:root {
  --c-bg: #F7F6F3;
  --c-surface: #FFFFFF;
  --c-surface2: #F0EEE9;
  --c-border: rgba(0,0,0,0.08);
  --c-border-strong: rgba(0,0,0,0.15);
  --c-text: #1A1916;
  --c-text-2: #6B6860;
  --c-text-3: #9E9C98;
  --c-accent: #1B4FD8;
  --c-accent-2: #EEF2FF;
  --c-accent-text: #1B4FD8;
  --c-success: #166534;
  --c-success-bg: #DCFCE7;
  --c-warning: #92400E;
  --c-warning-bg: #FEF3C7;
  --c-danger: #9B1C1C;
  --c-danger-bg: #FEE2E2;
  --c-info: #1E40AF;
  --c-info-bg: #DBEAFE;
  --c-sidebar-w: 240px;
  --c-topbar-h: 56px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.06);
  --font: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', monospace;
  --transition: 0.15s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ---- SIDEBAR ---- */
#sidebar {
  width: var(--c-sidebar-w);
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  overflow-x: hidden;
  transition: width var(--transition);
  z-index: 40;
}

#sidebar.collapsed {
  width: 56px;
}

#sidebar.collapsed .logo-text,
#sidebar.collapsed .nav-label,
#sidebar.collapsed .nav-item span.nav-text,
#sidebar.collapsed .user-info,
#sidebar.collapsed .nav-search {
  display: none;
}

#sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 9px;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}

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

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--c-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.logo-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: -0.02em;
}

.logo-version {
  font-size: 10px;
  color: var(--c-text-3);
  font-family: var(--font-mono);
}

.nav-search {
  position: relative;
  padding: 10px 12px;
  border-bottom: 1px solid var(--c-border);
}

.nav-search input {
  width: 100%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  padding: 6px 10px 6px 28px;
  font-size: 12px;
  font-family: var(--font);
  color: var(--c-text);
  outline: none;
  transition: border-color var(--transition);
}

.nav-search input:focus {
  border-color: var(--c-accent);
}

.nav-search input::placeholder {
  color: var(--c-text-3);
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--c-text-3);
  pointer-events: none;
}

.nav-section {
  padding: 10px 8px 4px;
}

.nav-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--c-text-3);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0 8px;
  margin-bottom: 3px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--c-text-2);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
  overflow: hidden;
  margin-bottom: 1px;
}

.nav-item svg { flex-shrink: 0; }

.nav-item:hover {
  background: var(--c-bg);
  color: var(--c-text);
}

.nav-item.active {
  background: var(--c-accent-2);
  color: var(--c-accent);
  font-weight: 500;
}

.nav-item.active svg path,
.nav-item.active svg rect,
.nav-item.active svg circle {
  opacity: 1;
}

.sidebar-footer {
  margin-top: auto;
  padding: 12px;
  border-top: 1px solid var(--c-border);
}

.user-avatar-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--c-accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow: hidden;
}

.user-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--c-text-3);
}

/* ---- MAIN AREA ---- */
#main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}

/* ---- TOPBAR ---- */
#topbar {
  height: var(--c-topbar-h);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  gap: 16px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.breadcrumb {
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text);
}

/* ---- CONTENT ---- */
#content-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--c-accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), transform 0.1s;
  white-space: nowrap;
}

.btn-primary:hover { background: #1641b4; }
.btn-primary:active { transform: scale(0.98); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: transparent;
  color: var(--c-text-2);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.btn-ghost:hover { background: var(--c-bg); color: var(--c-text); }

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: transparent;
  color: var(--c-danger);
  border: 1px solid var(--c-danger);
  border-radius: var(--radius);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition);
}

.btn-danger:hover { background: var(--c-danger-bg); }

.icon-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--c-text-2);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  flex-shrink: 0;
  position: relative;
}

.icon-btn:hover { background: var(--c-bg); color: var(--c-text); }

.notif-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 6px;
  height: 6px;
  background: #EF4444;
  border-radius: 50%;
  border: 1.5px solid white;
}

/* ---- MODAL ---- */
#modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(2px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

#modal-backdrop.hidden { display: none; }

#modal {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  width: 100%;
  max-width: 920px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.2s ease;
}

.modal-header {
  padding: 18px 20px 16px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-header h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
}

#modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

/* ---- TOAST ---- */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--c-text);
  color: white;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: slideInRight 0.2s ease, fadeOut 0.3s ease 2.7s forwards;
  pointer-events: all;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 200px;
}

.toast.success { background: #166534; }
.toast.error { background: #9B1C1C; }
.toast.info { background: var(--c-accent); }

/* ---- ANIMATIONS ---- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes slideInRight { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-border-strong); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-text-3); }

/* ---- PRINT STYLES (Drukuj / PDF) ---- */
@media print {
  #sidebar, #topbar, .toolbar, .btn-primary, .btn-ghost,
  .action-row, .pagination { display: none !important; }
  #main-area { width: 100%; }
  #content-area { padding: 0; overflow: visible; }
  .card { box-shadow: none; border: 1px solid #ddd; break-inside: avoid; }
  body { background: white; font-size: 12px; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .two-col-grid { grid-template-columns: 1fr 1fr; }
}