:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #21263a;
  --border: #2e3347;
  --accent: #4f7fff;
  --accent2: #7c5cfc;
  --red: #ff4d6d;
  --orange: #ff9f43;
  --green: #2ecc71;
  --yellow: #f9ca24;
  --text: #e2e8f0;
  --muted: #8892a4;
  --sidebar-w: 230px;
}

*, *::before, *::after { box-sizing: border-box; }

html, body { height: 100%; margin: 0; padding: 0; }

.sbt-body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}

.sbt-wrapper {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── SIDEBAR ── */
.sbt-sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}

.sbt-logo {
  padding: 16px 14px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.sbt-logo-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
}

.sbt-logo-text { font-weight: 700; font-size: 14px; }
.sbt-logo-sub  { font-size: 10px; color: var(--muted); }

.sbt-nav { padding: 8px 6px; flex: 1; }

.sbt-nav-section {
  font-size: 10px; color: var(--muted);
  text-transform: uppercase; letter-spacing: .08em;
  padding: 12px 8px 4px;
}

.sbt-nav-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: 7px; cursor: pointer;
  color: var(--muted); text-decoration: none;
  transition: all .15s; margin-bottom: 1px; font-size: 12px;
}
.sbt-nav-item:hover { background: var(--surface2); color: var(--text); text-decoration: none; }
.sbt-nav-item.active { background: rgba(79,127,255,.15); color: var(--accent); }
.sbt-icon { font-size: 14px; width: 16px; text-align: center; }

/* ── Sbalitelná skupina v navigaci ── */
.sbt-nav-group { margin-bottom: 1px; }
.sbt-nav-group > summary {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: 7px; cursor: pointer;
  color: var(--muted); font-size: 12px; list-style: none;
  transition: all .15s; user-select: none;
}
.sbt-nav-group > summary::-webkit-details-marker { display: none; }
.sbt-nav-group > summary:hover { background: var(--surface2); color: var(--text); }
.sbt-nav-group[open] > summary { color: var(--text); }
.sbt-nav-group-arrow {
  margin-left: auto; font-size: 10px; transition: transform .2s;
}
.sbt-nav-group[open] .sbt-nav-group-arrow { transform: rotate(180deg); }
.sbt-nav-group-items { padding-left: 10px; }
.sbt-nav-sub { padding-left: 16px !important; }

.sbt-badge {
  margin-left: auto; background: var(--red); color: #fff;
  border-radius: 10px; padding: 1px 6px; font-size: 10px; font-weight: 700;
}
.sbt-badge-orange { background: var(--orange); }
.sbt-badge-muted  { background: var(--surface2); color: var(--muted); }

.sbt-sidebar-footer {
  padding: 10px 12px; border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.sbt-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, #6c63ff, #3ecf8e);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; flex-shrink: 0; color: #fff;
}
.sbt-avatar-name { font-size: 12px; font-weight: 600; }
.sbt-settings-btn { color: var(--muted); cursor: pointer; font-size: 16px; text-decoration: none; }
.sbt-settings-btn:hover { color: var(--text); }

/* ── MAIN ── */
.sbt-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── TOPBAR ── */
.sbt-topbar {
  padding: 11px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.sbt-topbar-title { font-size: 15px; font-weight: 700; flex: 1; }

/* ── PAGE CONTENT ── */
.sbt-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}
.sbt-content::-webkit-scrollbar { width: 5px; }
.sbt-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── CARDS & TABLES ── */
.sbt-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.sbt-card h5 {
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: .08em;
  margin-bottom: 12px;
}

.sbt-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.sbt-table th {
  color: var(--muted); font-weight: 600; font-size: 10px;
  text-transform: uppercase; letter-spacing: .06em;
  padding: 8px 12px; border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
.sbt-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.sbt-table tr:hover td { background: var(--surface2); }
.sbt-table tr:last-child td { border-bottom: none; }

/* ── FORMS ── */
.sbt-form-group { margin-bottom: 14px; }
.sbt-form-group label {
  display: block; font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 5px;
}
.sbt-input {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: 7px; padding: 8px 12px; color: var(--text);
  font-size: 13px; font-family: inherit;
}
.sbt-input:focus { outline: none; border-color: var(--accent); }
.sbt-input::placeholder { color: var(--muted); }
select.sbt-input option { background: var(--surface2); }

.sbt-textarea {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: 7px; padding: 10px 12px; color: var(--text);
  font-size: 13px; font-family: inherit; resize: vertical; min-height: 80px;
}
.sbt-textarea:focus { outline: none; border-color: var(--accent); }
.sbt-textarea::placeholder { color: var(--muted); }

/* ── BUTTONS ── */
.sbt-btn {
  padding: 7px 14px; border-radius: 7px; font-size: 12px; font-weight: 600;
  cursor: pointer; border: none; display: inline-flex; align-items: center; gap: 6px;
  transition: all .15s; text-decoration: none;
}
.sbt-btn-primary { background: var(--accent); color: #fff; }
.sbt-btn-primary:hover { background: #6b94ff; color: #fff; }
.sbt-btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.sbt-btn-ghost:hover { background: var(--surface2); color: var(--text); }
.sbt-btn-danger { background: rgba(255,77,109,.15); color: var(--red); border: 1px solid rgba(255,77,109,.3); }
.sbt-btn-danger:hover { background: rgba(255,77,109,.25); color: var(--red); }
.sbt-btn-sm { padding: 4px 10px; font-size: 11px; }

/* ── SEVERITY ── */
.sev-dot {
  width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0;
}
.sev-stop     { background: var(--red);    box-shadow: 0 0 5px var(--red); }
.sev-porucha  { background: var(--orange); }
.sev-odlozene { background: var(--muted); }
.sev-urgentni { background: var(--accent2); box-shadow: 0 0 5px var(--accent2); }
.sev-info     { background: var(--accent); }

.sbt-tag {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 10px; font-weight: 600; border: 1px solid var(--border);
  background: var(--surface2); color: var(--muted);
}
.sbt-tag-cyklovez { background: rgba(79,127,255,.15); color: var(--accent); border-color: rgba(79,127,255,.3); }
.sbt-tag-stop     { background: rgba(255,77,109,.15); color: var(--red);   border-color: rgba(255,77,109,.3); }
.sbt-tag-porucha  { background: rgba(255,159,67,.15); color: var(--orange); border-color: rgba(255,159,67,.3); }
.sbt-tag-urgentni { background: rgba(124,92,252,.15); color: var(--accent2); border-color: rgba(124,92,252,.3); }
.sbt-tag-info     { background: rgba(79,127,255,.15); color: var(--accent); border-color: rgba(79,127,255,.3); }

/* ── STATUS BADGES ── */
.sbt-status {
  display: inline-block; padding: 3px 8px; border-radius: 5px;
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
}
.stav-1 { background: rgba(255,77,109,.15);  color: var(--red); }
.stav-2 { background: rgba(255,159,67,.15);  color: var(--orange); }
.stav-3 { background: rgba(79,127,255,.15);  color: var(--accent); }
.stav-4 { background: rgba(46,204,113,.15);  color: var(--green); }

/* ── STATS ── */
.sbt-stats { display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.sbt-stat {
  flex: 1; min-width: 140px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px;
}
.sbt-stat.highlight { border-color: rgba(79,127,255,.4); background: rgba(79,127,255,.05); }
.sbt-stat-label { font-size: 11px; color: var(--muted); margin-bottom: 6px; }
.sbt-stat-value { font-size: 26px; font-weight: 700; line-height: 1; }
.sbt-stat-delta { font-size: 10px; margin-top: 4px; color: var(--muted); }

/* ── PAGINACE ── */
.sbt-pagination {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  margin-top: 16px; font-size: 12px;
}
.sbt-page-link {
  color: var(--accent); text-decoration: none; padding: 5px 10px;
  border: 1px solid var(--border); border-radius: 6px;
}
.sbt-page-link:hover { background: var(--surface2); text-decoration: none; }
.sbt-page-link.disabled {
  color: var(--muted); pointer-events: none; opacity: .4;
}
.sbt-page-info { color: var(--muted); }

/* ── CHECKLIST ── */
.sbt-check-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; background: var(--surface2);
  border: 1px solid var(--border); border-radius: 7px;
  margin-bottom: 6px; font-size: 12px; font-weight: 600; cursor: pointer;
}
.sbt-check-row input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--accent); }

/* ── FILE UPLOAD ── */
.sbt-upload-zone {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px; background: var(--surface2);
  border: 2px dashed var(--border); border-radius: 8px; cursor: pointer;
  transition: border-color .15s;
}
.sbt-upload-zone:hover { border-color: var(--accent); }
.sbt-upload-zone--drag  { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.sbt-file-list { display: flex; flex-direction: column; gap: 4px; margin-top: 6px; }
.sbt-file-row  { display: flex; justify-content: space-between; align-items: center; padding: 4px 10px; background: var(--surface2); border-radius: 6px; font-size: 12px; }
.sbt-file-remove { background: none; border: none; cursor: pointer; color: var(--muted); font-size: 11px; padding: 2px 4px; border-radius: 3px; line-height: 1; }
.sbt-file-remove:hover { color: var(--red); background: rgba(255,77,109,.1); }
.sbt-file-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; background: var(--surface2);
  border: 1px solid var(--border); border-radius: 6px; margin-top: 6px;
  font-size: 12px;
}
.sbt-file-item span.name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sbt-file-item span.size { font-size: 10px; color: var(--muted); }
.sbt-file-remove { color: var(--muted); cursor: pointer; font-size: 14px; }
.sbt-file-remove:hover { color: var(--red); }

/* ── ALERTS ── */
.sbt-alert {
  padding: 10px 14px; border-radius: 7px; font-size: 12px; margin-bottom: 14px;
}
.sbt-alert-success { background: rgba(46,204,113,.1); border: 1px solid rgba(46,204,113,.3); color: var(--green); }
.sbt-alert-danger  { background: rgba(255,77,109,.1);  border: 1px solid rgba(255,77,109,.3);  color: var(--red); }

/* ── UPLOAD PROGRESS OVERLAY ── */
.sbt-upload-progress {
  display: none; position: fixed; inset: 0; z-index: 9100;
  background: rgba(0,0,0,.6); backdrop-filter: blur(4px);
  align-items: center; justify-content: center;
}
.sbt-upload-progress.open { display: flex; }
.sbt-upload-progress-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px 32px; min-width: 320px; text-align: center;
}
.sbt-upload-progress-label { font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.sbt-upload-progress-bar-wrap {
  height: 8px; background: var(--surface2); border-radius: 4px; overflow: hidden; margin-bottom: 10px;
}
.sbt-upload-progress-bar {
  height: 100%; width: 0%; background: var(--accent);
  border-radius: 4px; transition: width .15s;
}
.sbt-upload-progress-pct { font-size: 12px; color: var(--muted); }

/* ── FILE PREVIEW MODAL ── */
.sbt-preview-overlay {
  display: none; position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,.75); backdrop-filter: blur(4px);
  align-items: center; justify-content: center;
}
.sbt-preview-overlay.open { display: flex; }
.sbt-preview-dialog {
  display: flex; flex-direction: column;
  width: 92vw; height: 90vh;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden;
}
.sbt-preview-header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sbt-preview-title { flex: 1; font-size: 13px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sbt-preview-body  { flex: 1; overflow: hidden; background: #000; }
.sbt-preview-body iframe,
.sbt-preview-body video {
  width: 100%; height: 100%; border: none; display: block;
}
.sbt-preview-body img {
  position: absolute; top: 0; left: 0;
  transform-origin: 0 0;
  max-width: none; max-height: none;
}
.sbt-preview-body { position: relative; overflow: hidden; }
.sbt-preview-body audio { height: auto; margin: auto; }

/* Bootstrap overrides */
.form-control, .form-select {
  background-color: var(--surface2) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
}
.form-control:focus, .form-select:focus {
  border-color: var(--accent) !important;
  box-shadow: none !important;
  background-color: var(--surface2) !important;
}
.form-control::placeholder { color: var(--muted) !important; }
.form-select option { background: var(--surface2); color: var(--text); }

/* ── DIALOG (detail popup) ── */
dialog.sbt-dialog {
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 18px 20px; max-width: 440px; width: 90vw;
}
dialog.sbt-dialog::backdrop { background: rgba(0,0,0,.6); }
.sbt-dialog-row {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 5px 0; border-bottom: 1px solid var(--border); font-size: 12px;
}
.sbt-dialog-row:last-child { border-bottom: none; }
.sbt-icon-btn {
  display: inline-flex; gap: 10px; background: none; border: none; padding: 0;
  cursor: pointer; font-size: 16px; line-height: 1;
}
.sbt-icon-btn:hover { opacity: .75; }