/* Kolimi web UI — modern-minimal, mobile-first.
   Light by default; dark via prefers-color-scheme or an explicit
   [data-theme] set by bootstrap.js (persisted in localStorage). */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f1f3f6;
  --fg: #0f172a;
  --muted: #64748b;
  --faint: #94a3b8;
  --border: #e5e8ec;
  --border-strong: #d3d8e0;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-fg: #ffffff;
  --accent-soft: #eef2ff;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --ok: #16a34a;
  --ok-soft: #f0fdf4;
  --warn: #d97706;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgb(16 24 40 / 0.06), 0 1px 3px rgb(16 24 40 / 0.08);
  --shadow: 0 4px 12px rgb(16 24 40 / 0.08), 0 1px 3px rgb(16 24 40 / 0.06);
  --shadow-lg: 0 18px 48px rgb(16 24 40 / 0.18);
  --ring: 0 0 0 3px rgb(99 102 241 / 0.35);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  --sidebar-w: 250px;
  --topbar-h: 60px;
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) {
    --bg: #0b0d12;
    --surface: #12151c;
    --surface-2: #181c25;
    --fg: #e6e9ef;
    --muted: #98a2b3;
    --faint: #6b7484;
    --border: #232833;
    --border-strong: #313847;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-fg: #0b0d12;
    --accent-soft: #1b2130;
    --danger: #f87171;
    --danger-soft: #2a1618;
    --ok: #4ade80;
    --ok-soft: #12251a;
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
    --shadow: 0 4px 14px rgb(0 0 0 / 0.45);
    --shadow-lg: 0 18px 48px rgb(0 0 0 / 0.6);
    --ring: 0 0 0 3px rgb(129 140 248 / 0.4);
  }
}

:root.dark {
  --bg: #0b0d12;
  --surface: #12151c;
  --surface-2: #181c25;
  --fg: #e6e9ef;
  --muted: #98a2b3;
  --faint: #6b7484;
  --border: #232833;
  --border-strong: #313847;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --accent-fg: #0b0d12;
  --accent-soft: #1b2130;
  --danger: #f87171;
  --danger-soft: #2a1618;
  --ok: #4ade80;
  --ok-soft: #12251a;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
  --shadow: 0 4px 14px rgb(0 0 0 / 0.45);
  --shadow-lg: 0 18px 48px rgb(0 0 0 / 0.6);
  --ring: 0 0 0 3px rgb(129 140 248 / 0.4);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0 0 0.5rem;
  line-height: 1.25;
  font-weight: 650;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.15rem;
}

a {
  color: var(--accent);
}

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-sm);
}

.muted {
  color: var(--muted);
}

.faint {
  color: var(--faint);
}

.hidden {
  display: none;
}

.icon {
  display: inline-flex;
  width: 1.15em;
  height: 1.15em;
  flex: none;
}

.icon svg {
  width: 100%;
  height: 100%;
}

/* ---- buttons & inputs ------------------------------------------------ */

button,
.button,
input[type="submit"] {
  font: inherit;
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  min-height: 40px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  line-height: 1;
  transition: background 0.15s ease, border-color 0.15s ease,
    box-shadow 0.15s ease, transform 0.05s ease;
}

button:hover,
.button:hover {
  background: var(--surface-2);
  border-color: var(--accent);
}

button:active,
.button:active {
  transform: translateY(1px);
}

button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}

button.primary,
.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
  font-weight: 550;
}

button.primary:hover,
.button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button.ghost,
.button.ghost {
  background: transparent;
  border-color: transparent;
}

button.ghost:hover,
.button.ghost:hover {
  background: var(--surface-2);
  border-color: transparent;
}

button.danger,
.button.danger {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, var(--border-strong));
}

button.danger:hover,
.button.danger:hover {
  background: var(--danger-soft);
  border-color: var(--danger);
}

button.active,
.button.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.icon-btn {
  padding: 0;
  width: 40px;
  min-width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}

.icon-btn:hover {
  color: var(--fg);
  background: var(--surface-2);
  border-color: transparent;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
}

input,
select,
textarea {
  font: inherit;
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
  min-height: 42px;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input::placeholder {
  color: var(--faint);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: var(--ring);
  outline: none;
}

/* ---- toasts ---------------------------------------------------------- */

/* Top-right, below the top bar: keeps clear of the bottom-right upload tray. */
.toasts {
  position: fixed;
  right: 1rem;
  top: calc(var(--topbar-h) + 0.75rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 80;
  max-width: min(92vw, 24rem);
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 0.7rem 0.75rem 0.7rem 0.9rem;
  animation: toast-in 0.18s ease;
}

.toast.error {
  border-left-color: var(--danger);
}

.toast.ok {
  border-left-color: var(--ok);
}

.toast .toast-msg {
  flex: 1;
  font-size: 0.9rem;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---- app shell ------------------------------------------------------- */

.shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100dvh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem 0.85rem;
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  height: 100dvh;
  z-index: 50;
}

.side-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.5rem 0.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.15rem;
  color: var(--fg);
  text-decoration: none;
}

.side-brand .logo {
  display: block;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  overflow: hidden;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav-item {
  justify-content: flex-start;
  gap: 0.7rem;
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  font-weight: 500;
  padding: 0.6rem 0.7rem;
  min-height: 44px;
}

.nav-item:hover {
  background: var(--surface-2);
  border-color: transparent;
  color: var(--fg);
}

.nav-item.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: transparent;
}

.nav-sep {
  height: 1px;
  background: var(--border);
  margin: 0.5rem 0.35rem;
}

.side-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.account {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.5rem;
  min-width: 0;
}

.avatar {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.account .who {
  min-width: 0;
}

.account .who b {
  display: block;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account .who small {
  color: var(--muted);
}

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100dvh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: var(--topbar-h);
  padding: 0.6rem 1rem;
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.menu-btn {
  display: none;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  flex-wrap: wrap;
  min-width: 0;
  font-weight: 550;
}

.crumb {
  border: none;
  background: none;
  color: var(--muted);
  padding: 0.3rem 0.4rem;
  min-height: 0;
  border-radius: var(--radius-sm);
}

.crumb:hover {
  background: var(--surface-2);
  color: var(--fg);
  border-color: transparent;
}

.crumb.current {
  color: var(--fg);
}

.sep {
  color: var(--faint);
}

.topbar-spacer {
  flex: 1;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  position: relative;
}

.search input {
  width: 15rem;
  padding-left: 2.1rem;
}

.search .icon {
  position: absolute;
  left: 0.65rem;
  color: var(--faint);
  pointer-events: none;
}

.segmented {
  display: inline-flex;
  padding: 2px;
  gap: 2px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.segmented button {
  min-height: 34px;
  padding: 0 0.6rem;
  border: none;
  background: transparent;
  color: var(--muted);
}

.segmented button.active {
  background: var(--surface);
  color: var(--fg);
  box-shadow: var(--shadow-sm);
  border: none;
}

.content {
  flex: 1;
  padding: 1rem 1rem 4rem;
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
  max-width: 78rem;
  width: 100%;
  margin: 0 auto;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 0.25rem 0 0.85rem;
}

.section-head h2 {
  margin: 0;
}

/* ---- file list ------------------------------------------------------- */

.files {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.file {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.55rem 0.65rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.file:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.file-open {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border: none;
  background: none;
  padding: 0;
  min-height: 0;
  text-align: left;
}

.file-open:hover {
  background: none;
  border-color: transparent;
}

.file-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--muted);
}

.file-icon .icon {
  width: 22px;
  height: 22px;
}

.file-icon.folder {
  color: var(--accent);
  background: var(--accent-soft);
}

.file-icon.img {
  overflow: hidden;
}

.file-icon.img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.file-name {
  font-weight: 550;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta {
  color: var(--muted);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin-left: auto;
}

.file-actions .icon-btn {
  width: 38px;
  min-width: 38px;
  height: 38px;
}

/* ---- grid view ------------------------------------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.75rem;
}

.tile {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    transform 0.08s ease;
}

.tile:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.tile-open {
  display: block;
  width: 100%;
  border: none;
  background: none;
  padding: 0.75rem;
  min-height: 0;
  text-align: left;
  color: inherit;
}

.tile-open:hover {
  background: none;
  border-color: transparent;
}

.tile-thumb {
  display: grid;
  place-items: center;
  height: 96px;
  margin-bottom: 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--muted);
  overflow: hidden;
}

.tile-thumb .icon {
  width: 40px;
  height: 40px;
}

.tile-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tile-thumb.folder {
  color: var(--accent);
  background: var(--accent-soft);
}

.tile-name {
  font-weight: 550;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tile-meta {
  color: var(--muted);
  font-size: 0.8rem;
}

.tile-menu {
  position: absolute;
  top: 0.4rem;
  right: 0.4rem;
  width: 34px;
  min-width: 34px;
  height: 34px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  border-color: transparent;
  backdrop-filter: blur(4px);
}

.tile-popover {
  position: absolute;
  top: 2.4rem;
  right: 0.4rem;
  z-index: 20;
  min-width: 10rem;
  padding: 0.3rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
}

.tile-popover button,
.tile-popover a {
  justify-content: flex-start;
  border: none;
  background: none;
  min-height: 38px;
  padding: 0 0.6rem;
  color: var(--fg);
  font-weight: 500;
}

.tile-popover button:hover,
.tile-popover a:hover {
  background: var(--surface-2);
}

/* ---- empty / loading ------------------------------------------------- */

.empty {
  display: grid;
  place-items: center;
  gap: 0.5rem;
  text-align: center;
  padding: 3.5rem 1rem;
  color: var(--muted);
}

.empty .icon {
  width: 40px;
  height: 40px;
  color: var(--faint);
}

.skeleton {
  height: 66px;
  border-radius: var(--radius);
  background: linear-gradient(
    90deg,
    var(--surface) 25%,
    var(--surface-2) 37%,
    var(--surface) 63%
  );
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
}

@keyframes shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

.badge {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 999px;
  padding: 0.05rem 0.5rem;
  white-space: nowrap;
}

/* ---- login ----------------------------------------------------------- */

.login-wrap {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  position: relative;
  background: radial-gradient(
      1200px 500px at 20% -10%,
      var(--accent-soft),
      transparent 60%
    ),
    var(--bg);
}

.login-theme {
  position: absolute;
  top: max(1rem, env(safe-area-inset-top));
  right: 1rem;
}

.login {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
  max-width: 23rem;
}

.login .hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  text-align: center;
}

.login .hero .logo {
  display: block;
  width: 52px;
  height: 52px;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.login input {
  width: 100%;
}

.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--faint);
  font-size: 0.8rem;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ---- cards, modals, dialogs ----------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  max-width: 44rem;
  margin: 1rem auto;
}

.pad {
  padding: 1rem;
}

.backdrop {
  position: fixed;
  inset: 0;
  background: rgb(9 12 18 / 0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 70;
  animation: fade-in 0.15s ease;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal {
  width: 100%;
  max-width: 38rem;
  margin: 0;
  max-height: 86vh;
  overflow: auto;
  animation: pop-in 0.16s ease;
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.modal-head h2 {
  margin: 0;
}

.shares {
  list-style: none;
  margin: 0.5rem 0;
  padding: 0;
}

.share-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: end;
  border-top: 1px solid var(--border);
  padding-top: 0.9rem;
  margin-top: 0.5rem;
}

.share-form label {
  flex: 1 1 10rem;
}

.created {
  margin-top: 0.75rem;
  padding: 0.75rem 0.9rem;
  border: 1px dashed color-mix(in srgb, var(--accent) 55%, var(--border));
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
}

.created code {
  display: block;
  overflow-wrap: anywhere;
  margin: 0.25rem 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

/* Legacy list rows (dialogs, public share page). */
.row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  padding: 0.5rem 0.35rem;
  border-bottom: 1px solid var(--border);
}

.row:last-child {
  border-bottom: none;
}

.row .name {
  flex: 1;
  min-width: 0;
  flex-wrap: wrap;
  border: none;
  background: none;
  text-align: left;
  color: var(--fg);
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 0;
}

.row .name:hover {
  background: none;
  border-color: transparent;
}

.row .size {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 4.5rem;
  text-align: right;
  font-size: 0.85rem;
}

.row-actions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.row-actions button,
.row-actions .button {
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
  min-height: 34px;
}

.thumb {
  width: 34px;
  height: 34px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ---- public share page (.top header) -------------------------------- */

.top {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 30;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-decoration: none;
}

.error {
  color: var(--danger);
  margin: 0.25rem 0;
}

.notice {
  color: var(--ok);
  margin: 0.25rem 0;
}

/* ---- TOTP enrollment ------------------------------------------------- */

.totp-enroll {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
  margin: 0.5rem 0 1rem;
}

.totp-enroll .qr svg {
  background: #fff;
  padding: 8px;
  border-radius: 8px;
}

.totp-enroll code {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  font-family: var(--mono);
}

.recovery-codes ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem 1rem;
  font-family: var(--mono);
  margin: 0.25rem 0 0.75rem;
}

/* ---- responsive ------------------------------------------------------ */

.nav-scrim {
  display: none;
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(84vw, var(--sidebar-w));
    transform: translateX(-102%);
    transition: transform 0.22s ease;
    box-shadow: var(--shadow-lg);
    padding-top: max(1rem, env(safe-area-inset-top));
  }

  .shell.nav-open .sidebar {
    transform: none;
  }

  .shell.nav-open .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    background: rgb(9 12 18 / 0.5);
    z-index: 45;
  }

  .menu-btn {
    display: inline-flex;
  }

  .topbar {
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }

  .topbar-title {
    flex: 1;
  }

  .topbar-actions {
    order: 3;
    width: 100%;
    flex-wrap: wrap;
  }

  .search {
    flex: 1;
  }

  .search input {
    width: 100%;
  }

  .file-actions {
    flex-basis: 100%;
    justify-content: flex-end;
    margin-left: 0;
  }

  .content {
    padding-bottom: 5rem;
  }
}

@media (min-width: 861px) {
  .nav-scrim {
    display: none !important;
  }
}

/* Tile actions: revealed on hover/focus, always visible on touch. */
.tile-actions {
  display: flex;
  gap: 0.15rem;
  padding: 0 0.5rem 0.5rem;
  justify-content: flex-end;
}

.tile-actions .icon-btn {
  width: 34px;
  min-width: 34px;
  height: 34px;
}

@media (hover: hover) {
  .tile-actions {
    opacity: 0;
    transition: opacity 0.15s ease;
  }

  .tile:hover .tile-actions,
  .tile:focus-within .tile-actions {
    opacity: 1;
  }
}

@media (max-width: 640px) {
  .hide-sm {
    display: none;
  }
}

/* ---- polish ---------------------------------------------------------- */

::selection {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
}

.modal,
.content {
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.modal::-webkit-scrollbar,
.content::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.modal::-webkit-scrollbar-thumb,
.content::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
  border: 3px solid transparent;
  background-clip: content-box;
}

.file-meta {
  overflow-wrap: anywhere;
}

.section-head h2 {
  font-size: 1.05rem;
}

.modal-head h2 {
  font-size: 1.2rem;
}

.lead-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--muted);
}

.lead-icon .icon {
  width: 18px;
  height: 18px;
}

.modal h3 {
  margin: 1.4rem 0 0.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 1rem;
}

.modal > p.muted {
  font-size: 0.9rem;
  margin: 0.15rem 0 0.7rem;
}

/* Drag-and-drop upload overlay. */
.dropzone {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: none;
  place-items: center;
  pointer-events: none;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  box-shadow: inset 0 0 0 3px var(--accent);
}

.dropzone.active {
  display: grid;
}

.dropzone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem 2rem;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 2px dashed var(--accent);
  box-shadow: var(--shadow-lg);
  font-weight: 550;
}

.dropzone-inner .icon {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.dropzone-inner p {
  margin: 0;
}


.enroll-qr {
  text-align: center;
  margin: 10px 0;
}

.qr {
  display: inline-block;
  padding: 10px;
  background: #ffffff;
  border-radius: 10px;
}

.qr svg {
  display: block;
  width: 180px;
  height: 180px;
}

/* ---- Storage ring (sidebar) ---- */
.storage {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.storage-ring {
  display: flex;
  align-items: center;
  gap: 12px;
}

.storage-ring svg {
  width: 46px;
  height: 46px;
  transform: rotate(-90deg);
  flex: none;
}

.ring-bg {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 3.6;
}

.ring-fg {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3.6;
  stroke-linecap: round;
  transition: stroke-dasharray 0.3s ease;
}

.storage-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.storage-info b {
  font-size: 14px;
}

.storage-info small {
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Context menu ---- */
.ctx-scrim {
  position: fixed;
  inset: 0;
  z-index: 60;
}

.ctx-menu {
  position: fixed;
  z-index: 61;
  min-width: 190px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  display: flex;
  flex-direction: column;
}

.ctx-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 0;
  background: transparent;
  color: var(--fg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  text-align: left;
  text-decoration: none;
}

.ctx-item:hover {
  background: var(--surface-2);
}

.ctx-item.danger {
  color: var(--danger);
}

.ctx-item .icon {
  width: 18px;
  height: 18px;
}

/* ---- Lightbox ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgb(0 0 0 / 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox img {
  max-width: 92vw;
  max-height: 86vh;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
}

.lightbox-text {
  max-width: 92vw;
  max-height: 78vh;
  overflow: auto;
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  text-align: left;
}

.lightbox-bar {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border-radius: 999px;
  padding: 8px 16px;
  box-shadow: var(--shadow-lg);
}

.lightbox-name {
  max-width: 50vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}

/* ---- Skeletons ---- */
.skeleton-list {
  pointer-events: none;
}

.sk {
  display: block;
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--border) 37%, var(--surface-2) 63%);
  background-size: 400% 100%;
  animation: sk 1.4s ease infinite;
  border-radius: 6px;
}

.sk-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  flex: none;
}

.sk-line {
  height: 10px;
  width: 180px;
  max-width: 100%;
}

.sk-line.short {
  width: 90px;
  margin-top: 8px;
}

@keyframes sk {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sk {
    animation: none;
  }
}

/* ---- Upload tray ---- */
.upload-tray {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 55;
  width: min(320px, calc(100vw - 36px));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.upload-tray-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.upload-tray ul {
  list-style: none;
  margin: 0;
  padding: 6px;
  max-height: 40vh;
  overflow: auto;
}

.upload-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 10px;
  padding: 6px 8px;
}

.upload-name {
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-status {
  font-size: 12px;
  display: flex;
  align-items: center;
}

.upload-status .ok {
  color: var(--ok);
}

.upload-bar {
  grid-column: 1 / -1;
  height: 5px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}

.upload-bar-fill {
  display: block;
  height: 100%;
  background: var(--accent);
  transition: width 0.2s ease;
}

/* ---- Bulk selection ---- */
.bulk-bar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  margin-bottom: 12px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.bulk-count {
  font-weight: 600;
  margin-right: auto;
}

.file.selected,
.tile.selected {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
}