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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #60a5fa;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
  min-height: 100vh;
  color: var(--gray-800);
  line-height: 1.5;
}

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

/* Header */
.header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  color: var(--primary);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: 0.05em;
}

.logo-tagline {
  font-size: 0.7rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-badge {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Hero */
.hero {
  text-align: center;
  padding: 2.5rem 1.5rem 2rem;
  max-width: 700px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.hero p {
  font-size: 1rem;
  color: var(--gray-600);
}

/* Main Content */
.main-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  flex: 1;
}

/* Mode Selector */
.mode-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.mode-btn {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}

.mode-btn:hover {
  border-color: var(--primary-light);
  background: var(--gray-50);
}

.mode-btn.active {
  border-color: var(--primary);
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.mode-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: var(--radius);
  color: var(--gray-600);
  transition: all 0.2s ease;
}

.mode-btn.active .mode-icon {
  background: var(--primary);
  color: var(--white);
}

.mode-title {
  font-weight: 600;
  color: var(--gray-800);
  font-size: 0.95rem;
}

.mode-desc {
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* Content Sections */
.content-section {
  display: none;
}

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

.section-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  background: var(--gray-50);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background: #eff6ff;
}

.dropzone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone-icon {
  color: var(--gray-400);
  margin-bottom: 1rem;
}

.dropzone.dragover .dropzone-icon {
  color: var(--primary);
}

.dropzone-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.25rem;
}

.dropzone-subtitle {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.dropzone-hint {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-top: 0.5rem;
}

/* Uploaded Files */
.uploaded-files {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.uploaded-file {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gray-100);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.uploaded-file .file-icon {
  color: var(--primary);
}

.uploaded-file .remove-file {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.uploaded-file .remove-file:hover {
  color: var(--error);
}

/* Forms */
.form-field {
  margin-top: 1.25rem;
}

.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s ease;
  background: var(--white);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-field textarea {
  min-height: 100px;
  resize: vertical;
}

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

.form-row .form-field {
  margin-top: 0;
}

.form-field-small {
  max-width: 100px;
}

.form-row:has(.form-field-small) {
  grid-template-columns: 1fr auto;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  border: none;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-large {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  margin-top: 1.5rem;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--gray-200);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

/* Kreator */
.kreator-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 2rem;
  align-items: start;
}

.kreator-form h3 {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  color: var(--gray-800);
}

.kreator-preview {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.preview-window {
  background: #87ceeb;
  border: 3px solid var(--gray-600);
  border-radius: 4px;
  padding: 4px;
  position: relative;
}

.preview-window canvas {
  display: block;
  background: linear-gradient(135deg, #b0e0e6 0%, #87ceeb 100%);
}

.preview-info {
  margin-top: 1rem;
  text-align: center;
}

.preview-dims {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-800);
}

.preview-type {
  display: inline-block;
  margin-top: 0.5rem;
  background: var(--primary);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

/* Windows List */
.windows-list-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

.windows-list-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.windows-list-header h4 {
  font-size: 1rem;
  color: var(--gray-800);
}

.count-badge {
  background: var(--gray-200);
  color: var(--gray-600);
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.windows-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.window-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.875rem 1rem;
  background: var(--gray-50);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}

.window-item-type {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
}

.window-item-info {
  flex: 1;
}

.window-item-dims {
  font-weight: 600;
  color: var(--gray-800);
  font-size: 0.9rem;
}

.window-item-desc {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.window-item-qty {
  font-size: 0.9rem;
  color: var(--gray-600);
}

.window-item-remove {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0.25rem;
}

.window-item-remove:hover {
  color: var(--error);
}

.windows-empty {
  text-align: center;
  padding: 2rem;
  color: var(--gray-400);
  font-size: 0.9rem;
}

/* Customer Section */
.customer-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

.customer-section h4 {
  font-size: 1rem;
  color: var(--gray-800);
  margin-bottom: 1rem;
}

.customer-section .form-row {
  grid-template-columns: repeat(3, 1fr);
}

/* Results */
.result-section {
  margin-top: 1.5rem;
}

.result-card {
  border: 2px solid var(--success);
}

.result-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.result-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-icon.success {
  background: #ecfdf5;
  color: var(--success);
}

.result-title h2 {
  font-size: 1.35rem;
  color: var(--gray-900);
}

.result-title p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.quote-details {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.quote-item {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 1rem;
  align-items: center;
  padding: 0.875rem 1rem;
  background: var(--gray-50);
  border-radius: var(--radius);
}

.quote-item-type {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
}

.quote-item-info {
  display: flex;
  flex-direction: column;
}

.quote-item-dims {
  font-weight: 600;
  color: var(--gray-800);
}

.quote-item-desc {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.quote-item-qty {
  font-size: 0.9rem;
  color: var(--gray-600);
  white-space: nowrap;
}

.quote-item-price {
  font-weight: 700;
  color: var(--gray-900);
  font-size: 1rem;
  white-space: nowrap;
}

.quote-total-section {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}

.quote-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.total-label {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--gray-700);
}

.total-price {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--success);
}

.quote-note {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 0.75rem;
}

.email-section {
  border-top: 1px solid var(--gray-200);
  padding-top: 1.5rem;
}

.email-section h4 {
  font-size: 1rem;
  color: var(--gray-800);
  margin-bottom: 1rem;
}

.email-content {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  font-size: 0.9rem;
  color: var(--gray-700);
  white-space: pre-wrap;
  max-height: 300px;
  overflow-y: auto;
  line-height: 1.6;
}

.email-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

/* Footer */
.footer {
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  padding: 1.25rem;
  text-align: center;
  color: var(--gray-500);
  font-size: 0.8rem;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-overlay.active {
  display: flex;
}

.loading-content {
  text-align: center;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

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

.loading-content p {
  color: var(--gray-600);
  font-size: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.5rem;
  }
  
  .kreator-layout {
    grid-template-columns: 1fr;
  }
  
  .kreator-preview {
    order: -1;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .form-row:has(.form-field-small) {
    grid-template-columns: 1fr 1fr;
  }
  
  .customer-section .form-row {
    grid-template-columns: 1fr;
  }
  
  .quote-item {
    grid-template-columns: auto 1fr;
    gap: 0.75rem;
  }
  
  .quote-item-qty,
  .quote-item-price {
    grid-column: 2;
  }
  
  .email-actions {
    flex-direction: column;
  }
  
  .email-actions button {
    width: 100%;
  }
}