:root {
  --bg-color: #0a0e1a;
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.1);
  --primary: #00d4ff;
  --secondary: #7c3aed;
  --warning: #f59e0b;
  --danger: #ef4444;
  --success: #10b981;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --sidebar-width: 250px;
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
}

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Utilities */
.glass {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
}

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-secondary); }

.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-success { background-color: var(--success); }
.bg-warning { background-color: var(--warning); }
.bg-danger { background-color: var(--danger); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  text-align: center;
  transition: var(--transition);
  color: #fff;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Login Page Specifics */
.login-body {
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #0a0e1a, #1a0b2e);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 40px;
  text-align: center;
  animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-card h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.login-card p {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

.login-card .btn {
  width: 100%;
  padding: 14px;
  font-size: 1.1rem;
}

#login-error {
  color: var(--danger);
  margin-top: 15px;
  font-size: 0.9rem;
  min-height: 20px;
}

/* Layout */
.app-container {
  display: flex;
  flex: 1;
}

/* Navbar */
.navbar {
  height: 70px;
  padding: 0 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--card-border);
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 15px;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  padding: 30px 0;
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  animation: slideIn 0.5s ease-out forwards;
}

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

.nav-links {
  list-style: none;
}

.nav-links li a {
  display: flex;
  align-items: center;
  padding: 15px 30px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.nav-links li a:hover, .nav-links li a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--primary);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
}

.page-header {
  margin-bottom: 30px;
}

.page-title {
  font-size: 2rem;
  margin-bottom: 10px;
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.dashboard-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.dashboard-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 255, 255, 0.2);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--text-secondary);
}

.status-dot.active {
  background-color: var(--success);
  box-shadow: 0 0 10px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.card-body {
  flex: 1;
}

.data-stat {
  margin-bottom: 15px;
}

.data-stat-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.progress-bar-container {
  height: 8px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease-out;
}

.progress-green { background: linear-gradient(90deg, #10b981, #34d399); }
.progress-yellow { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.progress-red { background: linear-gradient(90deg, #ef4444, #f87171); }

.card-footer {
  margin-top: 20px;
  padding-top: 15px;
  border-top: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.coming-soon-badge {
  position: absolute;
  top: 20px;
  right: -30px;
  background: var(--secondary);
  color: white;
  padding: 5px 30px;
  transform: rotate(45deg);
  font-size: 0.8rem;
  font-weight: bold;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.empty-placeholder {
  height: 120px;
  border: 2px dashed var(--card-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  margin-bottom: 15px;
}

/* Alert Banner */
.alert-banner {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--danger);
  border-left: 4px solid var(--danger);
  padding: 15px 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 15px;
  animation: fadeIn 0.5s ease;
}

.alert-banner.amber {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--warning);
}

/* Settings Page */
.settings-section {
  margin-bottom: 30px;
  padding: 24px;
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

/* Logs Page */
.logs-container {
  height: calc(100vh - 250px);
  overflow-y: auto;
  padding-right: 10px;
}

.log-entry {
  padding: 15px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.log-entry:last-child {
  border-bottom: none;
}

.log-time {
  font-size: 0.85rem;
  color: var(--text-secondary);
  min-width: 150px;
}

.log-badge {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-slt { background: rgba(0, 212, 255, 0.2); color: var(--primary); }
.badge-email { background: rgba(124, 58, 237, 0.2); color: var(--secondary); }
.badge-system { background: rgba(148, 163, 184, 0.2); color: var(--text-secondary); }

.log-content {
  flex: 1;
}

.log-icon {
  font-size: 1.2rem;
}

.filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.filter-btn {
  padding: 8px 16px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Toasts */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}

.toast {
  padding: 15px 25px;
  border-radius: 8px;
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  color: white;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  animation: slideInRight 0.3s forwards, fadeOut 0.3s forwards 3s;
}

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

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

@keyframes fadeOut {
  to { opacity: 0; visibility: hidden; }
}

/* Responsive */
@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    height: auto;
    padding: 15px;
    border-right: none;
    border-bottom: 1px solid var(--card-border);
  }
  
  .nav-links {
    display: flex;
    overflow-x: auto;
  }
  
  .nav-links li a {
    padding: 10px 15px;
    white-space: nowrap;
    border-left: none;
    border-bottom: 3px solid transparent;
  }
  
  .nav-links li a:hover, .nav-links li a.active {
    border-left-color: transparent;
    border-bottom-color: var(--primary);
  }
  
  .settings-grid {
    grid-template-columns: 1fr;
  }
}