/* ============================================
   TaxCoin - Layout: Sidebar, Main, Responsive
   ============================================ */

/* --- App Shell --- */
.app {
  display: flex;
  min-height: 100vh;
  max-width: 100vw;
  overflow-x: hidden;
}

/* --- Sidebar --- */
.sidebar {
  width: 240px;
  background: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: width 0.25s ease, transform 0.3s ease, background-color 0.3s ease;
}

.sidebar-brand {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-brand .brand-main {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  min-width: 0;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.sidebar-brand .brand-main:hover .logo,
.sidebar-brand .brand-main:focus-visible .logo {
  transform: none;
  box-shadow: none;
}

.sidebar-brand .brand-main:focus-visible {
  outline: none;
}

.sidebar-brand .logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  margin-left: -10px;
}

.sidebar-brand .logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.sidebar-brand h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-brand .brand-tax {
  color: var(--color-text);
}

.sidebar-brand .brand-coin {
  color: var(--color-primary);
}

.sidebar-collapse-toggle {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--color-text-secondary);
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.sidebar-collapse-toggle:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.sidebar-collapse-toggle svg {
  width: 18px;
  height: 18px;
}

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.75rem;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav .nav-section {
  margin-bottom: 0.5rem;
}

.sidebar-nav .nav-section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: 0.75rem 0.75rem 0.375rem;
}

.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5625rem 0.75rem;
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: all 0.15s ease;
  cursor: pointer;
  text-decoration: none;
}

.sidebar-nav .nav-item:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.sidebar-nav .nav-item.active {
  background: var(--color-sidebar-active);
  color: var(--color-primary);
  font-weight: 600;
}

.sidebar-nav .nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-nav .nav-item .badge {
  margin-left: auto;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  padding: 0.125rem 0.5rem;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.sidebar-footer .user-info {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.sidebar-footer .user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.sidebar-footer .user-details {
  min-width: 0;
}

.sidebar-footer .user-email {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-footer .footer-actions {
  display: flex;
  gap: 0.375rem;
}

.sidebar-footer .footer-actions button {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all 0.15s ease;
}

.sidebar-footer .footer-actions button:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.sidebar-footer .footer-actions button svg {
  width: 16px;
  height: 16px;
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  margin-left: 240px;
  min-width: 0;
  max-width: 100vw;
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

.main-content.sidebar-collapsed {
  margin-left: 72px;
}

/* --- Collapsed Sidebar --- */
.sidebar.collapsed {
  width: 72px;
}

.sidebar.collapsed .sidebar-brand {
  padding: 1rem 0.75rem;
  justify-content: center;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar.collapsed .sidebar-brand .logo {
  margin-left: 0;
}

.sidebar.collapsed .sidebar-brand h1,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .footer-actions button span,
.sidebar.collapsed .user-info {
  display: none;
}

.sidebar.collapsed .sidebar-nav {
  padding: 0.75rem 0.5rem;
  overflow: visible;
}

.sidebar.collapsed .nav-section {
  margin-bottom: 0.375rem;
}

.sidebar.collapsed .nav-item,
.sidebar.collapsed .footer-actions button {
  position: relative;
  justify-content: center;
  gap: 0;
  padding: 0.625rem;
}

.sidebar.collapsed .footer-actions {
  flex-direction: column;
}

.sidebar.collapsed [data-tooltip]::after,
.sidebar.collapsed [data-tooltip]::before {
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 200;
}

.sidebar.collapsed [data-tooltip]::after {
  content: attr(data-tooltip);
  padding: 0.45rem 0.65rem;
  border-radius: 9px;
  background: var(--color-text);
  color: var(--color-bg);
  box-shadow: var(--shadow-lg);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}

.sidebar.collapsed [data-tooltip]::before {
  content: '';
  width: 8px;
  height: 8px;
  left: calc(100% + 8px);
  background: var(--color-text);
  transform: translateY(-50%) rotate(45deg);
}

.sidebar.collapsed [data-tooltip]:hover::after,
.sidebar.collapsed [data-tooltip]:hover::before,
.sidebar.collapsed [data-tooltip]:focus-visible::after,
.sidebar.collapsed [data-tooltip]:focus-visible::before {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.sidebar.collapsed [data-tooltip]:hover::before,
.sidebar.collapsed [data-tooltip]:focus-visible::before {
  transform: translateY(-50%) rotate(45deg);
}

.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.main-header .header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.main-header .mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-left: -5px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.main-header .mobile-toggle:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
  color: var(--color-primary);
}

.main-header .mobile-toggle svg {
  width: 20px;
  height: 20px;
}

.main-header .page-title-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.main-header .page-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.dashboard-title-loader {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.dashboard-title-loader.hidden {
  display: none;
}

.dashboard-title-loader .spinner {
  width: 18px;
  height: 18px;
  border-width: 2px;
}

.main-header .header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.main-body {
  padding: 1.5rem;
  flex: 1;
}

/* --- Auth View --- */
.auth-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  flex: 1 1 100%;
  padding: 1.5rem;
  background: var(--color-bg);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.auth-card .auth-logo {
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-card .auth-logo .logo {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.auth-card .auth-logo .logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.auth-card .auth-logo h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.auth-card .auth-logo .brand-tax {
  color: var(--color-text);
}

.auth-card .auth-logo .brand-coin {
  color: var(--color-primary);
}

.auth-card .auth-logo p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* --- View Sections --- */
.view-section {
  display: none;
}

.view-section.active {
  display: block;
}

/* --- Page Header --- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-header .page-header-left h2 {
  margin-bottom: 0.25rem;
}

.page-header .page-header-left p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .sidebar {
    width: 240px;
    transform: translateX(-100%);
  }

  .sidebar.collapsed {
    width: 240px;
  }

  .sidebar.collapsed .sidebar-brand {
    padding: 1.25rem 1.5rem;
    justify-content: space-between;
    flex-direction: row;
  }

  .sidebar.collapsed .sidebar-brand h1,
  .sidebar.collapsed .nav-section-label,
  .sidebar.collapsed .nav-item span,
  .sidebar.collapsed .footer-actions button span,
  .sidebar.collapsed .user-info {
    display: flex;
  }

  .sidebar.collapsed .nav-item,
  .sidebar.collapsed .footer-actions button {
    justify-content: flex-start;
    gap: 0.625rem;
  }

  .sidebar.collapsed .sidebar-nav {
    padding: 0.75rem 0.75rem;
    overflow-y: auto;
    overflow-x: hidden;
  }

  .sidebar.collapsed .footer-actions {
    flex-direction: row;
  }

  .sidebar.collapsed [data-tooltip]::after,
  .sidebar.collapsed [data-tooltip]::before {
    display: none;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content,
  .main-content.sidebar-collapsed {
    margin-left: 0;
    width: 100%;
    max-width: 100vw;
  }

  .main-header .mobile-toggle {
    display: flex;
  }

  .main-body {
    padding: 1rem;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .main-body {
    padding: 0.75rem;
  }

  h1 { font-size: 1.375rem; }
  h2 { font-size: 1.125rem; }
}

/* --- Sidebar Overlay (Mobile) --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 90;
}

.sidebar-overlay.active {
  display: block;
}
/* --- App Loading Overlay --- */
.app-loading {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

.app-loading.hidden {
  display: none;
}

.app-loading-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.875rem;
  color: var(--color-text-secondary);
}

.app-loading-logo {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.app-loading-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.app-loading-spinner {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  animation: app-loading-spin 0.8s linear infinite;
}

.app-loading p {
  font-size: 0.8125rem;
  font-weight: 600;
  background: linear-gradient(
    90deg,
    var(--color-text-muted) 0%,
    var(--color-text-muted) 30%,
    var(--color-primary) 50%,
    var(--color-text-muted) 70%,
    var(--color-text-muted) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: loading-shimmer 1.8s ease-in-out infinite;
}

@keyframes loading-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

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

@media (max-width: 768px) and (orientation: portrait) {
  .sidebar-collapse-toggle {
    display: none;
  }
}

/* --- Footer --- */
.app-footer {
  padding: 0 0 1rem;
  margin-top: auto;
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.auth-footer-copy {
  text-align: center;
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  max-width: 420px;
  width: 100%;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-copy { font-weight: 500; }
.footer-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-link:hover { color: var(--color-primary); }
.footer-legal {
  display: flex;
  gap: 1rem;
}
@media (max-width: 480px) {
  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* Legal Modal */
.legal-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10002;
  padding: 1rem;
}
.legal-modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  width: 100%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}
.legal-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.legal-modal-header h3 {
  margin: 0;
  font-size: 1.125rem;
}
.legal-modal-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 6px;
  transition: background 0.15s;
}
.legal-modal-close:hover {
  background: var(--color-bg);
}
.legal-modal-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
}
.legal-modal-nav button {
  flex: 1;
  background: none;
  border: none;
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  border-bottom: 2px solid transparent;
}
.legal-modal-nav button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.legal-modal-nav button:hover {
  color: var(--color-text);
}
.legal-modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}
.legal-modal-body h4 {
  font-size: 0.9375rem;
  margin: 1rem 0 0.375rem;
  color: var(--color-text);
}
.legal-modal-body h4:first-child {
  margin-top: 0;
}
.legal-modal-body p {
  margin: 0.25rem 0 0.75rem;
}
.legal-modal-body ul {
  margin: 0.25rem 0 0.75rem 1.25rem;
}
.legal-modal-body li {
  margin: 0.25rem 0;
}