/* ── Variables ──────────────────────────────────────────────────────────── */
:root {
  --primary:   #2563eb;
  --primary-h: #1d4ed8;
  --success:   #16a34a;
  --success-h: #15803d;
  --danger:    #dc2626;
  --warning:   #d97706;
  --bg:        #f1f5f9;
  --card:      #ffffff;
  --text:      #1e293b;
  --muted:     #64748b;
  --border:    #e2e8f0;
  --radius:    10px;
  --shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */
.container {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: .875rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -.5px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.25rem;
  font-size: .9rem;
}
.nav-links a:hover { color: var(--text); }

main { padding: 1.75rem 0 3rem; }

/* ── Login ──────────────────────────────────────────────────────────────── */
.login-body {
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.75rem;
  width: 100%;
  max-width: 380px;
}

.login-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
}

/* ── Card ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.card-muted { background: #f8fafc; }

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: .5rem;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: .875rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  width: 100%;
  transition: background .15s, transform .1s;
  -webkit-tap-highlight-color: transparent;
}

.btn:active { transform: scale(.98); }

.btn-primary   { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-h); }

.btn-success   { background: var(--success); color: #fff; }
.btn-success:hover { background: var(--success-h); }

.btn-secondary { background: var(--border); color: var(--text); }
.btn-secondary:hover { background: #d1d9e6; }

.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }

.btn-sm {
  padding: .5rem 1rem;
  font-size: .875rem;
  width: auto;
}

/* ── Form ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }

label {
  display: block;
  font-weight: 600;
  font-size: .875rem;
  margin-bottom: .4rem;
  color: var(--text);
}

input[type="password"],
input[type="text"],
.search-input {
  width: 100%;
  padding: .75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  color: var(--text);
  background: var(--card);
  transition: border-color .15s;
}

input:focus, .search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

/* ── Upload area ────────────────────────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  margin-bottom: 1rem;
  user-select: none;
}

.upload-area:hover, .upload-area.drag-over {
  border-color: var(--primary);
  background: #eff6ff;
}

.upload-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.upload-title { font-weight: 600; font-size: 1.05rem; margin-bottom: .4rem; }
.upload-hint  { color: var(--muted); font-size: .875rem; }

.file-list { margin-top: 1rem; }
.file-item {
  display: inline-block;
  background: #dcfce7;
  color: #166534;
  border-radius: 6px;
  padding: .25rem .75rem;
  margin: .25rem;
  font-size: .875rem;
  font-weight: 500;
}

/* ── Badges ─────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .3rem .7rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.badge-high   { background: #dcfce7; color: #166534; }
.badge-medium { background: #fef9c3; color: #713f12; }
.badge-low    { background: #fee2e2; color: #991b1b; }

/* ── Alerts ─────────────────────────────────────────────────────────────── */
.alert {
  padding: .875rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: .9rem;
}

.alert-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-warning { background: #fef9c3; color: #713f12; border: 1px solid #fde68a; }

/* ── Spinner ────────────────────────────────────────────────────────────── */
.text-center { text-align: center; }

.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .9s linear infinite;
  margin: 1.5rem auto;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Meta grid (review page) ────────────────────────────────────────────── */
.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  margin-bottom: 1rem;
}

@media (max-width: 500px) {
  .meta-grid { grid-template-columns: 1fr; }
}

.meta-label { font-size: .8rem; font-weight: 600; color: var(--muted); margin-bottom: .2rem; text-transform: uppercase; letter-spacing: .04em; }
.meta-value { font-weight: 600; }
.meta-section { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }

/* ── Keywords ───────────────────────────────────────────────────────────── */
.keywords { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .4rem; }
.keyword {
  background: #eff6ff;
  color: var(--primary);
  padding: .2rem .65rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 500;
}

.keywords.small .keyword { font-size: .75rem; padding: .15rem .55rem; }

/* ── Path display (review) ──────────────────────────────────────────────── */
.path-display {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .875rem 1rem;
  margin: .75rem 0;
  word-break: break-all;
}

.path-display code { font-size: .95rem; color: var(--text); }

.new-folder-notice {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: .6rem 1rem;
  color: var(--primary);
  font-size: .875rem;
  font-weight: 600;
  margin-bottom: .75rem;
}

.reasoning { margin-top: .5rem; font-style: italic; }

.filename-preview {
  display: block;
  font-size: .85rem;
  color: var(--muted);
  margin-top: .4rem;
  word-break: break-all;
}

/* ── Action buttons ─────────────────────────────────────────────────────── */
.action-buttons {
  display: flex;
  flex-direction: column;
  gap: .875rem;
  margin-top: 1.25rem;
}

@media (min-width: 500px) {
  .action-buttons { flex-direction: row; }
  .action-buttons > * { flex: 1; }
}

/* ── Page title ─────────────────────────────────────────────────────────── */
.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

/* ── Overview ───────────────────────────────────────────────────────────── */
.overview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.search-form {
  display: flex;
  gap: .5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-form .search-input { flex: 1; min-width: 180px; }

.doc-list { display: flex; flex-direction: column; gap: .75rem; }

.doc-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.doc-main { flex: 1; min-width: 0; }

.doc-title-row {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: .3rem;
}

.doc-type { font-weight: 700; font-size: .95rem; }
.doc-sender { color: var(--muted); font-size: .875rem; }

.doc-meta-row {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: .4rem;
}

.doc-path { font-family: monospace; font-size: .78rem; }
.doc-summary { font-size: .85rem; color: var(--muted); margin-top: .4rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.doc-actions { flex-shrink: 0; }

/* ── Empty state ────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--muted);
}

.empty-state p { margin-bottom: 1.25rem; }

/* ── Utilities ──────────────────────────────────────────────────────────── */
.text-muted { color: var(--muted); }
.small      { font-size: .85rem; }