/* ============================================
   MAIN CSS — BizFinance Pro
   Layout, sidebar, header (tokens in tokens.css)
   ============================================ */

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--page-bg);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
svg { flex-shrink: 0; }

/* ============== LAYOUT ============== */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: width var(--transition-slow), transform var(--transition-slow);
  box-shadow: var(--shadow-sidebar);
  overflow: hidden;
}

.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-slow);
}

/* ============== SIDEBAR HEADER ============== */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--sidebar-border);
  flex-shrink: 0;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), #818cf8);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.logo-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--sidebar-text-active);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
}

.logo-tag {
  font-size: 10px;
  color: var(--sidebar-text);
  font-weight: 400;
  letter-spacing: 0.3px;
}

.sidebar-toggle {
  color: var(--sidebar-text);
  padding: 6px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.sidebar-toggle:hover { background: var(--sidebar-hover); color: var(--sidebar-text-active); }

/* ============== SIDEBAR NAV ============== */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px 0 16px;
  scrollbar-width: thin;
  scrollbar-color: #2d3f59 transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: #2d3f59; border-radius: 4px; }

.nav-section {
  margin-bottom: 6px;
  padding: 0 10px;
}

.nav-label {
  display: block;
  font-size: 9.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: #475569;
  padding: 12px 8px 5px;
  white-space: nowrap;
  overflow: hidden;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
  margin-bottom: 1px;
}
.nav-item:hover { background: var(--sidebar-hover); color: var(--sidebar-text-active); }
.nav-item.active {
  background: linear-gradient(90deg, #1e3a5f 0%, #1e2d4a 100%);
  color: var(--sidebar-text-active);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -10px; top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 0 3px 3px 0;
}

.nav-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.8;
}
.nav-item.active .nav-icon, .nav-item:hover .nav-icon { opacity: 1; }

.nav-badge {
  margin-left: auto;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--color-danger);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.nav-badge--warning { background: var(--color-warning); }
.nav-badge:empty { display: none; }

/* ============== SIDEBAR FOOTER ============== */
.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}

.btn-backup {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
}
.btn-backup:hover { background: var(--sidebar-hover); color: var(--sidebar-text-active); }
.btn-backup--import { color: #64748b; }

.sidebar-brand-credit {
  padding: 10px 10px 4px;
  font-size: 10px;
  line-height: 1.55;
  color: #475569;
  text-align: center;
  border-top: 1px solid var(--sidebar-border);
  margin-top: 2px;
}
.sidebar-brand-credit strong {
  color: #64748b;
  font-weight: 600;
  display: block;
}
.sidebar.sidebar--collapsed .sidebar-brand-credit { display: none; }

/* ============== TOP HEADER ============== */
.top-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 16px;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.06), 0 1px 2px -1px rgb(0 0 0 / 0.04);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  overflow: hidden;
  min-width: 0;
}

.mobile-menu-btn {
  display: none;
  color: var(--text-secondary);
  padding: 6px;
  border-radius: var(--radius-sm);
}
.mobile-menu-btn:hover { background: var(--page-bg); }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  letter-spacing: -0.1px;
}
.breadcrumb-home { overflow: hidden; text-overflow: ellipsis; }

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-date {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

.backup-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--color-success);
  background: var(--color-success-light);
  padding: 5px 10px;
  border-radius: var(--radius-full);
  cursor: default;
  border: 1px solid #a7f3d0;
  white-space: nowrap;
}
.backup-status[hidden] {
  display: none !important;
}
.backup-status--warning { color: var(--color-warning); background: var(--color-warning-light); border-color: #fde68a; }
.backup-status--danger  { color: var(--color-danger);  background: var(--color-danger-light);  border-color: #fca5a5; }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-light); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.currency-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 5px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  border: 1px solid #c7d2fe;
  white-space: nowrap;
}

/* ============== PAGE CONTENT ============== */
.page-content {
  flex: 1;
  padding: 28px 28px 40px;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  min-width: 0;
}

/* ============== PAGE HEADER ============== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  min-width: 0;
}

.page-title-group { flex: 1; min-width: 0; }

.page-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.4px;
  line-height: 1.2;
  margin-bottom: 2px;
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.4;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* ============== CARD ============== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.05);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.card-body { padding: 20px; }
.card-body--flush { padding: 0; }
.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  background: #fafafa;
}

/* ============== GRID ============== */
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* ============== LOADING ============== */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 16px;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============== EMPTY STATE ============== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
  gap: 12px;
}

.empty-state-icon {
  width: 60px;
  height: 60px;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 4px;
}
.empty-state-icon svg { width: 28px; height: 28px; }

.empty-state-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.empty-state-description {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 320px;
  line-height: 1.6;
}

/* ============== SIDEBAR COLLAPSED ============== */
.sidebar.sidebar--collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar.sidebar--collapsed .nav-section-head,
.sidebar.sidebar--collapsed .nav-label {
  display: none;
}

.sidebar.sidebar--collapsed .nav-section-body {
  max-height: none;
  opacity: 1;
}

.sidebar.sidebar--collapsed .logo-text,
.sidebar.sidebar--collapsed .nav-item span,
.sidebar.sidebar--collapsed .nav-badge,
.sidebar.sidebar--collapsed .sidebar-footer span { display: none; }

/* Header: hide logo, center the toggle button */
.sidebar.sidebar--collapsed .sidebar-header {
  justify-content: center;
  padding: 14px 8px;
}
.sidebar.sidebar--collapsed .sidebar-logo { display: none; }

/* Nav: tighter padding, no dead section gaps */
.sidebar.sidebar--collapsed .sidebar-nav {
  padding: 6px 0 12px;
}
.sidebar.sidebar--collapsed .nav-section {
  padding: 0 8px;
  margin-bottom: 0;
}
.sidebar.sidebar--collapsed .nav-section + .nav-section {
  border-top: 1px solid var(--sidebar-border);
  margin-top: 4px;
  padding-top: 4px;
}

/* Nav items: centered, proper hit area */
.sidebar.sidebar--collapsed .nav-item {
  justify-content: center;
  padding: 9px 8px;
  overflow: visible;
}

/* Restore the active indicator (left accent bar) */
.sidebar.sidebar--collapsed .nav-item.active::before {
  display: block;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 0 3px 3px 0;
}

/* Icons slightly larger and always full opacity */
.sidebar.sidebar--collapsed .nav-icon {
  width: 18px;
  height: 18px;
  opacity: 1;
}

/* Tooltip: slide in from the right on hover */
.sidebar.sidebar--collapsed .nav-item[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: #1e293b;
  color: #f8fafc;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  border: 1px solid #334155;
  z-index: 300;
}
.sidebar.sidebar--collapsed .nav-item[data-tooltip]:hover::after {
  opacity: 1;
}

/* Footer: centered icons, no text overflow */
.sidebar.sidebar--collapsed .sidebar-footer {
  align-items: center;
  padding: 10px 8px;
}
.sidebar.sidebar--collapsed .btn-backup {
  justify-content: center;
  padding: 9px;
  width: 100%;
}

/* Main wrapper shifts when sidebar collapses */
.main-wrapper.sidebar--collapsed { margin-left: var(--sidebar-collapsed-width); }

/* ============== SIDEBAR OVERLAY (mobile) ============== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 0.5);
  z-index: 199;
}
.sidebar-overlay--visible { display: block; }

/* ============== RESPONSIVE ============== */
@media (max-width: 1280px) {
  .page-content { padding: 24px; }
}

@media (max-width: 1024px) {
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .page-content { padding: 20px; }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }
  .sidebar--mobile-open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .mobile-menu-btn { display: flex; }
  .header-date { display: none; }
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .page-content { padding: 16px 16px 32px; }
  .page-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .page-actions { width: 100%; justify-content: flex-start; }
  .page-title { font-size: 20px; }
}

@media (max-width: 480px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .top-header { padding: 0 14px; }
  .page-content { padding: 12px 12px 28px; }
}