:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --fg: #14161a;
  --fg-muted: #565d66;
  --border: #dde1e6;
  --accent: #1a5fb4;
  --accent-fg: #ffffff;
  --nav-bg: #eef1f5;
  --danger: #b3261e;
  --radius: 10px;
  --space-1: .5rem;
  --space-2: .75rem;
  --space-3: 1.25rem;
  --space-4: 2rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1c1f26;
    --fg: #e8eaed;
    --fg-muted: #a2a9b4;
    --border: #2c313a;
    --accent: #7cb0f0;
    --accent-fg: #0b1220;
    --nav-bg: #191c22;
    --danger: #ff8a80;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "header header"
    "nav main";
  min-height: 100vh;
}

/* Header */
.app-header {
  grid-area: header;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.app-title {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -.01em;
}
.app-subtitle {
  margin: .25rem 0 0;
  font-size: .875rem;
  color: var(--fg-muted);
}

/* Nav */
nav {
  grid-area: nav;
  background: var(--nav-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: var(--space-2) 0;
}
nav a {
  position: relative;
  padding: .7rem var(--space-3);
  color: var(--fg);
  text-decoration: none;
  font-size: .9375rem;
  border-left: 3px solid transparent;
}
nav a:hover {
  background: var(--surface);
}
nav a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}
nav a[aria-current="page"] {
  background: var(--surface);
  border-left-color: var(--accent);
  font-weight: 600;
  color: var(--accent);
}

/* Main / panels */
main {
  grid-area: main;
  padding: var(--space-4);
  max-width: 860px;
}
.panel h2 {
  margin: 0 0 .25rem;
  font-size: 1.375rem;
}
.panel-desc {
  margin: 0 0 var(--space-4);
  color: var(--fg-muted);
  max-width: 60ch;
}
.panel-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}
.card-desc {
  margin: -.5rem 0 0;
  color: var(--fg-muted);
  font-size: .875rem;
}

/* Empty state */
.empty-note {
  margin: 0;
  padding: var(--space-3);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--fg-muted);
  background: var(--surface);
}

/* Form controls */
.field {
  display: flex;
  flex-direction: column;
  gap: .3rem;
}
.field-label {
  font-size: .875rem;
  color: var(--fg-muted);
}
input,
.input {
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .55rem .7rem;
}
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
}

/* Buttons */
.btn {
  font: inherit;
  font-weight: 600;
  padding: .6rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  align-self: flex-start;
}
.btn:hover { background: var(--nav-bg); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
.btn-primary:hover { filter: brightness(1.08); }

/* Status text (feedback after an action) */
.status {
  margin: 0;
  font-size: .9375rem;
  color: var(--fg-muted);
  white-space: pre-wrap;
}
.status:empty { display: none; }

/* Dropzone (file import) */
.dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 8rem;
  padding: var(--space-3);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  color: var(--fg-muted);
  cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease;
}
.dropzone:hover {
  border-color: var(--accent);
  background: var(--nav-bg);
}
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--nav-bg);
  color: var(--fg);
}
.dropzone-text { pointer-events: none; }

/* Keep keyboard focus visible on the whole zone even though the real
   input inside it is visually hidden (it's still Tab-reachable). */
.dropzone:focus-within {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

pre {
  font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-2);
  overflow: auto;
  max-height: 60vh;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Detection view: counts summary */
.counts {
  margin: 0;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--fg);
}

/* Detection view: hits table */
.hits-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: .875rem;
}
.hits-table th,
.hits-table td {
  padding: .5rem .7rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.hits-table th {
  color: var(--fg-muted);
  font-weight: 600;
  font-size: .8125rem;
}
.hits-table tbody tr:last-child td { border-bottom: none; }
.hits-table .hit-value { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.hits-table tr.hit-disabled { opacity: .5; }
.hits-table tr.hit-disabled .hit-value,
.hits-table tr.hit-disabled .hit-type { text-decoration: line-through; }
/* Ręczne wykrycie (Task 5): ten sam akcent co aktywna pozycja nawigacji,
   żeby "dodane przez usera" czytało się jednoznacznie w rzędzie tabeli. */
.hits-table tr.hit-manual td:first-child {
  border-left: 3px solid var(--accent);
}
.btn-remove {
  padding: .3rem .6rem;
  font-size: .8125rem;
  color: var(--danger);
  border-color: var(--danger);
}

/* Detection view: highlighted document preview */
.preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-2);
  white-space: pre-wrap;
  word-break: break-word;
  font: 14px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  max-height: 60vh;
  overflow: auto;
}
.preview mark {
  border-radius: 4px;
  padding: 0 .1em;
  color: inherit;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.preview mark.hl-PESEL   { background: #ffd7a8; }
.preview mark.hl-NIP     { background: #ffe08a; }
.preview mark.hl-EMAIL   { background: #a8d8ff; }
.preview mark.hl-PHONE   { background: #c9f0c5; }
.preview mark.hl-IBAN    { background: #e0c3ff; }
.preview mark.hl-POSTAL  { background: #ffc3d6; }
.preview mark:not(.hl-PESEL):not(.hl-NIP):not(.hl-EMAIL):not(.hl-PHONE):not(.hl-IBAN):not(.hl-POSTAL) {
  background: #d8dde3;
}
/* Ręczne wykrycie (Task 5): dorysowana ramka NA WIERZCHU koloru typu, żeby
   "user to dodał" było widać niezależnie od tego, jaki typ wybrał. */
.preview mark.hl-manual {
  outline: 2px dashed var(--accent);
  outline-offset: -1px;
}

@media (prefers-color-scheme: dark) {
  .preview mark.hl-PESEL   { background: #7a4a12; }
  .preview mark.hl-NIP     { background: #7a6a10; }
  .preview mark.hl-EMAIL   { background: #144a7a; }
  .preview mark.hl-PHONE   { background: #1e5c1a; }
  .preview mark.hl-IBAN    { background: #4a1e7a; }
  .preview mark.hl-POSTAL  { background: #7a1e3a; }
  .preview mark:not(.hl-PESEL):not(.hl-NIP):not(.hl-EMAIL):not(.hl-PHONE):not(.hl-IBAN):not(.hl-POSTAL) {
    background: #3a3f48;
  }
}

/* Detection view: manual marking controls (Task 5) */
.manual-mark-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}
.manual-type-select {
  min-width: 10rem;
}
.btn-mark {
  border-color: var(--accent);
  color: var(--accent);
}
.manual-status:empty { display: none; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

@media (max-width: 720px) {
  body {
    grid-template-columns: 1fr;
    grid-template-areas: "header" "nav" "main";
  }
  nav {
    flex-direction: row;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  nav a { border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  nav a[aria-current="page"] { border-left-color: transparent; border-bottom-color: var(--accent); }
  main { padding: var(--space-3); }
}

/* Pasek nowej wersji (Plan #12) — siedzi nad nagłówkiem, żeby był widoczny
   niezależnie od tego, w którym widoku stoi użytkownik. Kolory z akcentu, bo to
   informacja, nie błąd. */
.update-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
}

.update-bar button {
  background: var(--accent-fg);
  color: var(--accent);
  border: 1px solid var(--accent-fg);
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font: inherit;
  cursor: pointer;
}

/* Ostrzeżenie o stronach bez warstwy tekstowej. Kolor ostrzegawczy (--danger),
   bo mówi o niewykonanej anonimizacji, nie o stanie interfejsu. Nad nagłówkiem,
   żeby zostało widoczne po przejściu do widoku Wykrywanie. */
.scan-warning {
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, var(--surface));
  color: var(--fg);
}

.scan-warning strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--danger);
}

.scan-warning p {
  margin: 0;
}