/* --- Splash Screen --- */
.app-splash-screen {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 999999;
  background: #090A0F;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.app-splash-screen.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: splashFadeIn 0.35s ease-out forwards;
}

@keyframes splashFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.splash-logo {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #25D366 0%, #229ED9 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  margin-bottom: 16px;
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.25);
}

.splash-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
}

.splash-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: #25D366;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

.splash-text {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* --- Design Tokens (Light) --- */
/* --- Design Tokens (Exclusivamente Dark SaaS Premium) --- */
:root,
[data-theme="dark"] {
  /* Core Palette */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Colors - Neutral */
  --white: #ffffff;
  --bg: #0B0D10;
  --bg-card: #14171D;
  --bg-hover: #1A1E26;
  --bg-input: #1A1E26;
  --bg-sidebar: #111318;
  --bg-overlay: rgba(0, 0, 0, 0.75);

  /* Colors - Text */
  --text: #F5F7FA;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --text-dim: #4B5563;
  --text-inverse: #0B0D10;

  /* Colors - Brand & Accents */
  --primary: #3B82F6;
  --primary-light: rgba(59, 130, 246, 0.12);
  --primary-hover: #2563EB;
  --primary-subtle: rgba(59, 130, 246, 0.12);

  /* Colors - Semantic */
  --success: #22C55E;
  --success-light: rgba(34, 197, 94, 0.12);
  --warning: #F59E0B;
  --warning-light: rgba(245, 158, 11, 0.12);
  --danger: #EF4444;
  --danger-light: rgba(239, 68, 68, 0.12);
  --info: #3B82F6;
  --info-light: rgba(59, 130, 246, 0.12);
  --purple: #7C3AED;
  --purple-light: rgba(124, 58, 237, 0.12);

  /* WhatsApp */
  --wa-green: #22C55E;
  --wa-green-light: rgba(34, 197, 94, 0.12);

  /* Borders */
  --border: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.04);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.7);

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Sidebar */
  --sidebar-w: 240px;
  --header-h: 64px;

  /* Transitions */
  --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -1px -1px;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

img { max-width: 100%; display: block; }

/* --- App Layout --- */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition-slow);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: var(--header-h);
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border);
  box-sizing: border-box;
  flex-shrink: 0;
}

.sidebar-brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.sidebar-brand-icon svg {
  width: 20px;
  height: 20px;
}

.sidebar-brand-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.sidebar-brand-version {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: auto;
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 20px;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-3) var(--space-3);
  overflow-y: auto;
}

.nav-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-4) var(--space-3) var(--space-2);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: 1px solid transparent;
  background: none;
  width: 100%;
  text-align: left;
  position: relative;
}

.nav-link:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.nav-link.active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--primary);
  font-weight: 600;
  border-color: rgba(59, 130, 246, 0.25);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}

.nav-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.65;
  transition: opacity var(--transition);
}

.nav-link:hover svg,
.nav-link.active svg {
  opacity: 1;
  color: var(--primary);
}

.nav-link .nav-badge {
  margin-left: auto;
  font-size: 0.7rem;
  background: var(--primary-light);
  color: var(--primary);
  padding: 1px 8px;
  border-radius: 20px;
  font-weight: 600;
}

/* Sidebar - Status */
.sidebar-status {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.sidebar-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.sidebar-avatar-fallback {
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
}

.status-dot.connected {
  background: var(--wa-green);
  box-shadow: 0 0 0 3px var(--wa-green-light);
}

.status-dot.connecting {
  background: var(--warning);
  animation: pulse-dot 1.5s ease-in-out infinite;
}

.status-dot.disconnected {
  background: var(--text-dim);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.status-text {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Header --- */
.header {
  height: var(--header-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  position: sticky;
  top: 0;
  z-index: 50;
  box-sizing: border-box;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.header-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-breadcrumb span {
  color: var(--text-secondary);
}

/* --- Header Status Badge --- */
.header-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
}

.header-status-badge:hover {
  background: var(--bg-hover);
}

.header-status-badge.status-connected {
  border-color: rgba(16, 185, 129, 0.25);
  background: rgba(16, 185, 129, 0.08);
  color: var(--success);
}

.header-status-badge.status-disconnected {
  border-color: rgba(239, 68, 68, 0.2);
  background: rgba(239, 68, 68, 0.06);
  color: var(--danger);
}

.header-status-badge.status-connecting {
  border-color: rgba(245, 158, 11, 0.25);
  background: rgba(245, 158, 11, 0.08);
  color: var(--warning);
}

.status-dot-mini {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot-mini.connected { background: var(--success); }
.status-dot-mini.disconnected { background: var(--danger); }
.status-dot-mini.connecting { background: var(--warning); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 8px 18px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--bg);
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text);
}

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

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
  border-color: #dc2626;
}

.btn-success {
  background: var(--wa-green);
  color: white;
  border-color: var(--wa-green);
}

.btn-success:hover:not(:disabled) {
  background: #1da851;
  border-color: #1da851;
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.8rem;
}

.btn-sm svg {
  width: 14px;
  height: 14px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 0.95rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

/* --- Inputs --- */
.input, .form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.875rem;
  transition: all var(--transition);
  outline: none;
}

.input:focus, .form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
}

.input::placeholder, .form-input::placeholder {
  color: var(--text-dim);
}

select.input, select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238e9198' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

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

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.card:hover {
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.card-body {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

.card-footer {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
}

/* --- Grids --- */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}

.badge-primary {
  background: var(--primary-subtle);
  color: var(--primary);
}

.badge-success, .badge-completed {
  background: var(--success-light);
  color: var(--success);
}

.badge-warning, .badge-pending, .badge-paused {
  background: var(--warning-light);
  color: var(--warning);
}

.badge-danger, .badge-cancelled {
  background: var(--danger-light);
  color: var(--danger);
}

.badge-info, .badge-running {
  background: var(--info-light);
  color: var(--info);
}

.badge-neutral {
  background: var(--bg);
  color: var(--text-muted);
}

/* --- Tables --- */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-container .table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border);
}

.table-container .table-header h3 {
  font-size: 0.95rem;
  font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table th {
  padding: var(--space-3) var(--space-6);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: left;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

table td {
  padding: var(--space-4) var(--space-6);
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

table tr:last-child td {
  border-bottom: none;
}

table tr:hover td {
  background: var(--bg-hover);
}

table .cell-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
}

table .cell-actions .btn-icon {
  width: 32px;
  height: 32px;
}

/* --- Modals --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-6);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease;
}

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

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalIn 0.25s ease;
}

/* XL modal uses internal flex scroll — override overflow */
.modal.modal-xl {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-lg {
  max-width: 640px;
}

/* Compact button for ghost in modal footer */
.modal-footer .btn-ghost {
  padding: 7px 14px;
  font-size: 13px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-6) 0;
}

.modal-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.modal-header .btn-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  border: none;
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.modal-header .btn-close:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.modal-body {
  padding: var(--space-5) var(--space-6) var(--space-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: 0 var(--space-6) var(--space-6);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-2);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
}

/* --- Checkbox & Switch --- */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
}

.checkbox-label:hover {
  background: var(--bg-hover);
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  border-radius: 4px;
  cursor: pointer;
}

.switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-track {
  width: 40px;
  height: 22px;
  background: var(--border);
  border-radius: 11px;
  transition: all var(--transition);
  position: relative;
}

.switch-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  transition: all var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.switch input:checked + .switch-track {
  background: var(--primary);
}

.switch input:checked + .switch-track::after {
  left: 20px;
}

/* --- Toast --- */
.toast-container {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 500;
  color: white;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  pointer-events: auto;
  max-width: 400px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--info); }
.toast-warning { background: var(--warning); }

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

/* --- Empty State --- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  background: var(--bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--text-muted);
}

.empty-state-icon svg {
  width: 28px;
  height: 28px;
}

.empty-state h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-2);
}

.empty-state p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 300px;
}

/* --- Spinner --- */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* --- Page Container --- */
.page {
  display: none;
  padding: var(--space-8);
  flex: 1;
}

.page.active {
  display: block;
  animation: pageIn 0.2s ease;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.page-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.page-actions {
  display: flex;
  gap: var(--space-3);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .header {
    padding: 0 var(--space-4);
  }

  .page {
    padding: var(--space-4);
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .modal {
    max-width: 100%;
    margin: var(--space-4);
    border-radius: var(--radius-lg);
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .page-actions {
    width: 100%;
  }

  .page-actions .btn {
    flex: 1;
  }

  .table-container {
    overflow-x: auto;
  }

  table {
    min-width: 600px;
  }
}

@media (max-width: 480px) {
  .header-title {
    font-size: 0.95rem;
  }

  .card {
    padding: var(--space-4);
  }
}

/* --- Added Utility Classes --- */
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mono { font-family: 'Courier New', monospace; }

/* --- 1. KPI Grid --- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.kpi-grid.kpi-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1280px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .kpi-grid.kpi-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  gap: var(--space-4);
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
  cursor: default;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.kpi-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kpi-icon svg {
  width: 22px;
  height: 22px;
}

.kpi-icon-primary {
  background: var(--primary-subtle);
  color: var(--primary);
}

.kpi-icon-info {
  background: var(--info-light);
  color: var(--info);
}

/* Fallback & compatibility styles for stats-grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  gap: var(--space-4);
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}


.kpi-icon-success {
  background: var(--success-light);
  color: var(--success);
}

.kpi-icon-warning {
  background: var(--warning-light);
  color: var(--warning);
}

.kpi-icon-purple {
  background: #f3e8ff;
  color: #7c3aed;
}

.kpi-icon-green {
  background: var(--wa-green-light);
  color: var(--wa-green);
}

[data-theme="dark"] .kpi-icon-purple {
  background: #3b1a6b;
}

.kpi-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.kpi-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}

/* --- 2. Skeleton Loading --- */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg-hover) 50%, var(--border) 75%);
  background-size: 400% 100%;
  animation: skeleton-shimmer 1.5s ease infinite;
  border-radius: var(--radius);
}

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

.skeleton-line {
  height: 14px;
  margin-bottom: 8px;
  width: 100%;
  border-radius: 6px;
}

.skeleton-short {
  width: 60%;
}

.skeleton-card {
  height: 60px;
  border-radius: var(--radius-lg);
}

.activity-skeleton {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
}

/* --- 3. Filter Tabs --- */
.filter-tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 4px;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.filter-tab {
  padding: 7px 16px;
  border-radius: var(--radius);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}

.filter-tab:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.filter-tab.active {
  background: var(--bg-card);
  color: var(--text);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* --- 4. Nav Badge Live --- */
.nav-badge-live {
  background: var(--danger);
  color: white;
  font-size: 0.55rem;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  animation: live-pulse 2s ease-in-out infinite;
  border-radius: var(--radius);
}

@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* --- 5. Sidebar Footer & Theme Toggle --- */
.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--bg-sidebar);
}

.sidebar-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.sidebar-avatar-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-avatar-wrapper .status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--bg-sidebar);
  z-index: 2;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.sidebar-avatar-fallback {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.sidebar-status-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
  flex: 1;
}

.status-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

.status-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 400;
}

.sidebar-footer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.sidebar-theme-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}

.sidebar-theme-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
}

/* --- 6. Sidebar Brand Sub --- */
.sidebar-brand-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  flex: 1;
  min-width: 0;
}

.sidebar-brand-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* --- 7. Spinner XS --- */
.spinner-xs {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* --- 8. Standalone Auth / Onboarding Screen (Interface 1) --- */
.auth-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.auth-screen.hidden {
  display: none !important;
}

.auth-card {
  width: 100%;
  max-width: 480px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.auth-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.auth-logo {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--primary-subtle);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.auth-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

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

.auth-info-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}

.auth-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.auth-section-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.auth-account-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
}

.auth-account-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-subtle);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.auth-account-info {
  flex: 1;
  min-width: 0;
}

.auth-account-name {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text);
}

.auth-account-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.auth-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.btn-block {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
}

/* Inline QR Code Inside Auth Card */
.auth-qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 16px 0 0;
  width: 100%;
}

.auth-qr-container.hidden {
  display: none !important;
}

.auth-qr-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 0;
}

.auth-qr-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.auth-qr-img {
  width: 220px;
  height: 220px;
  border-radius: var(--radius-lg);
  background: #ffffff;
  padding: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: fadeIn 0.3s ease;
}

.auth-qr-message {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* --- 9. Groups & Batches Cards (Minimal SaaS Premium) --- */
.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.group-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.group-card:hover {
  background: var(--bg-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.group-card-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.group-card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.group-card-body {
  flex: 1;
  min-width: 0;
}

.batches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.batch-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.batch-card:hover {
  background: var(--bg-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.badge-subtle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
}