/* ========================================
   Antigravity Theme - Modern UI for Word Add-in
   Clean, minimalistic with floating aesthetics
   ======================================== */

/* ===== Antigravity CSS Variables ===== */
:root {
  /* Primary Color Palette - Professional Blues */
  --ag-primary: #2563eb;
  --ag-primary-light: #3b82f6;
  --ag-primary-dark: #1d4ed8;
  --ag-primary-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #1d4ed8 100%);
  
  /* Accent Colors */
  --ag-accent: #06b6d4;
  --ag-accent-light: #22d3ee;
  
  /* Success/Action Colors */
  --ag-success: #10b981;
  --ag-success-dark: #059669;
  --ag-success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  
  /* Neutral Colors - Soft Greys */
  --ag-bg-body: #f8fafc;
  --ag-bg-card: rgba(255, 255, 255, 0.85);
  --ag-bg-card-solid: #ffffff;
  --ag-bg-elevated: rgba(255, 255, 255, 0.95);
  --ag-border: rgba(226, 232, 240, 0.8);
  --ag-border-light: rgba(241, 245, 249, 0.9);
  
  /* Text Colors */
  --ag-text-primary: #1e293b;
  --ag-text-secondary: #64748b;
  --ag-text-muted: #94a3b8;
  --ag-text-inverse: #ffffff;
  
  /* Shadows - Soft & Floating */
  --ag-shadow-sm: 0 2px 8px -2px rgba(59, 130, 246, 0.08);
  --ag-shadow-md: 0 8px 24px -8px rgba(59, 130, 246, 0.12), 0 4px 12px -4px rgba(0, 0, 0, 0.04);
  --ag-shadow-lg: 0 12px 32px -8px rgba(59, 130, 246, 0.18), 0 8px 16px -8px rgba(0, 0, 0, 0.06);
  --ag-shadow-xl: 0 20px 48px -12px rgba(59, 130, 246, 0.22), 0 12px 24px -8px rgba(0, 0, 0, 0.08);
  --ag-shadow-glow: 0 0 20px -4px rgba(59, 130, 246, 0.3);
  
  /* Border Radius - Rounded */
  --ag-radius-sm: 8px;
  --ag-radius-md: 12px;
  --ag-radius-lg: 16px;
  --ag-radius-xl: 20px;
  --ag-radius-full: 9999px;
  
  /* Transitions */
  --ag-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --ag-transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --ag-transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Base Body Styling ===== */
body {
  background: var(--ag-bg-body);
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

#content-main {
  background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 50%, #ffffff 100%);
}

/* ===== Tab Navigation - Antigravity Style ===== */
.nav-tabs-modern {
  background: var(--ag-bg-elevated);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ag-border);
  padding: 12px 12px 0;
  border-radius: var(--ag-radius-md) var(--ag-radius-md) 0 0;
  box-shadow: var(--ag-shadow-sm);
  position: relative;
  z-index: 10;
}

.nav-tabs-modern::after {
  display: none;
}

.nav-tabs-modern .nav-item {
  margin-bottom: 0;
  margin-right: 4px;
}

.nav-tabs-modern .nav-link {
  border: none;
  color: var(--ag-text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 10px 16px;
  border-radius: var(--ag-radius-sm) var(--ag-radius-sm) 0 0;
  transition: all var(--ag-transition-base);
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  margin-bottom: -1px;
}

.nav-tabs-modern .nav-link i {
  font-size: 1rem;
  transition: transform var(--ag-transition-base), color var(--ag-transition-base);
}

.nav-tabs-modern .nav-link:hover:not(.active) {
  color: var(--ag-primary);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.06) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.nav-tabs-modern .nav-link:hover:not(.active) i {
  transform: scale(1.1);
  color: var(--ag-primary);
}

.nav-tabs-modern .nav-link.active {
  color: var(--ag-primary);
  background: var(--ag-bg-card-solid);
  font-weight: 600;
  border: 1px solid var(--ag-border);
  border-bottom-color: var(--ag-bg-card-solid);
  box-shadow: var(--ag-shadow-md);
}

.nav-tabs-modern .nav-link.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--ag-primary-gradient);
  border-radius: var(--ag-radius-full) var(--ag-radius-full) 0 0;
}

.nav-tabs-modern .nav-link.active i {
  color: var(--ag-primary);
}

/* ===== Floating Card Container ===== */
.card-enhanced,
.card {
  background: var(--ag-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--ag-border) !important;
  border-radius: var(--ag-radius-md) !important;
  box-shadow: var(--ag-shadow-md);
  transition: all var(--ag-transition-base);
  overflow: hidden;
}

.card-enhanced:hover,
.card:hover {
  box-shadow: var(--ag-shadow-lg);
  transform: translateY(-2px);
}

.card-enhanced .card-body,
.card .card-body {
  padding: 20px;
  background: transparent;
}

.card-enhanced .card-header,
.card .card-header {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.9) 0%, rgba(241, 245, 249, 0.8) 100%);
  border-bottom: 1px solid var(--ag-border) !important;
  padding: 14px 20px;
  font-weight: 600;
  color: var(--ag-text-primary);
}

/* ===== Glassmorphism Chat Header ===== */
.msger-header-enhanced {
  background: var(--ag-primary-gradient);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding: 14px 18px;
  font-weight: 600;
  color: var(--ag-text-inverse);
  position: relative;
  overflow: hidden;
}

.msger-header-enhanced::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.msger-header-enhanced .msger-header-title {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== Messenger Section - Enhanced ===== */
.msger-enhanced {
  border: 1px solid var(--ag-border);
  border-radius: var(--ag-radius-lg);
  box-shadow: var(--ag-shadow-lg);
  overflow: hidden;
  background: var(--ag-bg-card-solid);
}

.msger-chat {
  background: linear-gradient(180deg, #fafbfc 0%, #f8fafc 100%) !important;
  background-image: none !important;
}

/* Message Bubbles */
.msg-bubble {
  border-radius: var(--ag-radius-md);
  box-shadow: var(--ag-shadow-sm);
  background: var(--ag-bg-card-solid);
  border: 1px solid var(--ag-border-light);
}

.left-msg .msg-bubble {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-bottom-left-radius: 4px;
}

.right-msg .msg-bubble {
  background: var(--ag-primary-gradient);
  color: var(--ag-text-inverse);
  border: none;
  border-bottom-right-radius: 4px;
  box-shadow: var(--ag-shadow-md);
}

/* Input Area */
.msger-inputarea-enhanced {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 14px 16px;
  border-top: 1px solid var(--ag-border);
}

.msger-input {
  background: var(--ag-bg-card-solid) !important;
  border: 2px solid var(--ag-border) !important;
  border-radius: var(--ag-radius-sm) !important;
  padding: 12px 14px !important;
  font-size: 0.9375rem !important;
  transition: all var(--ag-transition-fast) !important;
  color: var(--ag-text-primary) !important;
}

.msger-input:focus {
  border-color: var(--ag-primary-light) !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12), var(--ag-shadow-sm) !important;
  outline: none !important;
}

/* ===== Gradient Buttons with Hover Lift ===== */
.msger-send-btn-enhanced,
.msger-send-btn {
  background: var(--ag-primary-gradient) !important;
  color: var(--ag-text-inverse) !important;
  border: none !important;
  border-radius: var(--ag-radius-sm) !important;
  padding: 12px 18px !important;
  font-weight: 600 !important;
  font-size: 0.9375rem !important;
  transition: all var(--ag-transition-base) !important;
  box-shadow: 0 4px 14px -3px rgba(37, 99, 235, 0.4) !important;
  cursor: pointer !important;
}

.msger-send-btn-enhanced:hover,
.msger-send-btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.5), var(--ag-shadow-glow) !important;
}

.msger-send-btn-enhanced:active,
.msger-send-btn:active {
  transform: translateY(0) scale(0.98) !important;
}

/* Primary Button Styling */
.btn-primary,
.btn-modern-primary {
  background: var(--ag-primary-gradient) !important;
  border: none !important;
  border-radius: var(--ag-radius-sm) !important;
  font-weight: 500 !important;
  box-shadow: 0 4px 14px -3px rgba(37, 99, 235, 0.35) !important;
  transition: all var(--ag-transition-base) !important;
}

.btn-primary:hover,
.btn-modern-primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.5) !important;
}

.btn-primary:active,
.btn-modern-primary:active {
  transform: translateY(0) scale(0.98) !important;
}

/* Success Button */
.btn-success,
.btn-modern-success {
  background: var(--ag-success-gradient) !important;
  border: none !important;
  border-radius: var(--ag-radius-sm) !important;
  font-weight: 500 !important;
  box-shadow: 0 4px 14px -3px rgba(16, 185, 129, 0.35) !important;
  transition: all var(--ag-transition-base) !important;
}

.btn-success:hover,
.btn-modern-success:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 20px -4px rgba(16, 185, 129, 0.5) !important;
}

/* Outline Buttons */
.btn-outline-primary {
  background: transparent !important;
  border: 2px solid var(--ag-primary) !important;
  border-radius: var(--ag-radius-sm) !important;
  color: var(--ag-primary) !important;
  font-weight: 500 !important;
  transition: all var(--ag-transition-base) !important;
}

.btn-outline-primary:hover {
  background: var(--ag-primary-gradient) !important;
  border-color: transparent !important;
  color: var(--ag-text-inverse) !important;
  transform: translateY(-2px) !important;
  box-shadow: var(--ag-shadow-md) !important;
}

.btn-outline-success {
  background: transparent !important;
  border: 2px solid var(--ag-success) !important;
  border-radius: var(--ag-radius-sm) !important;
  color: var(--ag-success) !important;
  font-weight: 500 !important;
  transition: all var(--ag-transition-base) !important;
}

.btn-outline-success:hover {
  background: var(--ag-success-gradient) !important;
  border-color: transparent !important;
  color: var(--ag-text-inverse) !important;
  transform: translateY(-2px) !important;
  box-shadow: var(--ag-shadow-md) !important;
}

/* ===== Quick Actions Enhancement ===== */
.quickactions-enhanced {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border-top: 1px solid var(--ag-border) !important;
  padding: 8px 12px !important;
  box-shadow: 0 -2px 10px -4px rgba(0, 0, 0, 0.06);
}

#newSessionBtn,
#applyTemplateBtn {
  border-radius: var(--ag-radius-sm) !important;
  transition: all var(--ag-transition-base) !important;
}

#newSessionBtn:hover,
#applyTemplateBtn:hover {
  transform: translateY(-2px) !important;
  box-shadow: var(--ag-shadow-md) !important;
}

/* ===== Upload Drop Zone ===== */
.drop-zone {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.9) 0%, rgba(241, 245, 249, 0.7) 100%);
  border: 2px dashed var(--ag-border);
  border-radius: var(--ag-radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--ag-transition-base);
  cursor: pointer;
}

.drop-zone:hover {
  border-color: var(--ag-primary-light);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.04) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.drop-zone.drag-over {
  border-color: var(--ag-primary);
  background: rgba(59, 130, 246, 0.08);
  transform: scale(1.01);
  box-shadow: var(--ag-shadow-glow);
}

.drop-zone-icon {
  font-size: 2.5rem;
  color: var(--ag-primary-light);
  margin-bottom: 12px;
  transition: transform var(--ag-transition-base);
}

.drop-zone:hover .drop-zone-icon {
  transform: scale(1.1) translateY(-4px);
}

.drop-zone-text {
  color: var(--ag-text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
}

.drop-zone-filename {
  color: var(--ag-text-muted);
  font-size: 0.875rem;
}

/* ===== List Group Items ===== */
.list-group-item {
  background: var(--ag-bg-card-solid);
  border: 1px solid var(--ag-border);
  border-radius: var(--ag-radius-sm) !important;
  margin-bottom: 6px;
  padding: 12px 16px;
  transition: all var(--ag-transition-fast);
}

.list-group-item:hover {
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  box-shadow: var(--ag-shadow-sm);
  transform: translateX(2px);
}

/* ===== Alerts - Modern Style ===== */
.alert {
  border: none;
  border-radius: var(--ag-radius-sm);
  padding: 14px 18px;
  font-weight: 500;
}

.alert-info {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(6, 182, 212, 0.08) 100%);
  color: #1e40af;
  border-left: 4px solid var(--ag-primary);
}

.alert-success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.08) 100%);
  color: #065f46;
  border-left: 4px solid var(--ag-success);
}

/* ===== Badges ===== */
.badge-secondary {
  background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  color: var(--ag-text-secondary);
  border-radius: var(--ag-radius-full);
  font-weight: 600;
  padding: 5px 10px;
}

.badge-success {
  background: var(--ag-success-gradient);
  color: var(--ag-text-inverse);
  border-radius: var(--ag-radius-full);
  font-weight: 600;
  padding: 5px 10px;
}

.badge-primary {
  background: var(--ag-primary-gradient);
  color: var(--ag-text-inverse);
  border-radius: var(--ag-radius-full);
  font-weight: 600;
  padding: 5px 10px;
}

/* ===== Modal Enhancements ===== */
.modal-content {
  background: var(--ag-bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--ag-border);
  border-radius: var(--ag-radius-lg);
  box-shadow: var(--ag-shadow-xl);
}

.modal-header {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.95) 0%, rgba(241, 245, 249, 0.9) 100%);
  border-bottom: 1px solid var(--ag-border);
  border-radius: var(--ag-radius-lg) var(--ag-radius-lg) 0 0;
  padding: 18px 24px;
}

.modal-header .modal-title {
  color: var(--ag-text-primary);
  font-weight: 600;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  background: linear-gradient(180deg, rgba(241, 245, 249, 0.5) 0%, rgba(248, 250, 252, 0.8) 100%);
  border-top: 1px solid var(--ag-border);
  border-radius: 0 0 var(--ag-radius-lg) var(--ag-radius-lg);
  padding: 16px 24px;
}

/* ===== Form Controls ===== */
.form-control {
  background: var(--ag-bg-card-solid);
  border: 2px solid var(--ag-border);
  border-radius: var(--ag-radius-sm);
  padding: 10px 14px;
  font-size: 0.9375rem;
  color: var(--ag-text-primary);
  transition: all var(--ag-transition-fast);
}

.form-control:focus {
  border-color: var(--ag-primary-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
  outline: none;
}

/* Custom Checkbox */
.custom-control-input:checked ~ .custom-control-label::before {
  background: var(--ag-primary-gradient);
  border-color: var(--ag-primary);
}

/* ===== Typography Enhancements ===== */
h5.font-weight-bold,
h6.font-weight-bold {
  color: var(--ag-text-primary);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.text-muted {
  color: var(--ag-text-secondary) !important;
}

.text-primary {
  color: var(--ag-primary) !important;
}

/* ===== Uploaded Files List Enhancement ===== */
.uploaded-file-item {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.8) 100%);
  border: 1px solid var(--ag-border);
  border-left: 4px solid var(--ag-primary);
  border-radius: var(--ag-radius-sm);
  box-shadow: var(--ag-shadow-sm);
}

.uploaded-file-item:hover {
  box-shadow: var(--ag-shadow-md);
  transform: translateX(4px);
}

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

::-webkit-scrollbar-track {
  background: rgba(241, 245, 249, 0.5);
  border-radius: var(--ag-radius-full);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #cbd5e1 0%, #94a3b8 100%);
  border-radius: var(--ag-radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #94a3b8 0%, #64748b 100%);
}

/* ===== Floating Suggestions Button ===== */
#openSuggestionsBtn {
  background: var(--ag-primary-gradient) !important;
  border: none !important;
  box-shadow: var(--ag-shadow-lg), var(--ag-shadow-glow) !important;
  transition: all var(--ag-transition-base) !important;
}

#openSuggestionsBtn:hover {
  transform: scale(1.1) !important;
  box-shadow: var(--ag-shadow-xl), 0 0 30px -4px rgba(59, 130, 246, 0.4) !important;
}

/* ===== Sketch Editor Card Enhancement ===== */
#sketchEditorSection .card {
  border: 1px solid var(--ag-border) !important;
  border-radius: var(--ag-radius-md) !important;
}

#fabricCanvas {
  border: 1px solid var(--ag-border) !important;
  border-radius: var(--ag-radius-sm);
}

/* ===== Button Groups ===== */
.btn-group .btn {
  border-radius: 0 !important;
}

.btn-group .btn:first-child {
  border-radius: var(--ag-radius-sm) 0 0 var(--ag-radius-sm) !important;
}

.btn-group .btn:last-child {
  border-radius: 0 var(--ag-radius-sm) var(--ag-radius-sm) 0 !important;
}

/* ===== Review Tab Enhancements ===== */
#pane-review .list-group-item {
  border-radius: var(--ag-radius-sm) !important;
  border: 1px solid var(--ag-border);
  margin-bottom: 8px;
  transition: all var(--ag-transition-fast);
}

#pane-review .list-group-item:hover {
  border-color: var(--ag-primary-light);
  box-shadow: var(--ag-shadow-sm);
}

/* ===== Responsive - Narrow Sidebar (300px-350px) ===== */
@media (max-width: 380px) {
  .nav-tabs-modern {
    padding: 8px 8px 0;
  }
  
  .nav-tabs-modern .nav-link {
    padding: 8px 10px;
    font-size: 0.8rem;
  }
  
  .nav-tabs-modern .nav-link i {
    font-size: 0.9rem;
  }
  
  /* Hide tab text on very narrow widths */
  .nav-tabs-modern .nav-link .mr-2 + span,
  .nav-tabs-modern .nav-link:not(:has(span))::after {
    display: none;
  }
  
  .card-enhanced .card-body,
  .card .card-body {
    padding: 14px;
  }
  
  .drop-zone {
    padding: 20px 16px;
  }
  
  .drop-zone-icon {
    font-size: 2rem;
  }
  
  .msger-inputarea-enhanced {
    padding: 10px 12px;
  }
  
  .msger-input {
    padding: 10px 12px !important;
    font-size: 0.875rem !important;
  }
  
  .msger-send-btn-enhanced,
  .msger-send-btn {
    padding: 10px 14px !important;
  }
  
  .quickactions-enhanced {
    padding: 6px 8px !important;
  }
  
  #newSessionBtn {
    width: 34px !important;
    height: 34px !important;
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: 14px 16px;
  }
  
  h5.font-weight-bold {
    font-size: 1rem;
  }
  
  .alert {
    padding: 12px 14px;
    font-size: 0.875rem;
  }
}

@media (max-width: 320px) {
  .nav-tabs-modern .nav-link {
    padding: 6px 8px;
    font-size: 0.75rem;
  }
  
  .nav-tabs-modern .nav-link i {
    font-size: 0.85rem;
  }
  
  .card-enhanced .card-body,
  .card .card-body {
    padding: 12px;
  }
  
  .btn-modern,
  .btn {
    padding: 8px 12px !important;
    font-size: 0.8125rem !important;
  }
}

/* ===== Animation Utilities ===== */
@keyframes ag-float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

@keyframes ag-pulse-glow {
  0%, 100% {
    box-shadow: var(--ag-shadow-md);
  }
  50% {
    box-shadow: var(--ag-shadow-lg), var(--ag-shadow-glow);
  }
}

.ag-animate-float {
  animation: ag-float 3s ease-in-out infinite;
}

.ag-animate-pulse-glow {
  animation: ag-pulse-glow 2s ease-in-out infinite;
}

/* ===== Subtle Hover States ===== */
.hover-lift {
  transition: transform var(--ag-transition-base), box-shadow var(--ag-transition-base);
}

.hover-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--ag-shadow-lg);
}

/* ===== Focus States for Accessibility ===== */
.btn:focus-visible,
.form-control:focus-visible,
.nav-link:focus-visible {
  outline: 2px solid var(--ag-primary);
  outline-offset: 2px;
}