/**
 * Upgrade Modal Styles
 *
 * Modal displayed when user hits session limit (402 response)
 * Designed for conversion optimization with aspirational aesthetics
 */

/* ============================================================
   Modal Container
   ============================================================ */

.upgrade-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
}

.upgrade-modal.active {
  display: flex;
}

/* ============================================================
   Modal Backdrop
   ============================================================ */

.upgrade-modal .modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--overlay-bg);
  backdrop-filter: var(--backdrop-blur);
  cursor: pointer;
}

/* ============================================================
   Modal Content
   ============================================================ */

.upgrade-modal .modal-content {
  position: relative;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 420px;
  width: calc(100% - var(--space-8));
  margin: var(--space-4);
  animation: modalSlideIn 0.3s var(--ease-out);
  overflow: hidden;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Staggered fade-in animation for child elements */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   Modal Header - Gradient Background
   ============================================================ */

.upgrade-modal .modal-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-6) var(--space-4);
  text-align: center;
  background: linear-gradient(
    180deg,
    var(--color-primary-subtle) 0%,
    var(--color-bg-elevated) 100%
  );
  border-bottom: 1px solid var(--color-border-light);
}

/* ============================================================
   Modal Icon - Primary/Growth Colors
   ============================================================ */

.upgrade-modal .modal-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-primary-subtle));
  border-radius: var(--radius-full);
  color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.15);
  animation: fadeInUp 0.4s ease-out 0.1s both;
}

.upgrade-modal .modal-icon svg {
  width: 32px;
  height: 32px;
}

.upgrade-modal .modal-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin: 0;
  animation: fadeInUp 0.4s ease-out 0.15s both;
}

/* ============================================================
   Modal Body
   ============================================================ */

.upgrade-modal .modal-body {
  padding: 0 var(--space-6) var(--space-4);
  text-align: center;
  animation: fadeInUp 0.4s ease-out 0.2s both;
}

.upgrade-message {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-4);
}

/* ============================================================
   Upgrade Details
   ============================================================ */

.upgrade-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.upgrade-sessions-info {
  background: var(--color-bg-muted);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.upgrade-sessions-info strong {
  color: var(--color-text);
}

/* ============================================================
   Progress Bar
   ============================================================ */

.upgrade-progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-bg-muted);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--space-2);
}

.upgrade-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width 0.6s var(--ease-out);
}

.upgrade-progress-fill.full {
  background: linear-gradient(90deg, var(--color-warning), #F59E0B);
}

/* ============================================================
   Reset Info
   ============================================================ */

.upgrade-reset-info {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.upgrade-reset-info strong {
  color: var(--color-text-secondary);
}

/* ============================================================
   Benefits Section
   ============================================================ */

.upgrade-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
  text-align: left;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.benefit-icon {
  color: var(--color-primary);
  font-weight: var(--font-bold);
  flex-shrink: 0;
}

/* ============================================================
   Plans Preview
   ============================================================ */

.upgrade-plans-preview {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
}

.upgrade-plan-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.upgrade-plan-item .plan-name {
  font-weight: var(--font-medium);
  color: var(--color-text);
}

.upgrade-plan-item .plan-price {
  font-weight: var(--font-semibold);
  color: var(--color-primary);
}

/* ============================================================
   Modal Footer
   ============================================================ */

.upgrade-modal .modal-footer {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6) var(--space-6);
  justify-content: center;
  animation: fadeInUp 0.4s ease-out 0.25s both;
}

.upgrade-modal .modal-footer .btn {
  flex: 1;
  max-width: 160px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.upgrade-modal .btn-secondary {
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.upgrade-modal .btn-secondary:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-border-hover);
}

/* Enhanced Primary Button with Gradient and Lift Effect */
.upgrade-modal .btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-text-on-primary);
  border: 1px solid transparent;
  box-shadow: var(--shadow-primary);
  transform: translateY(0);
}

.upgrade-modal .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 148, 136, 0.35);
}

.upgrade-modal .btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.upgrade-modal .btn:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* ============================================================
   Body scroll lock
   ============================================================ */

body.modal-open {
  overflow: hidden;
}

/* ============================================================
   Mobile Responsive
   ============================================================ */

@media (max-width: 480px) {
  .upgrade-modal .modal-content {
    width: calc(100% - var(--space-6));
    margin: var(--space-3);
  }

  .upgrade-modal .modal-header {
    padding: var(--space-5) var(--space-4) var(--space-3);
  }

  .upgrade-modal .modal-body {
    padding: 0 var(--space-4) var(--space-3);
  }

  .upgrade-modal .modal-footer {
    flex-direction: column-reverse;
    padding: var(--space-3) var(--space-4) var(--space-5);
  }

  .upgrade-modal .modal-footer .btn {
    max-width: none;
    width: 100%;
    padding: var(--space-4) var(--space-4);
    font-size: var(--text-base);
  }

  .upgrade-modal .modal-icon {
    width: 56px;
    height: 56px;
  }

  .upgrade-modal .modal-icon svg {
    width: 28px;
    height: 28px;
  }

  .upgrade-progress-bar {
    height: 10px;
  }

  .benefit-item {
    font-size: var(--text-base);
    padding: var(--space-1) 0;
  }
}