:root {
  --color-primary-navy: #001B48;
  --color-secondary-blue: #02457A;
  --color-vibrant-ocean: #018ABE;
  --color-soft-sky: #97CADB;
  --color-light-sky: #D6E8EE;
  --color-bg-page: #F4F8FA;
  --color-white: #FFFFFF;
  --color-card-bg: #FFFFFF;
  
  --color-text-main: #001B48;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  
  --color-success: #10B981;
  --color-success-bg: #ECFDF5;
  --color-danger: #EF4444;
  --color-danger-bg: #FEF2F2;
  --color-warning: #F59E0B;
  
  --shadow-sm: 0 1px 3px rgba(0, 27, 72, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 27, 72, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 27, 72, 0.12);
  --shadow-glow: 0 0 20px rgba(1, 138, 190, 0.25);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--color-bg-page);
  color: var(--color-text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-light-sky);
}
::-webkit-scrollbar-thumb {
  background: var(--color-soft-sky);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-vibrant-ocean);
}

/* App Layout */
.app-container {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

/* Sidebar (Desktop Hireism style) */
.sidebar {
  width: 260px;
  background-color: var(--color-primary-navy);
  color: var(--color-white);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: var(--transition);
  z-index: 50;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  padding-left: 8px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-vibrant-ocean), #38BDF8);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(1, 138, 190, 0.4);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
  stroke: #ffffff;
}

.brand-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #FFFFFF;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--color-soft-sky);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  color: #CBD5E1;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  transform: translateX(3px);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-vibrant-ocean));
  color: #FFFFFF;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(1, 138, 190, 0.3);
}

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

.nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* User Card in Sidebar */
.sidebar-user {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #02457A, #018ABE);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  border: 2px solid var(--color-soft-sky);
}

.user-info {
  flex-grow: 1;
  overflow: hidden;
}

.user-name {
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--color-soft-sky);
}

.btn-logout {
  background: transparent;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  font-size: 16px;
  transition: var(--transition);
}

.btn-logout:hover {
  color: #EF4444;
}

/* Main Content Area */
.main-wrapper {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-y: auto;
}

/* Top Navbar */
.top-navbar {
  height: 72px;
  background-color: var(--color-white);
  border-bottom: 1px solid rgba(151, 202, 219, 0.35);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
}

.group-selector-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.group-select {
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-soft-sky);
  background: var(--color-white);
  color: var(--color-primary-navy);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  min-width: 220px;
  transition: var(--transition);
}

.group-select:focus {
  border-color: var(--color-vibrant-ocean);
  box-shadow: 0 0 0 3px rgba(1, 138, 190, 0.15);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-vibrant-ocean));
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(1, 138, 190, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #013460, #0178a7);
  box-shadow: 0 6px 18px rgba(1, 138, 190, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-light-sky);
  color: var(--color-secondary-blue);
}

.btn-secondary:hover {
  background: #C4DEE7;
  color: var(--color-primary-navy);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-soft-sky);
  color: var(--color-secondary-blue);
}

.btn-outline:hover {
  border-color: var(--color-vibrant-ocean);
  background: rgba(1, 138, 190, 0.05);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-success {
  background: linear-gradient(135deg, #059669, #10B981);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
  background: #047857;
  transform: translateY(-1px);
}

/* Page Content */
.content-area {
  padding: 28px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Greeting Hero Banner (Hireism / Medcare style) */
.hero-banner {
  background: linear-gradient(135deg, var(--color-primary-navy) 0%, var(--color-secondary-blue) 50%, var(--color-vibrant-ocean) 100%);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 27, 72, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-banner::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-info h1 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.hero-info p {
  font-size: 14.5px;
  color: var(--color-light-sky);
  max-width: 580px;
  line-height: 1.5;
}

.hero-quick-actions {
  display: flex;
  gap: 12px;
  z-index: 2;
}

/* 4 Metric Cards */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.metric-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 22px;
  border: 1px solid rgba(151, 202, 219, 0.4);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-vibrant-ocean);
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.metric-label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.metric-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-icon-box svg {
  width: 22px;
  height: 22px;
}

.icon-blue {
  background: rgba(1, 138, 190, 0.12);
  color: var(--color-vibrant-ocean);
}

.icon-green {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-success);
}

.icon-red {
  background: rgba(239, 68, 68, 0.12);
  color: var(--color-danger);
}

.icon-purple {
  background: rgba(139, 92, 246, 0.12);
  color: #8B5CF6;
}

.cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-light-sky);
  color: var(--color-secondary-blue);
  flex-shrink: 0;
}

.cat-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-secondary-blue);
}

.expense-details {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.expense-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-navy);
}

.expense-meta {
  font-size: 12.5px;
  color: var(--color-text-muted);
}

.expense-right {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.expense-amount {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary-navy);
}

.badge-split {
  font-size: 11px;
  background: var(--color-light-sky);
  color: var(--color-secondary-blue);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

/* Right Panel: Simplified Debt Cards */
.debt-card {
  background: linear-gradient(135deg, #F8FAFC, #FFFFFF);
  border: 1.5px solid var(--color-soft-sky);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: var(--transition);
}

.debt-card:hover {
  border-color: var(--color-vibrant-ocean);
  box-shadow: 0 4px 14px rgba(1, 138, 190, 0.15);
}

.debt-transfer-visual {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.debt-person {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mini-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-secondary-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.person-name {
  font-size: 13px;
  font-weight: 600;
}

.transfer-arrow {
  color: var(--color-vibrant-ocean);
  font-size: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 8px;
}

.debt-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px dashed rgba(151, 202, 219, 0.5);
}

.debt-sum {
  font-size: 16px;
  font-weight: 800;
  color: var(--color-danger);
}

/* Balances Bar / Table */
.member-balance-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: #F8FAFC;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  border: 1px solid #E2E8F0;
}

.member-balance-item:last-child {
  margin-bottom: 0;
}

.badge-status {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
}

.badge-creditor {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge-debtor {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.badge-settled {
  background: #F1F5F9;
  color: var(--color-text-muted);
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 27, 72, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 16px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: 0 20px 40px rgba(0, 27, 72, 0.25);
  transform: translateY(20px) scale(0.98);
  transition: transform 0.25s ease;
  overflow: hidden;
}

.modal-overlay.active .modal-container {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(151, 202, 219, 0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary-navy);
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 22px;
  color: var(--color-text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-primary-navy);
}

.form-control {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-soft-sky);
  outline: none;
  font-size: 14.5px;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--color-vibrant-ocean);
  box-shadow: 0 0 0 3px rgba(1, 138, 190, 0.15);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid rgba(151, 202, 219, 0.3);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: #F8FAFC;
}

/* Demo Quick Switcher Banner */
.demo-switcher-bar {
  background: #FFFBEB;
  border-bottom: 1px solid #FDE68A;
  padding: 8px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #92400E;
}

.demo-users-pills {
  display: flex;
  gap: 8px;
  align-items: center;
}

.demo-pill {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: #FFFFFF;
  border: 1px solid #FCD34D;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  color: #B45309;
  transition: var(--transition);
}

.demo-pill:hover, .demo-pill.active {
  background: #F59E0B;
  color: #FFFFFF;
  border-color: #F59E0B;
}

/* Mobile Bottom Navigation (Nexora style) */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--color-white);
  border-top: 1px solid rgba(151, 202, 219, 0.4);
  box-shadow: 0 -4px 16px rgba(0, 27, 72, 0.08);
  z-index: 100;
  justify-content: space-around;
  align-items: center;
  padding: 0 10px;
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  padding: 6px;
}

.mobile-nav-item.active {
  color: var(--color-vibrant-ocean);
}

.mobile-nav-item .nav-icon {
  font-size: 20px;
}

.mobile-add-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-vibrant-ocean));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 12px rgba(1, 138, 190, 0.4);
  margin-top: -18px;
  border: 3px solid var(--color-white);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dashboard-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .mobile-bottom-nav {
    display: flex;
  }
  .top-navbar {
    padding: 0 16px;
  }
  .content-area {
    padding: 16px 16px 88px;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .hero-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
  }
  .hero-quick-actions {
    width: 100%;
    flex-direction: column;
  }
  .hero-quick-actions .btn {
    width: 100%;
  }
  .demo-switcher-bar {
    flex-direction: column;
    gap: 8px;
    padding: 10px 16px;
    text-align: center;
  }
}