/* ==========================================================================
   RoomiePay - Pro Mobile App Theme & Design System
   ========================================================================== */

:root {
  --bg-dark: #060913;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(16, 185, 129, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-emerald: #10b981;
  --accent-cyan: #06b6d4;
  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --gradient-primary: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --gradient-glow: linear-gradient(135deg, rgba(16, 185, 129, 0.18) 0%, rgba(6, 182, 212, 0.18) 100%);
  --gradient-accent: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --gradient-amber: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 12px 36px 0 rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 24px rgba(16, 185, 129, 0.28);
  --shadow-rose: 0 0 24px rgba(244, 63, 94, 0.28);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(at 10% 10%, rgba(16, 185, 129, 0.09) 0px, transparent 55%),
    radial-gradient(at 90% 90%, rgba(99, 102, 241, 0.09) 0px, transparent 55%),
    radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.04) 0px, transparent 65%);
}

h1, h2, h3, h4, h5, h6, .font-heading {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* App Container */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Top Navbar */
.navbar {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.8rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  box-shadow: var(--shadow-glow);
}

.brand-title {
  font-size: 1.4rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
}

.nav-item button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.nav-item button:hover,
.nav-item button.active {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-item button.active {
  border: 1px solid var(--border-highlight);
  background: var(--gradient-glow);
  color: var(--accent-emerald);
}

/* User Menu & Live Balance Pill */
.user-menu-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0.85rem;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.user-menu-pill:hover {
  transform: translateY(-1px);
  border-color: var(--accent-emerald);
}

.live-balance-indicator {
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-xl);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.live-balance-indicator.surplus {
  background: rgba(16, 185, 129, 0.18);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.live-balance-indicator.due {
  background: rgba(244, 63, 94, 0.18);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.35);
}

.avatar-circle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* PWA Banner */
.pwa-banner {
  background: var(--gradient-primary);
  color: #fff;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
}

.pwa-banner button {
  background: rgba(255, 255, 255, 0.25);
  border: none;
  color: #fff;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

/* Stat Grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.stat-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.stat-icon.emerald { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.stat-icon.cyan { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.stat-icon.indigo { background: rgba(99, 102, 241, 0.15); color: var(--accent-indigo); }
.stat-icon.amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.stat-icon.rose { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }

.stat-info .stat-value {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 0.1rem;
}

.stat-info .stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* User Menu Account Drawer */
.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  z-index: 1200;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

.drawer-content {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 420px;
  background: var(--bg-dark);
  border-left: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

.drawer-overlay.active .drawer-content {
  transform: translateX(0);
}

/* Category Badges */
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-xl);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  opacity: 0.94;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.25);
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.custom-table th {
  background: rgba(0, 0, 0, 0.25);
  padding: 1rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.custom-table td {
  padding: 1.1rem 1rem;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.custom-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-xl);
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-success { background: rgba(16, 185, 129, 0.18); color: var(--accent-emerald); border: 1px solid rgba(16, 185, 129, 0.35); }
.badge-warning { background: rgba(245, 158, 11, 0.18); color: var(--accent-amber); border: 1px solid rgba(245, 158, 11, 0.35); }
.badge-danger { background: rgba(244, 63, 94, 0.18); color: var(--accent-rose); border: 1px solid rgba(244, 63, 94, 0.35); }
.badge-info { background: rgba(6, 182, 212, 0.18); color: var(--accent-cyan); border: 1px solid rgba(6, 182, 212, 0.35); }

/* Settlement Cards */
.settlement-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 0.85rem;
}

.settlement-flow {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.settlement-arrow {
  color: var(--accent-cyan);
  font-size: 1.2rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1100;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

.modal-container {
  width: 100%;
  max-width: 560px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 1.85rem;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.3rem;
  cursor: pointer;
}

/* Floating Action Button (Mobile & Touch) */
.fab-container {
  position: fixed;
  bottom: 5rem;
  right: 1.25rem;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.fab-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  cursor: pointer;
  transition: var(--transition);
}

.fab-btn:hover {
  transform: scale(1.08);
}

/* Bottom Navigation Bar for Mobile */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  z-index: 100;
  padding: 0.6rem 0;
}

.mobile-nav-items {
  display: flex;
  justify-content: space-around;
  align-items: center;
  list-style: none;
}

.mobile-nav-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  cursor: pointer;
}

.mobile-nav-btn i {
  font-size: 1.25rem;
}

.mobile-nav-btn.active {
  color: var(--accent-emerald);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.9rem 1.35rem;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-highlight);
  color: #fff;
  font-size: 0.9rem;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-bottom-nav { display: block; }
  main.container { padding-bottom: 6rem; }
}