:root {
  --bg-dark: #090d16;
  --bg-card: rgba(18, 24, 38, 0.7);
  --bg-card-hover: rgba(26, 34, 52, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(79, 140, 255, 0.3);
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.25);
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-hover: #dc2626;

  --text-main: #f3f4f6;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Dynamic Ambient Glow Background */
.app-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  animation: pulseBlob 12s infinite alternate ease-in-out;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: #3b82f6;
  top: -100px;
  left: -100px;
}

.blob-2 {
  width: 450px;
  height: 450px;
  background: #10b981;
  bottom: -150px;
  right: -100px;
  animation-delay: 4s;
}

.blob-3 {
  width: 350px;
  height: 350px;
  background: #8b5cf6;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 8s;
}

@keyframes pulseBlob {
  0% { transform: scale(0.9) translate(0, 0); }
  100% { transform: scale(1.15) translate(30px, -20px); }
}

/* Header */
.app-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.8);
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #10b981);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.brand-icon svg {
  width: 24px;
  height: 24px;
}

.brand h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.brand .subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.header-stats {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  font-size: 0.82rem;
}

.stat-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.pulse-green {
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.stat-label {
  color: var(--text-muted);
}

.stat-value {
  font-weight: 600;
  color: #fff;
}

/* Main Layout */
.main-content {
  position: relative;
  z-index: 10;
  max-width: 1300px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.section-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.section-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.section-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Instances Grid */
.instances-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.25rem;
}

.instance-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.instance-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--border-highlight), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.instance-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.instance-card:hover::before {
  opacity: 1;
}

.instance-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.instance-identity {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.instance-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.instance-title h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
}

.instance-badge-slug {
  display: inline-block;
  font-size: 0.72rem;
  font-family: monospace;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-connected {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-connecting {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-qr_ready {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.status-disconnected {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.instance-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.25);
  padding: 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.03);
  font-size: 0.82rem;
}

.info-item {
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
}

.info-val {
  color: #e2e8f0;
  font-weight: 500;
}

.info-val.highlight {
  color: #60a5fa;
  font-weight: 600;
}

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

/* Dashboard Split */
.dashboard-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .dashboard-split {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-icon {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

.card-header h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
}

/* Diagnostics Grid */
.diagnostics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: var(--radius-md);
}

.diag-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.diag-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.diag-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
}

.diag-footer-note {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.02);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

/* Forms */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

select.form-control option {
  background: #111827;
  color: #fff;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  cursor: pointer;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.78rem;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: rotate(30deg);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-subtle {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-muted);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

/* Feedback Box */
.feedback-box {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feedback-success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.feedback-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.hidden {
  display: none !important;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease-out;
}

.modal-card {
  background: #111726;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  max-width: 460px;
  width: 100%;
  padding: 2rem;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-card-lg {
  max-width: 650px;
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: white;
}

.modal-header {
  text-align: center;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-top: 0.5rem;
}

.modal-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.qr-frame-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.qr-canvas-container {
  width: 260px;
  height: 260px;
  background: white;
  padding: 12px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.qr-canvas-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-waiting-text {
  color: #4b5563;
  font-size: 0.8rem;
  text-align: center;
  margin-top: 0.75rem;
}

.qr-instructions {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

/* Groups & Rules */
.groups-list-wrapper, .clients-table-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-height: 380px;
  overflow-y: auto;
}

.group-item-card, .client-item-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.group-item-card:hover, .client-item-card:hover {
  border-color: var(--border-highlight);
  background: rgba(255, 255, 255, 0.05);
}

.group-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.group-title-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.group-id-code {
  font-family: monospace;
  font-size: 0.75rem;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  word-break: break-all;
}

.copy-btn {
  background: rgba(59, 130, 246, 0.2);
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #93c5fd;
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  cursor: pointer;
  white-space: nowrap;
}

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

.group-members-summary {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.group-members-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.3rem;
}

.member-chip {
  background: rgba(255, 255, 255, 0.06);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.member-chip.admin {
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.chip-remove {
  cursor: pointer;
  font-weight: bold;
  color: #f87171;
}

.chip-remove:hover {
  color: #ef4444;
}

/* Client Box */
.client-add-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.client-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.client-meta h4 {
  font-size: 0.9rem;
  color: #fff;
}

.client-meta p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.category-badge {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  font-size: 0.68rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  margin-right: 0.3rem;
}

.modal-footer-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Spinner */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

/* Chat Simulator Styles */
.chat-simulator-card {
  display: flex;
  flex-direction: column;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(59, 130, 246, 0.25);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
}

.group-avatar-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981, #059669);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.group-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
}

.sim-header-actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.sim-chat-window {
  min-height: 280px;
  max-height: 400px;
  overflow-y: auto;
  background: #0b141a;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sim-chat-notice {
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
}

.sim-msg-row {
  display: flex;
  width: 100%;
}

.sim-msg-me {
  justify-content: flex-end;
}

.sim-msg-bot {
  justify-content: flex-start;
}

.sim-msg-bubble {
  max-width: 80%;
  padding: 0.6rem 0.9rem;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.4;
  position: relative;
  word-wrap: break-word;
  white-space: pre-wrap;
}

.sim-msg-me .sim-msg-bubble {
  background: #005c4b;
  color: #e9edef;
  border-bottom-right-radius: 2px;
}

.sim-msg-bot .sim-msg-bubble {
  background: #202c33;
  color: #e9edef;
  border-bottom-left-radius: 2px;
  border-left: 3px solid #3b82f6;
}

.sim-msg-author {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: #53bdeb;
  margin-bottom: 0.2rem;
}

.sim-msg-time {
  display: block;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.45);
  text-align: right;
  margin-top: 0.3rem;
}

.sim-chat-input-bar {
  display: flex;
  gap: 0.75rem;
}