/**
 * MenuSnap AI - Stylesheet
 * Modern, clean, mobile-first design
 */

/* ========================================
   CSS Variables & Theme
   ======================================== */

:root {
  /* Colors */
  --primary-color: #667eea;
  --primary-dark: #5568d3;
  --primary-light: #7c93f5;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --info-color: #3b82f6;

  /* Neutrals */
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Safe area insets (iOS notch) */
  --safe-area-inset-top: env(safe-area-inset-top, 0);
  --safe-area-inset-bottom: env(safe-area-inset-bottom, 0);
  --safe-area-inset-left: env(safe-area-inset-left, 0);
  --safe-area-inset-right: env(safe-area-inset-right, 0);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Reset & Base Styles
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

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

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-color);
  line-height: 1.5;
  overflow-x: hidden;
  padding-top: var(--safe-area-inset-top);
  padding-bottom: var(--safe-area-inset-bottom);
  min-height: 100vh;
}

/* Prevent zoom on iOS */
input, select, textarea {
  font-size: 16px;
}

/* Remove default button styles */
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

/* Prevent long-press menu */
img, button {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* Smooth scrolling */
.scrollable {
  -webkit-overflow-scrolling: touch;
  overflow-y: auto;
}

/* ========================================
   Utility Classes
   ======================================== */

.hidden {
  display: none !important;
}

.mono {
  font-family: var(--font-mono);
}

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

.text-sm {
  font-size: 0.875rem;
}

.text-lg {
  font-size: 1.125rem;
}

.text-xl {
  font-size: 1.25rem;
}

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

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

.text-success {
  color: var(--success-color);
}

.text-error {
  color: var(--error-color);
}

/* ========================================
   Page Structure
   ======================================== */

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-color);
}

.page-header {
  background: var(--surface-color);
  padding: var(--spacing-md) var(--spacing-lg);
  padding-top: calc(var(--spacing-md) + var(--safe-area-inset-top));
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.page-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

.page-header h2 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.header-left,
.header-right,
.header-center {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-center {
  flex: 1;
  justify-content: center;
  flex-direction: column;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  min-height: 44px;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  box-shadow: var(--shadow-md);
}

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

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

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

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

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

.btn-text {
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  min-height: auto;
}

.btn-link {
  color: var(--primary-color);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
  min-height: 52px;
}

.btn-icon {
  width: 44px;
  height: 44px;
  min-height: 44px;
  border-radius: var(--radius-full);
  padding: 0;
  font-size: 1.25rem;
  background: var(--bg-color);
}

.btn-back {
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========================================
   Setup Page
   ======================================== */

.setup-container {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.setup-section {
  margin-bottom: var(--spacing-2xl);
}

.logo {
  font-size: 4rem;
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.setup-container h1 {
  font-size: 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.tagline {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.auto-detect-section {
  text-align: center;
}

.auto-detect-section h2 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.detected-language {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--surface-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-sm);
}

.detected-language .flag {
  font-size: 3rem;
}

.detected-language .language-name {
  font-size: 1.5rem;
  font-weight: 600;
}

.hint {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

.setup-section .btn {
  width: 100%;
  margin-bottom: var(--spacing-sm);
}

/* Language Selector */
.language-selector {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.language-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-lg);
  background: var(--surface-color);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.language-option:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.language-option.selected {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
}

.language-option .flag {
  font-size: 2rem;
}

.language-option .name {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Provider Selector */
.provider-selector {
  display: grid;
  gap: var(--spacing-md);
}

.provider-card {
  position: relative;
  padding: var(--spacing-lg);
  background: var(--surface-color);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.provider-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.provider-card.selected {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
}

.provider-card.recommended {
  border-color: var(--success-color);
}

.provider-card .badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: 0.25rem 0.5rem;
  background: var(--success-color);
  color: white;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
}

.provider-card .icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
}

.provider-card .name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.provider-card .desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* API Key Section */
.apikey-setup .instructions {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.input-group {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.input-apikey {
  flex: 1;
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-family: var(--font-mono);
  transition: border-color var(--transition-base);
}

.input-apikey:focus {
  outline: none;
  border-color: var(--primary-color);
}

.btn-toggle-password {
  width: 44px;
  height: 44px;
  background: var(--bg-color);
  border-radius: var(--radius-lg);
  font-size: 1.25rem;
}

/* ========================================
   Camera Page
   ======================================== */

.camera-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #000;
  overflow: hidden;
}

#cameraPreview {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera-controls {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  padding: 0 var(--spacing-lg);
}

.btn-capture {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background: white;
  border: 4px solid var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-fast);
}

.btn-capture:active {
  transform: scale(0.9);
}

.btn-switch-camera {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  font-size: 1.5rem;
}

/* Photos Section */
.photos-section {
  padding: var(--spacing-lg);
}

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

.photos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}

.photo-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
}

.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: rgba(239, 68, 68, 0.9);
  color: white;
  font-size: 1.25rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-size {
  position: absolute;
  bottom: 4px;
  left: 4px;
  padding: 2px 6px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: 0.625rem;
  border-radius: var(--radius-sm);
}

/* Bottom Actions */
.bottom-actions {
  padding: var(--spacing-lg);
  padding-bottom: calc(var(--spacing-lg) + var(--safe-area-inset-bottom));
  background: var(--surface-color);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.bottom-actions .btn {
  width: 100%;
}

/* ========================================
   Menu Page
   ======================================== */

.language-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.lang-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  background: var(--bg-color);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
}

.menu-container {
  flex: 1;
  overflow-y: auto;
  padding-bottom: 80px;
}

.menu-list {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.menu-item {
  background: var(--surface-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  transition: all var(--transition-base);
}

.menu-item.selected {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.menu-item.unavailable {
  opacity: 0.5;
}

.item-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.item-name {
  flex: 1;
}

.name-translated {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.name-original {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.item-price {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary-color);
  white-space: nowrap;
}

.item-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
}

.item-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.quantity-control {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 0.25rem;
}

.btn-quantity {
  width: 36px;
  height: 36px;
  min-height: 36px;
  border-radius: var(--radius-md);
  background: white;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.quantity {
  min-width: 32px;
  text-align: center;
  font-weight: 600;
  font-size: 1.125rem;
}

.item-notes {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
}

.item-notes:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* Selection Summary */
.selection-summary {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface-color);
  padding: var(--spacing-md) var(--spacing-lg);
  padding-bottom: calc(var(--spacing-md) + var(--safe-area-inset-bottom));
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 50;
}

.summary-info {
  flex: 1;
  font-size: 1.125rem;
}

.selection-summary .btn {
  flex: 2;
}

/* ========================================
   Order Page
   ======================================== */

.order-container {
  flex: 1;
  padding: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.order-instruction {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.input-text {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 1rem;
}

.input-text:focus {
  outline: none;
  border-color: var(--primary-color);
}

.order-content {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  background: var(--surface-color);
  border-radius: var(--radius-lg);
  border: 2px solid var(--primary-color);
}

.order-text {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.8;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.order-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

/* ========================================
   Loading Overlay
   ======================================== */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9000;
}

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

.loading-spinner {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

.loading-message {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.loading-progress {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

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

.modal-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
}

.modal {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal-content {
  background: var(--surface-color);
  border-radius: var(--radius-xl);
  max-width: 400px;
  width: 100%;
  max-height: 80vh;
  overflow: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-sm);
}

.modal-footer .btn {
  flex: 1;
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast {
  position: fixed;
  bottom: calc(var(--spacing-xl) + var(--safe-area-inset-bottom));
  left: var(--spacing-lg);
  right: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--text-primary);
  color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: translateY(120%);
  transition: transform var(--transition-base);
  z-index: 10000;
  max-width: 400px;
  margin: 0 auto;
}

.toast.show {
  transform: translateY(0);
}

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

.toast-error {
  background: var(--error-color);
}

.toast-warning {
  background: var(--warning-color);
}

.toast-info {
  background: var(--info-color);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (min-width: 640px) {
  .photos-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (min-width: 768px) {
  .language-selector {
    grid-template-columns: repeat(4, 1fr);
  }

  .menu-list {
    max-width: 800px;
    margin: 0 auto;
  }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  .page-header,
  .bottom-actions,
  .selection-summary,
  .order-actions {
    display: none;
  }

  .order-content {
    border: 2px solid #000;
    page-break-inside: avoid;
  }
}