:root {
  --bg-main: #0b0f17;
  --bg-sidebar: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #10b981;
  
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-glow: rgba(16, 185, 129, 0.25);
  
  --secondary: #6366f1;
  --secondary-hover: #4f46e5;
  
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Cairo', 'Plus Jakarta Sans', sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(16, 185, 129, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(99, 102, 241, 0.08) 0%, transparent 40%);
}

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

/* Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  position: fixed;
  top: 0;
  bottom: 0;
  right: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #10b981, #059669);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-info h2 {
  font-size: 1.15rem;
  font-weight: 700;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  text-align: right;
}

.nav-item:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
  color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
}

.count-pill {
  margin-right: auto;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.system-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-dot.online {
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
}

.status-dot.pulse {
  animation: pulseAnim 1.5s infinite;
}

@keyframes pulseAnim {
  0% { opacity: 0.4; }
  50% { opacity: 1; }
  100% { opacity: 0.4; }
}

/* Main Content */
.main-content {
  margin-right: 280px;
  flex: 1;
  padding: 2rem;
  max-width: 1300px;
}

.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.header-title h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.header-title p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-secondary {
  background: var(--secondary);
  color: #fff;
}
.btn-secondary:hover {
  background: var(--secondary-hover);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
}

.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}
.btn-danger-outline:hover {
  background: rgba(239, 68, 68, 0.1);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.btn-copy {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-main);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  transition: var(--transition);
}
.btn-copy:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Glass Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.section-card {
  margin-top: 1.5rem;
}

.card-header {
  margin-bottom: 1rem;
}

.card-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.text-accent {
  color: var(--primary);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.icon-green { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.icon-purple { background: rgba(99, 102, 241, 0.15); color: #6366f1; }
.icon-blue { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }
.icon-red { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
}

/* Tabs Content */
.tab-content {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
  display: block;
}

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

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

/* Sessions Grid */
.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.session-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.session-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: var(--text-dim);
}

.session-card.status-connected::before {
  background: var(--primary);
}
.session-card.status-connecting::before, .session-card.status-scan_qr::before {
  background: var(--warning);
}

.session-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.session-title h4 {
  font-size: 1.1rem;
  font-weight: 700;
}

.session-phone {
  font-size: 0.85rem;
  color: var(--text-muted);
  direction: ltr;
  display: inline-block;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

.session-actions {
  display: flex;
  gap: 0.5rem;
}

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

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

.custom-table th, .custom-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.custom-table th {
  color: var(--text-muted);
  font-weight: 600;
}

.key-code {
  font-family: monospace;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  direction: ltr;
  display: inline-block;
}

/* Code Block */
.code-block-wrapper {
  background: #06090e;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  margin-top: 0.75rem;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-muted);
}

pre {
  padding: 1rem;
  overflow-x: auto;
  font-family: monospace;
  font-size: 0.85rem;
  color: #a7f3d0;
  direction: ltr;
  text-align: left;
}

/* Forms */
.form-container {
  max-width: 650px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.07);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-box {
  width: 90%;
  max-width: 480px;
  animation: modalPop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

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

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Pairing Area */
.divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 1.25rem 0;
}

.pair-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.pair-tab {
  flex: 1;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
}

.pair-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.qr-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 220px;
  background: #fff;
  border-radius: var(--radius-md);
  margin: 1rem 0;
  padding: 1rem;
}

.qr-container img {
  max-width: 200px;
  height: auto;
}

.pairing-code-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed var(--primary);
  padding: 1rem;
  border-radius: var(--radius-md);
  margin: 1rem 0;
}

#pairing-code-val {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--primary);
  font-family: monospace;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(16, 185, 129, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hidden {
  display: none !important;
}

.result-box {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}
.result-box.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--primary);
  color: #a7f3d0;
}
.result-box.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid var(--danger);
  color: #fca5a5;
}