@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Prompt:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette - Modern Executive Slate & Vibrant Emerald/Indigo */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-glow: rgba(79, 70, 229, 0.25);

  --secondary: #0ea5e9;
  --secondary-hover: #0284c7;

  --success: #10b981;
  --success-light: #ecfdf5;
  --success-text: #065f46;

  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --warning-text: #92400e;

  --danger: #ef4444;
  --danger-light: #fef2f2;
  --danger-text: #991b1b;
  --danger-glow: rgba(239, 68, 68, 0.25);

  /* Backgrounds & Surfaces */
  --bg-app: #0f172a;
  --bg-sidebar: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #26354a;
  --bg-input: #0f172a;
  --bg-overlay: rgba(15, 23, 42, 0.75);

  /* Borders & Dividers */
  --border-subtle: #334155;
  --border-focus: #6366f1;

  /* Typography */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;

  /* Shadows & Glassmorphism */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

[data-theme="light"] {
  --bg-app: #f1f5f9;
  --bg-sidebar: #0f172a;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-input: #f8fafc;
  --border-subtle: #e2e8f0;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  --primary-light: #eef2ff;
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: 'Prompt', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* App Shell Layout */
#app-root {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

/* Sidebar Navigation */
.sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 50;
  transition: all var(--transition-normal);
}

.brand-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-logo-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #6366f1, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-title {
  display: flex;
  flex-direction: column;
}

.brand-title h1 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: #ffffff;
  line-height: 1.2;
}

.brand-title span {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.nav-menu {
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  overflow-y: auto;
}

.nav-section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  padding: 12px 12px 6px;
  font-weight: 600;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: #94a3b8;
  text-decoration: none;
  font-weight: 500;
  font-size: 13.5px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-item i {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #f8fafc;
}

.nav-item.active {
  background: var(--primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.nav-badge {
  margin-left: auto;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.nav-badge.badge-danger {
  background: var(--danger);
  animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(0, 0, 0, 0.15);
}

.system-status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100vh;
  overflow-y: auto;
}

/* Top App Bar */
.topbar {
  height: 68px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-breadcrumb {
  display: flex;
  flex-direction: column;
}

.page-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.2px;
}

.page-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

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

/* Content Container */
.page-content {
  padding: 28px;
  flex: 1;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

/* View Sections */
.view-panel {
  display: none;
  animation: fadeIn 0.25s ease forwards;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Toast Notifications Container */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 320px;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-main);
  animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transition: all 0.2s ease;
}

.toast.toast-success { border-left: 4px solid var(--success); }
.toast.toast-danger { border-left: 4px solid var(--danger); }
.toast.toast-warning { border-left: 4px solid var(--warning); }
.toast.toast-info { border-left: 4px solid var(--primary); }

.toast-icon {
  font-size: 18px;
  margin-top: 1px;
}
.toast-success .toast-icon { color: var(--success); }
.toast-danger .toast-icon { color: var(--danger); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--primary); }

.toast-body {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  font-size: 13.5px;
  margin-bottom: 2px;
}

.toast-msg {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.4;
}

.toast-close {
  cursor: pointer;
  color: var(--text-muted);
  background: none;
  border: none;
  font-size: 14px;
  padding: 2px;
}
.toast-close:hover { color: var(--text-main); }

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

/* Alert Top Banners (e.g. low balance alert) */
.alert-banner {
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.15), rgba(245, 158, 11, 0.1));
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  animation: fadeIn 0.3s ease;
}

.alert-banner-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.alert-banner-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.alert-banner-text {
  font-size: 13px;
  font-weight: 500;
  color: #fca5a5;
}

.alert-banner-text strong {
  color: #ffffff;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .sidebar {
    width: 72px;
  }
  .brand-title, .nav-item span, .nav-section-title, .nav-badge, .sidebar-footer {
    display: none;
  }
  .brand-header {
    justify-content: center;
    padding: 16px 0;
  }
  .nav-item {
    justify-content: center;
    padding: 12px 0;
  }
}