:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --bg-dark: #0f172a;
  --card-bg: rgba(30, 41, 59, 0.7);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.1);
  --success: #10b981;
  --danger: #ef4444;
  --sidebar-width: 280px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
  width: var(--sidebar-width);
  background: #1e293b;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
}

.sidebar-header {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
  font-size: 1.5rem;
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  padding: 1rem 0.75rem;
  flex-grow: 1;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: transparent;
  border: none;
  border-radius: 0.5rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.nav-item.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  font-weight: 600;
}

.sidebar-footer {
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border);
}

/* Mobile Sidebar & Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-main);
  transition: 0.3s;
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  .sidebar {
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    z-index: 999;
  }
  .sidebar-overlay.active {
    display: block;
  }
}

/* Main Layout */
.main-header {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 900;
}

.main-header h1 {
  font-size: 1.25rem;
  font-weight: 500;
}

.status-badge {
  padding: 0.25rem 0.75rem;
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.content {
  flex-grow: 1;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Card Styles */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 1.5rem;
}

.item-card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.item-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.5);
}

.card-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.target-tag {
  background: var(--primary);
  padding: 0.25rem 0.6rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.timestamp {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.card-body {
  padding: 1.25rem;
  flex-grow: 1;
}

.content-preview {
  background: rgba(0, 0, 0, 0.3);
  padding: 1rem;
  border-radius: 0.5rem;
  white-space: pre-wrap;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #e2e8f0;
}

.metadata-box {
  margin-top: 1rem;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 0.375rem;
}

.metadata-box small {
  display: block;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.card-footer {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  gap: 1rem;
}

.card-footer button {
  flex: 1;
  padding: 0.75rem;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.2s;
}

.btn-approve {
  background: var(--success);
  color: white;
}

.btn-reject {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2) !important;
}

button:hover {
  filter: brightness(1.1);
}

/* Settings View */
.settings-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: 1rem;
}

.code-block {
  background: #000;
  padding: 1.5rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
  position: relative;
}

.code-block pre {
  color: #a5b4fc;
  font-family: monospace;
}

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  font-size: 0.8rem;
  cursor: pointer;
}

.info-box {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(99, 102, 241, 0.05);
  border-left: 4px solid var(--primary);
  border-radius: 0.25rem;
}

/* Utils */
.loading {
  text-align: center;
  padding: 4rem;
  color: var(--text-muted);
}

.empty-state {
  text-align: center;
  padding: 6rem 2rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  opacity: 0.5;
}