: flex; flex-direction: column; gap: 6px;
  min-width: 230px;
}
.speed-row {
  display: grid;
  grid-template-columns: 14px 1fr 80px 36px auto;
  align-items: center;
  gap: 8px;
}
.speed-stop {
  background: var(--danger);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 2px 9px;
  font: 600 11px -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: filter .1s;
}
.speed-stop:hover { filter: brightness(1.1); }
.speed-stop:active { filter: brightness(0.9); }
.speed-row.up .speed-arrow { color: var(--accent); }
.speed-row.down .speed-arrow { color: var(--success); }
.speed-arrow { font-size: 14px; text-align: center; }
.speed-value { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
.speed-bar {
  display: block;
  height: 4px;
  background: var(--bg-elev-2);
  border-radius: 999px;
  overflow: hidden;
}
.speed-row.up .speed-bar-fill { background: var(--accent); }
.speed-row.down .speed-bar-fill { background: var(--success); }
.speed-bar-fill { display: block; height: 100%; transition: width .2s linear; }
.speed-pct { color: var(--text-mute); text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Toasts (lifted above speed widget) ---------- */
.toasts {
  position: fixed; bottom: 90px; right: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 300;
}
.toast {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  box-shadow: var(--shadow);
  min-width: 220px;
  animation: toast-in .2s ease-out;
}
.toast.error { border-left-color: var(--danger); }
.toast.success { border-left-color: var(--success); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ---------- Sidebar tree ---------- */
.sidebar-tree {
  display: flex; flex-direction: column;
  margin: 4px 0 8px;
  gap: 1px;
}
.tree-group, .tree-leaf {
  background: transparent; border: 0;
  color: var(--text-dim);
  font: inherit; font-size: 13px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  display: flex; align-items: center; gap: 8px;
  width: 100%;
  font-family: inherit;
  transition: background .1s, color .1s;
}
.tree-group { font-weight: 600; color: var(--text); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.tree-group:hover, .tree-leaf:hover { background: var(--bg-elev-2); color: var(--text); }
.tree-leaf.active { background: var(--accent-soft); color: var(--accent); }
.tree-leaf.active .tree-icon { color: var(--accent); }
.tree-chevron {
  display: inline-flex; align-items: center; justify-content: center;
  width: 14px; height: 14px;
  color: var(--text-mute);
  transition: transform .12s;
}
.tree-group.open .tree-chevron { transform: rotate(90deg); }
.tree-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 14px; height: 14px;
  color: var(--text-dim);
  flex: 0 0 auto;
}
.tree-name {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  flex: 1;
}
.tree-leaf.drop-target,
.tree-group.drop-target {
  background: var(--accent-soft);
  outline: 2px dashed var(--accent);
  outline-offset: -2px;
  color: var(--accent);
}

/* ---------- Drag-and-drop on rows ---------- */
.row.item.dragging { opacity: 0.4; }
.row.item.drop-target {
  background: var(--accent-soft);
  outline: 2px dashed var(--accent);
  outline-offset: -2px;
}

/* ---------- Folder badges (private / shared) ---------- */
.col-name .icon.folder.private { color: #ff8aa3; }
.col-name .icon.folder.shared  { color: #5dd39e; }
.col-name .icon.folder.public  { color: var(--accent); }

.name-wrap { display: flex; align-items: center; gap: 8px; min-width: 0; flex: 1; }
.name-wrap .name { min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer; }
.name-wrap .name:hover { color: var(--accent); }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 600;
  padding: 2px 7px; border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev-2);
  color: var(--text-dim);
  flex: 0 0 auto;
}
.badge svg { display: block; }
.badge.private { color: #ff8aa3; border-color: rgba(255,138,163,.3); background: rgba(255,138,163,.08); }
.badge.shared  { color: #5dd39e; border-color: rgba(93,211,158,.3);  background: rgba(93,211,158,.08); }
.badge.public  { color: var(--accent); border-color: rgba(110,168,255,.3); background: var(--accent-soft); }

/* ---------- Context menu ---------- */
.ctx-menu {
  position: fixed; z-index: 250;
  min-width: 200px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 5px;
  display: flex; flex-direction: column; gap: 1px;
}
.ctx-item {
  background: transparent; border: 0;
  text-align: left;
  padding: 8px 12px;
  color: var(--text);
  border-radius: 4px;
  font: inherit; font-size: 13px;
  cursor: pointer;
}
.ctx-item:hover { background: var(--bg-elev-2); }
.ctx-item.danger { color: var(--danger); }
.ctx-item.danger:hover { background: rgba(255,106,106,.08); }
.ctx-divider { height: 1px; background: var(--border-soft); margin: 4px 0; }

/* ---------- Role cards (user create form) ---------- */
.role-picker { display: flex; flex-direction: column; gap: 8px; }
.role-card {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--bg);
  transition: border-color .12s, background .12s;
}
.role-card:hover { background: var(--bg-elev-2); }
.role-card input[type=radio] { margin-top: 3px; accent-color: var(--accent); }
.role-card:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.role-name { font-weight: 600; font-size: 13px; }
.role-desc { margin-top: 2px; }

/* ---------- Assign-to-members checklist ---------- */
.check-list {
  display: flex; flex-direction: column; gap: 4px;
  max-height: 280px; overflow: auto;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.check-row {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 9px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
}
.check-row:hover { background: var(--bg-elev-2); }
.check-row input[type=checkbox] { accent-color: var(--accent); flex: 0 0 auto; }
.check-row .check-row-main {
  display: flex; align-items: center; gap: 8px;
  flex: 1; min-width: 0;
}
.check-row .avatar.small { width: 22px; height: 22px; font-size: 11px; }

/* Tag color overrides for new roles */
.tag.owner   { background: rgba(255,180,84,.1);  color: var(--warn);   border-color: rgba(255,180,84,.3); }
.tag.coowner { background: rgba(110,168,255,.12); color: var(--accent); border-color: rgba(110,168,255,.3); }
.tag.member  { background: var(--bg-elev-2);     color: var(--text-dim); border-color: var(--border); }

/* ---------- Responsive ---------- */
/* Mobile topbar (hamburger) — hidden on desktop, shown ≤720px */
.mobile-topbar { display: none; }
.sidebar-overlay { display: none; }

@media (max-width: 720px) {
  body { grid-template-columns: 1fr; }

  .mobile-topbar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
  }
  .mobile-topbar .brand { margin: 0; }
  .hamburger {
    background: transparent; border: 0; color: var(--text);
    padding: 6px; cursor: pointer; border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
  }
  .hamburger:hover, .hamburger:active { background: var(--bg-elev-2); }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 280px;
    max-width: 85vw;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    z-index: 100;
    overflow-y: auto;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.6);
  }
  .sidebar.open { transform: translateX(0); }

  .sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 99;
  }
  .sidebar-overlay.open { display: block; }

  .view { padding: 16px; }
  .row { grid-template-columns: 1fr 80px 60px; }
  .col-date { display: none; }
  .col-actions { opacity: 1; }
  .user-row { grid-template-columns: 1fr auto; }
  .user-row > :nth-child(2), .user-row > :nth-child(3), .user-row > :nth-child(4) { display: none; }
}
  .brand { margin-bottom: 0; }
  .side-nav { flex-direction: row; gap: 4px; flex: 1; }
  .nav-item { padding: 7px 10px; }
  .side-foot { border-top: 0; padding-top: 0; margin-top: 0; flex-direction: row; gap: 8px; }
  .me-text { display: none; }
  .view { padding: 16px; }
  .row { grid-template-columns: 1fr 80px 60px; }
  .col-date { display: none; }
  .col-actions { opacity: 1; }
  .user-row { grid-template-columns: 1fr auto; }
  .user-row > :nth-child(2), .user-row > :nth-child(3), .user-row > :nth-child(4) { display: none; }
}

/* ---------- PWA / iOS polish ---------- */

/* Use dynamic viewport so iOS Safari's URL bar doesn't crop the layout */
html, body { min-height: 100dvh; }
body { min-height: 100dvh; }
body.centered { min-height: 100dvh; }

/* Kill the default tap-highlight square iOS draws on every touch */
* { -webkit-tap-highlight-color: transparent; }

/* Inputs >=16px or iOS zooms in on focus */
input, select, textarea, button { font-size: 16px; }

/* Respect the iPhone notch / home indicator when running as a PWA */
@supports (padding: max(0px)) {
  .sidebar {
    padding-top: max(20px, env(safe-area-inset-top));
    padding-left: max(16px, env(safe-area-inset-left));
  }
  .view {
    padding-bottom: max(24px, env(safe-area-inset-bottom));
    padding-right: max(24px, env(safe-area-inset-right));
  }
  body.centered {
    padding: env(safe-area-inset-top) env(safe-area-inset-right)
             env(safe-area-inset-bottom) env(safe-area-inset-left);
  }
}

/* Bigger touch targets on phones */
@media (max-width: 720px) and (pointer: coarse) {
  .nav-item, .crumbs button, .btn, .row {
    min-height: 44px;  /* Apple HIG minimum tappable size */
  }
  .row { padding: 8px 10px; }
  .col-actions button { min-width: 36px; min-height: 36px; }
}

/* When launched as standalone PWA from home screen, hide any "install me" cues
   and tighten the top spacing since the status bar is translucent */
@media (display-mode: standalone) {
  .install-hint { display: none; }
}