/* ============================================================
   Pipal Leaf — theme.css
   h5ai-inspired directory listing theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@300;400;500;600&display=swap');

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --font-ui:   'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Light */
  --bg:          #f5f4f0;
  --surface:     #ffffff;
  --surface-2:   #efefeb;
  --border:      #dddcd7;
  --text:        #1a1917;
  --muted:       #7a7870;
  --accent:      #2d6a4f;
  --accent-fg:   #ffffff;
  --accent-dim:  #d8ede3;
  --danger:      #c0392b;
  --icon-folder: #e5a624;
  --shadow:      0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.06);
  --radius:      6px;
  --sidebar-w:   260px;
  --topbar-h:    52px;
  --transition:  background .2s, color .2s, border-color .15s, box-shadow .15s;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg:          #141412;
  --surface:     #1e1d1b;
  --surface-2:   #2a2926;
  --border:      #353330;
  --text:        #e8e6e1;
  --muted:       #7a7870;
  --accent:      #52b788;
  --accent-fg:   #0f1f17;
  --accent-dim:  #1a3d2b;
  --danger:      #e05c50;
  --icon-folder: #f0b429;
  --shadow:      0 1px 3px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.25);

  color-scheme: dark;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 14px; scroll-behavior: smooth; }

body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  transition: var(--transition);
}

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

/* ── App shell ───────────────────────────────────────────── */
.app {
  display: grid;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-areas:
    "topbar topbar"
    "sidebar main";
  min-height: 100vh;
}

/* ── Topbar ──────────────────────────────────────────────── */
.topbar {
  grid-area: topbar;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: -.2px;
  text-decoration: none;
}
.brand .material-symbols-outlined {
  color: var(--accent);
  font-size: 20px;
}
.brand strong { font-weight: 600; }

/* Search */
.search {
  flex: 1;
  max-width: 440px;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
}
.search .material-symbols-outlined {
  position: absolute;
  left: 10px;
  font-size: 17px;
  color: var(--muted);
  pointer-events: none;
}
.search input {
  width: 100%;
  padding: 7px 80px 7px 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}
.search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
  background: var(--surface);
}
.search input::placeholder { color: var(--muted); }

.shortcut {
  position: absolute;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  pointer-events: none;
  white-space: nowrap;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); border-color: var(--accent); }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.ghost:hover { background: var(--surface-2); border-color: var(--border); }
.btn.icon-only { padding: 6px 8px; }
.btn .material-symbols-outlined { font-size: 18px; }

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  grid-area: sidebar;
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--surface);
}

.side-inner { padding: 12px 0 24px; }

.side-group {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.side-group:last-child { border-bottom: none; }

.side-group h4 {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

/* Storage card */
.storage-card p {
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.6;
  color: var(--muted);
}
.storage-card p:first-child { color: var(--text); font-weight: 500; }
.storage-card .material-symbols-outlined { font-size: 16px; color: var(--accent); }

/* Quota card */
.quota { font-size: 12px; }
.quota strong { font-size: 13px; }
.badge {
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  padding: 1px 8px;
  font-weight: 500;
}
.bar {
  height: 6px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
}
.bar span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width .4s ease;
}

/* ── Folder tree nav ─────────────────────────────────────── */
nav#folder-tree { margin-top: 2px; }

ul.nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul.nav ul.nav { padding-left: 16px; display: none; }
ul.nav li.expanded > ul.nav { display: block; }

ul.nav li { position: relative; }

.folder-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius);
  padding: 4px 6px;
  transition: background .1s;
  cursor: pointer;
}
.folder-label:hover { background: var(--surface-2); }
.folder-label a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 13px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: none;
}
.folder-label a .material-symbols-outlined {
  font-size: 17px;
  color: var(--icon-folder);
  flex-shrink: 0;
}
.folder-label .toggle {
  font-size: 16px;
  color: var(--muted);
  transition: transform .2s;
  flex-shrink: 0;
}
li.expanded > .folder-label .toggle { transform: rotate(90deg); }
li.active > .folder-label { background: var(--accent-dim); }
li.active > .folder-label a { color: var(--accent); font-weight: 500; }

/* ── Main content ────────────────────────────────────────── */
.main {
  grid-area: main;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--topbar-h));
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: var(--topbar-h);
  z-index: 10;
}

.spacer { flex: 1; }

.seg {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.seg button {
  padding: 5px 11px;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 12px;
  cursor: pointer;
  transition: background .1s, color .1s;
}
.seg button:last-child { border-right: none; }
.seg button:hover { background: var(--surface-2); color: var(--text); }
.seg button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-fg);
}

/* ── Parent directory row ───────────────────────────────── */
#files-view li.parent-dir {
  grid-template-columns: 22px 1fr;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  margin: 0 -8px 4px;
  padding: 7px 8px;
  background: transparent !important;
}
#files-view li.parent-dir .material-symbols-outlined {
  color: var(--icon-folder);
}
#files-view li.parent-dir a {
  color: var(--muted);
  font-size: 13px;
}
#files-view li.parent-dir a:hover { color: var(--accent); }

/* ── File list ───────────────────────────────────────────── */
#files-view {
  list-style: none;
  padding: 0 16px;
  margin: 8px 4px;
  flex: 1;
}

#files-view.hidden { display: none; }

#files-view li {
  display: grid;
  grid-template-columns: 22px 1fr auto 28px;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius);
  border-bottom: 1px solid transparent;
  cursor: default;
  transition: background .1s;
  animation: fadeIn .15s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(3px); }
  to   { opacity: 1; transform: translateY(0); }
}

#files-view li:hover { background: var(--surface-2); }
#files-view li:hover .three-dot { opacity: 1; }

#files-view li .material-symbols-outlined {
  font-size: 18px;
  color: var(--muted);
  flex-shrink: 0;
}

/* folder icon colour */
#files-view li[data-ext="folder"] .material-symbols-outlined {
  color: var(--icon-folder);
}

#files-view li a {
  color: var(--text);
  font-size: 13.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}
#files-view li a:hover { color: var(--accent); text-decoration: none; }

.meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
}

.three-dot {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  border-radius: 4px;
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .1s, color .1s;
}
.three-dot:hover { background: var(--surface-2); color: var(--text); }
.three-dot .material-symbols-outlined { font-size: 18px; }

/* Empty state */
#empty-state {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 60px 20px;
  color: var(--muted);
  font-size: 14px;
}
#empty-state .material-symbols-outlined { font-size: 48px; opacity: .3; }
#empty-state.visible { display: flex; }

/* ── Context menu ────────────────────────────────────────── */
#ctx-menu {
  position: fixed;
  z-index: 9999;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 160px;
  padding: 4px 0;
  display: none;
  font-size: 13px;
  animation: popIn .1s ease;
}
@keyframes popIn {
  from { opacity: 0; transform: scale(.96); }
  to   { opacity: 1; transform: scale(1); }
}
#ctx-menu.visible { display: block; }
#ctx-menu button {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 14px;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  cursor: pointer;
  transition: background .1s;
  text-align: left;
}
#ctx-menu button:hover { background: var(--surface-2); }
#ctx-menu button .material-symbols-outlined { font-size: 16px; color: var(--muted); }
#ctx-menu hr { border: none; border-top: 1px solid var(--border); margin: 4px 0; }

/* ── Search results overlay ──────────────────────────────── */
#search-results {
  position: absolute;
  top: calc(var(--topbar-h) + 48px);
  left: calc(var(--sidebar-w) + 12px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 200;
  max-height: 520px;
  min-width: 320px;
  max-width: 980px;
  overflow-y: auto;
  display: none;
}
#search-results.visible { display: block; }
#search-results li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background .1s;
}
#search-results li:last-child { border-bottom: none; }
#search-results li:hover { background: var(--surface-2); }
#search-results li.active { background: var(--surface-2); }
#search-results li.active a { color: var(--accent); }
#search-results li .material-symbols-outlined { font-size: 17px; color: var(--muted); }
#search-results li a { color: var(--text); font-size: 13px; flex: 1; }
#search-results .result-path { font-size: 11px; color: var(--muted); font-family: var(--font-mono); }

/* ── Footer ──────────────────────────────────────────────── */
.footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  font-size: 12px;
  color: var(--muted);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-left { display: flex; align-items: center; gap: 14px; }
.footer-right { display: flex; align-items: center; gap: 10px; }
.footer-right a { color: var(--muted); transition: color .1s; }
.footer-right a:hover { color: var(--accent); }
.footer-right .material-symbols-outlined { font-size: 17px; }

/* ── Modal ───────────────────────────────────────────────── */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0,0,0,.45);
  align-items: center;
  justify-content: center;
  animation: fadeOverlay .15s ease;
}
@keyframes fadeOverlay {
  from { opacity: 0; } to { opacity: 1; }
}
.modal.open { display: flex; }

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 28px 28px 22px;
  min-width: 320px;
  max-width: 480px;
  width: 90%;
  position: relative;
  animation: slideUp .15s ease;
}
@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
.modal-content h2 { font-size: 16px; margin-bottom: 8px; }
.modal-content p  { font-size: 13px; color: var(--muted); margin-bottom: 20px; }

.modal-actions { display: flex; gap: 8px; justify-content: flex-end; }
.modal-actions button {
  padding: 7px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  cursor: pointer;
  transition: background .1s;
}
.modal-actions button:hover { background: var(--surface-2); }
.modal-actions #modal-download {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
.modal-actions .danger { color: var(--danger); border-color: var(--danger); }

.close-modal {
  position: absolute;
  top: 14px; right: 16px;
  font-size: 20px;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}
.close-modal:hover { color: var(--text); }

/* ── Toast ───────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--bg);
  font-size: 13px;
  padding: 8px 18px;
  border-radius: 99px;
  box-shadow: var(--shadow);
  opacity: 0;
  transition: opacity .2s, transform .2s;
  pointer-events: none;
  white-space: nowrap;
  z-index: 9999;
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ── Back-to-top button ──────────────────────────────────── */
#back-to-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 400;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .2s, transform .2s, color .12s, background .12s;
}
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
#back-to-top:hover {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
#back-to-top .material-symbols-outlined { font-size: 18px; }

/* ── Sidebar backdrop (mobile) ───────────────────────────── */
#sidebar-backdrop {
  display: none;
  position: fixed;
  inset: var(--topbar-h) 0 0 0;
  background: rgba(0,0,0,.35);
  z-index: 49;
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
}
#sidebar-backdrop.visible { display: block; }

/* ── Sort arrow ──────────────────────────────────────────── */
.seg button .sort-arrow {
  font-size: 10px;
  margin-left: 2px;
  transition: opacity .15s;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 720px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }
  .sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    width: 100vw;
    height: calc(100vh - var(--topbar-h));
    z-index: 50;
    box-shadow: var(--shadow);
    visibility: hidden;
    transform: translateX(-100%);
    transition: transform .26s cubic-bezier(.4,0,.2,1), visibility 0s .26s;
  }
  .sidebar.open {
    visibility: visible;
    transform: translateX(0);
    transition: transform .26s cubic-bezier(.4,0,.2,1), visibility 0s 0s;
  }
  .btn.menu { display: inline-flex; }
  .shortcut { display: none; }
  #back-to-top { bottom: 20px; right: 16px; }
}
@media (min-width: 721px) {
  .btn.menu { display: none; }
  #sidebar-backdrop { display: none !important; }
}

/* Sidebar resizer handle (desktop) */
#sidebar-resizer {
  width: 8px;
  position: fixed;
  top: 0;
  left: calc(var(--sidebar-w));
  height: 100vh;
  z-index: 60;
  cursor: col-resize;
  background: transparent;
  transition: background .12s;
}
#sidebar-resizer:hover { background: rgba(0,0,0,0.03); }

@media (max-width: 720px) {
  #sidebar-resizer { display: none; }
}

/* Normalize material icon appearance */
.material-symbols-outlined {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1;
  font-size: 18px;
}

/* Truncated names with tooltips */
#files-view li a, .folder-label a {
  max-width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}