/* Modern Minimal Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-border: #e8e8e8;
  --color-border-subtle: #f0f0f0;
  --color-text: #1a1a1a;
  --color-text-secondary: #717171;
  --color-text-muted: #999999;
  --color-accent: #1a1a1a;
  --color-accent-hover: #333333;
  --color-success: #10b981;
  --color-error: #ef4444;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

/* Cards */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 40px;
  margin-top: 20px;
}

/* Typography */
h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--color-text);
}

h2 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--color-text);
}

h3 {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  font-weight: 400;
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

label {
  display: block;
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

input[type="text"] {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-family: inherit;
  transition: all var(--transition);
  background: var(--color-surface);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--color-text);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}

input[type="text"]::placeholder {
  color: var(--color-text-muted);
}

small {
  display: block;
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* Buttons */
.btn {
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

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

.btn-success:hover {
  background-color: #0ea572;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Messages */
.error {
  background-color: #fef2f2;
  color: var(--color-error);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-top: 16px;
  font-size: 0.875rem;
  border: 1px solid #fecaca;
}

.success {
  background-color: #ecfdf5;
  color: var(--color-success);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-top: 16px;
  font-size: 0.875rem;
  border: 1px solid #a7f3d0;
}

/* Order Screen */
.order-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.order-info {
  background-color: var(--color-bg);
  padding: 20px;
  border-radius: var(--radius-md);
  margin-bottom: 32px;
}

.order-info p {
  margin: 6px 0;
}

.items-list {
  display: grid;
  gap: 16px;
}

.item-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition);
  background: var(--color-surface);
}

.item-card:hover {
  border-color: var(--color-text-muted);
  box-shadow: var(--shadow-sm);
}

.item-info h3 {
  margin-bottom: 6px;
}

.item-info p {
  margin: 0;
  font-size: 0.875rem;
}

.item-status {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 8px;
}

.status-pending {
  background-color: #fef3c7;
  color: #92400e;
}

.status-customized {
  background-color: #dbeafe;
  color: #1e40af;
}

.status-finalized {
  background-color: #d1fae5;
  color: #065f46;
}

/* Customization Screen */
.customize-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.customize-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 24px;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.form-actions button {
  flex: 1;
}

.preview-container {
  position: sticky;
  top: 24px;
}

.preview-placeholder {
  background: var(--color-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.preview-placeholder p {
  text-align: center;
  margin: 0;
  font-size: 0.9375rem;
}

#previewImage img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 16px;
  }
  
  .card {
    padding: 20px;
    margin-top: 0;
    border-radius: var(--radius-md);
  }
  
  h1 {
    font-size: 1.375rem;
    line-height: 1.3;
  }
  
  h2 {
    font-size: 1rem;
    margin-bottom: 12px;
  }
  
  p {
    font-size: 0.875rem;
    margin-bottom: 20px;
  }
  
  .customize-content,
  .two-column {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .preview-container {
    position: static;
    order: -1;
  }
  
  .preview-placeholder {
    min-height: 280px;
  }
  
  .order-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .btn {
    padding: 14px 20px;
    width: 100%;
  }
  
  .form-group {
    margin-bottom: 20px;
  }
  
  input[type="text"] {
    padding: 14px;
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
  
  /* Template gallery mobile */
  .template-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .template-thumb .name {
    padding: 10px 8px;
    font-size: 0.75rem;
  }
  
  /* Code output mobile */
  .code-output {
    padding: 16px;
    margin-top: 20px;
  }
  
  .code-output code {
    font-size: 0.875rem;
    padding: 12px;
  }
  
  .code-output .instructions {
    font-size: 0.75rem;
  }
  
  /* Back link */
  .back-link {
    margin-bottom: 16px;
  }
  
  /* Page tabs for multi-page */
  .page-tabs {
    flex-wrap: wrap;
  }
  
  .page-tab {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }
}

/* Extra small devices */
@media (max-width: 380px) {
  .container {
    padding: 12px;
  }
  
  .card {
    padding: 16px;
  }
  
  h1 {
    font-size: 1.25rem;
  }
  
  .template-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  
  .template-thumb .name {
    padding: 8px 6px;
    font-size: 0.6875rem;
  }
}

/* Touch-friendly adjustments */
@media (hover: none) and (pointer: coarse) {
  .template-thumb:hover {
    transform: none;
  }
  
  .template-thumb:active {
    transform: scale(0.98);
    border-color: var(--color-text);
  }
  
  .btn:hover {
    transform: none;
  }
  
  .btn:active {
    transform: scale(0.98);
  }
}