:root {
  --bg: #f4f8ff;
  --bg-soft: #dce8fb;
  --bg-grad-a: #f8fbff;
  --bg-grad-b: #dde8fb;
  --card: #ffffff;
  --text: #20304a;
  --muted: #667792;
  --accent: #1473e6;
  --border: #ccdaee;
  --ok: #0e9f6e;
}

body[data-theme="solarized"] {
  --bg: #e2d8b5;
  --bg-soft: #d2c59b;
  --bg-grad-a: #eadfbc;
  --bg-grad-b: #c9bb8f;
  --card: #f3e8c5;
  --text: #3f4b4d;
  --muted: #58686a;
  --accent: #9b7700;
  --border: #bca879;
  --ok: #1f8d7c;
}

body[data-theme="dark"] {
  --bg: #0e1624;
  --bg-soft: #1b2a40;
  --bg-grad-a: #13233a;
  --bg-grad-b: #0b1322;
  --card: #152136;
  --text: #dfebff;
  --muted: #9eb0d0;
  --accent: #4db3ff;
  --border: #2f4566;
  --ok: #45d3a1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Verdana", sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-grad-a), var(--bg), var(--bg-grad-b));
  overflow-x: hidden;
}

.shell {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 40px auto;
  padding: 0 16px;
}

.card {
  background: color-mix(in srgb, var(--card) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 12px 24px rgba(8, 25, 56, 0.12);
  padding: 20px;
}

.panel { display: none; }
.panel.active { display: block; animation: fadein .35s ease; }
.hidden { display: none; }

h1, h2 { margin: 0 0 8px; }

.subtitle { margin: 0 0 14px; color: var(--muted); }

label { display: block; font-size: 0.92rem; margin: 10px 0 6px; }

input, select, button {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
  padding: 10px 12px;
  background: var(--card);
  color: var(--text);
}

input::placeholder {
  color: var(--muted);
  opacity: 1;
}

button {
  margin-top: 14px;
  border: none;
  background: linear-gradient(100deg, var(--accent), var(--ok));
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

button.ghost {
  margin-top: 0;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: auto;
}

.hint code {
  background: var(--bg-soft);
  border-radius: 6px;
  padding: 2px 6px;
}

.error {
  color: #cf3a3a;
  min-height: 20px;
  margin: 8px 0 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.controls {
  display: flex;
  gap: 10px;
  align-items: center;
}

.controls select { width: 160px; }

.tree-wrap {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 14px;
  background: color-mix(in srgb, var(--card) 85%, transparent);
}

.admin {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.admin-form {
  display: grid;
  grid-template-columns: 1fr 1fr 180px auto;
  gap: 10px;
  align-items: center;
}

.admin-form button { margin-top: 0; }

.users-box {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: color-mix(in srgb, var(--card) 90%, transparent);
}

.users-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.users-head h4 {
  margin: 0;
}

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

.users-actions input,
.users-actions select {
  min-width: 160px;
}

.users-grid {
  display: grid;
  gap: 8px;
}

.user-row {
  display: grid;
  grid-template-columns: 1fr 170px auto;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
}

.user-tools {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.user-tools button {
  margin-top: 0;
  padding: 7px 9px;
}

dialog {
  border: none;
  background: transparent;
}

dialog::backdrop {
  background: rgba(9, 17, 29, 0.45);
}

#passwordForm {
  min-width: min(92vw, 420px);
  display: grid;
  gap: 10px;
}

#passwordTitle {
  margin: 0 0 4px;
  color: var(--text);
}

#ownPasswordTitle {
  margin: 0 0 4px;
  color: var(--text);
}

#ownPasswordForm {
  min-width: min(92vw, 430px);
  display: grid;
  gap: 10px;
}

#ownPasswordForm label,
#passwordForm label {
  margin: 2px 0 -2px;
  color: var(--text);
  font-weight: 600;
}

.dialog-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: center;
}

.dialog-actions button,
.dialog-actions .ghost {
  width: 100%;
  margin-top: 0;
}

.user-email {
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.user-row button {
  margin-top: 0;
  padding: 8px 10px;
}

.tree-title { font-weight: 700; margin-bottom: 10px; color: var(--muted); }

.tree, .tree ul {
  list-style: none;
  margin: 0;
  padding-left: 18px;
}

.tree li { margin: 4px 0; }

.node {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}

.toggle {
  width: 16px;
  display: inline-block;
  font-weight: 700;
  cursor: pointer;
  color: var(--accent);
}

.icon { width: 18px; text-align: center; }

.folder-name { cursor: pointer; }

.collapsed > ul { display: none; }

a.file-link {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px dotted var(--muted);
}

a.file-link:hover { color: var(--accent); }

.brand-icon {
  width: 24px;
  height: 24px;
  margin-right: 6px;
  vertical-align: -4px;
}

.preview {
  position: fixed;
  max-width: 340px;
  max-height: 210px;
  overflow: auto;
  z-index: 20;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
  padding: 10px;
  font-size: 0.85rem;
  white-space: pre-wrap;
}

@keyframes fadein {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 760px) {
  .shell { margin: 18px auto; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .controls { width: 100%; }
  .controls select { width: 100%; }
  .admin-form { grid-template-columns: 1fr; }
  .user-row { grid-template-columns: 1fr; }
  .users-head { flex-direction: column; align-items: flex-start; }
  .users-actions { width: 100%; flex-direction: column; }
  .users-actions input,
  .users-actions select,
  .users-actions button { width: 100%; }
}