:root {
  --color-bg: #f4f5f8;
  --color-surface: #ffffff;
  --color-surface-2: #f8f9fb;
  --color-border: #e3e6eb;
  --color-border-strong: #cdd1d9;
  --color-text: #14181f;
  --color-muted: #5b6470;
  --color-muted-2: #8a909a;

  --color-accent: #4f46e5;
  --color-accent-hover: #3f37cf;
  --color-accent-soft: #eef0ff;

  --color-danger: #b3261e;
  --color-danger-soft: #fde9e7;
  --color-success: #047857;
  --color-success-soft: #e2f6ec;
  --color-warning: #b76e00;
  --color-warning-soft: #fff2db;
  --color-info-soft: #e8f0fe;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(20,24,31,.04);
  --shadow: 0 1px 3px rgba(20,24,31,.06), 0 4px 12px rgba(20,24,31,.04);
  --shadow-lg: 0 4px 12px rgba(20,24,31,.08), 0 12px 32px rgba(20,24,31,.06);

  --transition: 150ms ease;

  font-family:
    -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

code {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: .85em;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1px 6px;
}

/* ---------------------------------------------------------------- topbar */

header.topbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: .85rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
}

header.topbar .brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.01em;
  color: var(--color-text);
  margin-right: 1.75rem;
}
header.topbar .brand a { color: inherit; text-decoration: none; }
header.topbar .brand .dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-right: .55rem;
  vertical-align: 1px;
}

header.topbar nav {
  display: inline-flex;
  gap: .25rem;
}
header.topbar nav a {
  color: var(--color-muted);
  font-weight: 500;
  font-size: .92rem;
  padding: .4rem .75rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}
header.topbar nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

header.topbar .right {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: var(--color-muted);
  font-size: .9rem;
}
header.topbar .right .user-email { color: var(--color-text); font-weight: 500; }

/* ---------------------------------------------------------------- layout */

main.container {
  max-width: 1120px;
  margin: 2rem auto 4rem;
  padding: 0 1.75rem;
}

h1 {
  font-size: 1.65rem;
  margin: 0 0 .25rem;
  letter-spacing: -.02em;
  font-weight: 650;
}
h2 {
  font-size: 1.05rem;
  margin: 0 0 1rem;
  letter-spacing: -.01em;
  font-weight: 600;
}
h3 {
  font-size: .95rem;
  margin: 1.25rem 0 .5rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}

p { margin: 0 0 .75rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.card.compact { padding: 1.1rem 1.4rem; }

/* ---------------------------------------------------------------- table */

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}
th, td {
  text-align: left;
  padding: .8rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
th {
  background: transparent;
  font-weight: 500;
  font-size: .78rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}
tbody tr { transition: background var(--transition); }
tbody tr:hover { background: var(--color-surface-2); }
tbody tr:last-child td { border-bottom: none; }

td .actions { display: inline-flex; gap: .35rem; flex-wrap: wrap; }

/* ---------------------------------------------------------------- buttons */

.btn,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  padding: .5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  font-size: .9rem;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition),
              transform var(--transition);
  text-decoration: none;
  line-height: 1.2;
}
.btn:hover,
button:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-strong);
  text-decoration: none;
}
.btn:active,
button:active { transform: translateY(1px); }
.btn:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary,
button.primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, var(--shadow-sm);
}
.btn-primary:hover,
button.primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
}

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

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-muted);
}
.btn-ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
  border-color: transparent;
}

.btn-sm { padding: .35rem .7rem; font-size: .82rem; }
.btn-lg { padding: .65rem 1.25rem; font-size: 1rem; }

.btn-link {
  background: transparent;
  border: none;
  color: var(--color-accent);
  padding: 0;
  font: inherit;
  font-weight: 500;
}
.btn-link:hover { background: transparent; text-decoration: underline; }

/* ---------------------------------------------------------------- forms */

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="search"], input[type="url"],
select, textarea {
  width: 100%;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: .6rem .8rem;
  font: inherit;
  font-size: .92rem;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}
textarea { min-height: 90px; resize: vertical; }

input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--color-accent);
}

label {
  display: block;
  font-weight: 500;
  font-size: .85rem;
  color: var(--color-muted);
  margin: 1rem 0 .35rem;
}
label:first-child { margin-top: 0; }

.form-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.form-row > * { flex: 1 1 220px; }

/* ---------------------------------------------------------------- flash */

.flash {
  padding: .85rem 1.1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  border: 1px solid transparent;
  font-size: .92rem;
}
.flash.info    { background: var(--color-info-soft);    color: #1f4ea0; border-color: #d4e2fb; }
.flash.success { background: var(--color-success-soft); color: var(--color-success); border-color: #c2ead5; }
.flash.error   { background: var(--color-danger-soft);  color: var(--color-danger);  border-color: #f4c8c4; }
.flash.warning { background: var(--color-warning-soft); color: var(--color-warning); border-color: #f3dfb1; }

/* ---------------------------------------------------------------- helpers */

.muted { color: var(--color-muted); }
.small { font-size: .85rem; }
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .82rem; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  font-size: .72rem;
  background: var(--color-surface-2);
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: 99px;
  padding: 2px 9px;
  margin-left: .25rem;
  font-weight: 500;
  letter-spacing: .02em;
  text-transform: lowercase;
}
.tag.write    { background: var(--color-success-soft); color: var(--color-success); border-color: transparent; }
.tag.read     { background: var(--color-info-soft);    color: #1f4ea0;              border-color: transparent; }
.tag.admin    { background: #f1e7fb; color: #6d28d9; border-color: transparent; }
.tag.disabled { background: var(--color-danger-soft);  color: var(--color-danger);  border-color: transparent; }
.tag.twofa    { background: var(--color-warning-soft); color: var(--color-warning); border-color: transparent; }

.toolbar {
  display: flex;
  gap: .65rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.toolbar .spacer { flex: 1; }
.toolbar h1 { margin: 0; }

form.inline { display: inline; }

footer.appfoot {
  text-align: center;
  color: var(--color-muted-2);
  padding: 2.5rem 1rem 1.5rem;
  font-size: .8rem;
}

/* ---------------------------------------------------------------- dropzone */

.dropzone {
  position: relative;
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  background: var(--color-surface-2);
  color: var(--color-muted);
  transition: background var(--transition), border-color var(--transition);
  cursor: pointer;
}
.dropzone:hover,
.dropzone.is-dragover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-text);
}
.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}
.dropzone .dz-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  margin-bottom: .65rem;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 1.2rem;
}
.dropzone .dz-title {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: .15rem;
}
.dropzone .dz-hint {
  display: block;
  font-size: .82rem;
}

/* selected file list (filled by JS) */

.file-queue {
  margin-top: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  overflow: hidden;
}
.file-queue:empty { display: none; }
.file-queue-header {
  padding: .6rem 1rem;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.file-queue-header .qty { color: var(--color-text); }
.file-queue-list { list-style: none; margin: 0; padding: 0; }
.file-queue-list li {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .65rem 1rem;
  border-top: 1px solid var(--color-border);
  font-size: .9rem;
}
.file-queue-list li:first-child { border-top: none; }
.file-queue-list .ico {
  flex: 0 0 auto;
  width: 28px; height: 28px;
  border-radius: 6px;
  background: var(--color-surface-2);
  color: var(--color-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.file-queue-list .ico.pdf  { background: #fde9e7; color: #b3261e; }
.file-queue-list .ico.doc, .file-queue-list .ico.docx { background: #e1ecff; color: #1d4ed8; }
.file-queue-list .ico.xls, .file-queue-list .ico.xlsx { background: #e2f6ec; color: #047857; }
.file-queue-list .ico.ppt, .file-queue-list .ico.pptx { background: #ffe9da; color: #c2410c; }
.file-queue-list .ico.png, .file-queue-list .ico.jpg, .file-queue-list .ico.jpeg { background: #f1e7fb; color: #6d28d9; }
.file-queue-list .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-queue-list .size { color: var(--color-muted); font-size: .82rem; flex: 0 0 auto; }
.file-queue-list .remove {
  border: none;
  background: transparent;
  color: var(--color-muted);
  font-size: 1.1rem;
  line-height: 1;
  padding: .15rem .35rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.file-queue-list .remove:hover { background: var(--color-danger-soft); color: var(--color-danger); }

/* invalid extension highlight */
.file-queue-list li.invalid { background: #fff5f4; }
.file-queue-list li.invalid .name { color: var(--color-danger); }
.file-queue-list li.invalid .ico { background: var(--color-danger-soft); color: var(--color-danger); }
.file-queue-list li.invalid .badge {
  font-size: .7rem;
  background: var(--color-danger-soft);
  color: var(--color-danger);
  padding: 1px 6px;
  border-radius: 99px;
  margin-right: .25rem;
}

/* ---------------------------------------------------------------- empty state */

.empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--color-muted);
}
.empty h3 {
  color: var(--color-text);
  text-transform: none;
  letter-spacing: 0;
  font-size: 1rem;
  margin: 0 0 .35rem;
}

/* ---------------------------------------------------------------- utilities */
/* Kleine, benannte Utility-Klassen als Ersatz fuer inline-styles (CSP).    */

.u-mt-0        { margin-top: 0 !important; }
.u-mt-1        { margin-top: 1rem; }
.u-mt-125      { margin-top: 1.25rem; }
.u-m-0         { margin: 0; }
.u-m-025-0-0   { margin: .25rem 0 0; }
.u-ta-right    { text-align: right; }
.u-w-240       { width: 240px; }
.u-w-1pct      { width: 1%; text-align: right; }
.u-hidden      { display: none; }
.u-flex-inline-center { display: inline-flex; align-items: center; gap: .5rem; }
.u-flex-center-gap025 { display: flex; align-items: center; gap: .25rem; flex-wrap: wrap; }
.u-flex-gap-actions   { margin-top: 1rem; display: flex; gap: .5rem; align-items: center; }
.u-flex-grow-0 { flex: 0 0 auto; }
.u-align-end   { align-self: flex-end; }
.u-center-box  { max-width: 420px; margin: 4rem auto; }
.u-qr-box      { background: #fff; padding: .5rem; border: 1px solid var(--color-border); border-radius: 6px; }
.u-code-chip   { background: var(--color-surface-2); border: 1px solid var(--color-border); padding: 2px 6px; border-radius: 4px; }
.u-truncate    { max-width: 380px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

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

@media (max-width: 720px) {
  header.topbar { flex-direction: column; align-items: flex-start; gap: .5rem; padding: .75rem 1rem; }
  header.topbar nav { flex-wrap: wrap; }
  main.container { padding: 0 1rem; margin-top: 1rem; }
  .card { padding: 1.1rem 1.1rem; }
  th, td { padding: .65rem .5rem; }
  .toolbar { gap: .35rem; }
}