/* Restyle - AI Room Design Styles */

/* CSS Variables */
:root {
  /* Colors */
  --charcoal: #1A1A1A;
  --warm-white: #FAFAF8;
  --terracotta: #C4775C;
  --terracotta-hover: #B06A50;
  --terracotta-active: #9C5D45;
  --sage: #8B9D83;
  --sage-light: #A8B8A0;
  --gray-100: #F5F5F4;
  --gray-200: #E7E5E4;
  --gray-300: #D6D3D1;
  --gray-400: #A8A29E;
  --gray-500: #78716C;
  --gray-600: #57534E;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Borders */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--warm-white);
  color: var(--charcoal);
  line-height: 1.5;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    max-width: 1200px;
    padding: var(--spacing-xl);
  }
}

/* Header */
.header {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.logo {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--charcoal);
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1rem;
  color: var(--gray-500);
  margin-top: var(--spacing-xs);
}

@media (min-width: 768px) {
  .logo {
    font-size: 3rem;
  }

  .tagline {
    font-size: 1.125rem;
  }
}

/* Sections */
.section {
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 1.75rem;
  }
}

/* Upload Zone */
.upload-zone {
  height: 240px;
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background-color: var(--gray-100);
}

.upload-zone:hover {
  border-color: var(--terracotta);
  background-color: rgba(196, 119, 92, 0.05);
}

.upload-zone.drag-over {
  border-color: var(--terracotta);
  background-color: rgba(196, 119, 92, 0.1);
  transform: scale(1.01);
}

.upload-content {
  text-align: center;
  padding: var(--spacing-lg);
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--gray-400);
  margin: 0 auto var(--spacing-md);
}

.upload-text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--charcoal);
}

.upload-subtext {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: var(--spacing-xs);
}

/* Preview Container */
.preview-container {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.preview-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

@media (min-width: 768px) {
  .preview-image {
    height: 400px;
  }
}

.remove-btn {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 36px;
  height: 36px;
  background-color: rgba(26, 26, 26, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.remove-btn svg {
  width: 18px;
  height: 18px;
  color: white;
}

.remove-btn:hover {
  background-color: var(--charcoal);
  transform: scale(1.1);
}

/* Sample Rooms */
.sample-rooms {
  margin-top: var(--spacing-xl);
}

.sample-label {
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--spacing-md);
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.sample-room {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.sample-room img {
  width: 100%;
  height: 80px;
  object-fit: cover;
}

@media (min-width: 768px) {
  .sample-room img {
    height: 120px;
  }
}

.sample-room:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.sample-room:active {
  transform: scale(0.98);
}

.sample-room.selected {
  outline: 3px solid var(--terracotta);
  outline-offset: 2px;
}

.sample-name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Style Chips */
.style-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.style-chip {
  height: 72px;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: all var(--transition-base);
  min-width: 100px;
}

.style-chip:hover {
  border-color: var(--sage);
  background-color: var(--gray-100);
  transform: translateY(-2px);
}

.style-chip:active {
  transform: scale(0.98);
}

.style-chip.selected {
  border-color: var(--terracotta);
  background-color: rgba(196, 119, 92, 0.1);
  color: var(--terracotta);
}

.style-icon {
  font-size: 1.25rem;
  opacity: 0.7;
}

.style-chip.selected .style-icon {
  opacity: 1;
}

@media (min-width: 768px) {
  .style-chip {
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-xl);
  }
}

/* Generate Button */
.generate-section {
  text-align: center;
}

.generate-btn {
  width: 100%;
  max-width: 400px;
  height: 56px;
  background-color: var(--terracotta);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

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

.generate-btn:active:not(:disabled) {
  transform: scale(0.98);
  background-color: var(--terracotta-active);
}

.generate-btn:disabled {
  background-color: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
}

.generate-btn.loading {
  background-color: var(--sage);
  cursor: wait;
}

.btn-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

/* Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Loading Text Animation */
.loading-text {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Results Section */
.results-grid {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

.result-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.result-label {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: rgba(26, 26, 26, 0.8);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
}

.result-card-generated .result-label {
  background-color: var(--terracotta);
}

.result-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

@media (min-width: 768px) {
  .result-image {
    height: 400px;
  }
}

.try-again-btn {
  display: block;
  margin: var(--spacing-xl) auto 0;
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: transparent;
  border: 2px solid var(--charcoal);
  color: var(--charcoal);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.try-again-btn:hover {
  background-color: var(--charcoal);
  color: white;
}

/* Furniture Section */
.furniture-subtitle {
  text-align: center;
  color: var(--gray-500);
  margin-top: calc(var(--spacing-md) * -1);
  margin-bottom: var(--spacing-xl);
}

.furniture-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .furniture-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .furniture-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.furniture-card {
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.furniture-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.furniture-image {
  width: 100%;
  height: 120px;
  object-fit: cover;
}

@media (min-width: 768px) {
  .furniture-image {
    height: 150px;
  }
}

.furniture-info {
  padding: var(--spacing-md);
}

.furniture-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--charcoal);
  margin-bottom: var(--spacing-xs);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.furniture-price {
  font-size: 1rem;
  font-weight: 600;
  color: var(--terracotta);
  margin-bottom: var(--spacing-sm);
}

.shop-btn {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--charcoal);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.shop-btn:hover {
  background-color: var(--terracotta);
}

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

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  color: var(--gray-400);
  font-size: 0.875rem;
}

/* Shimmer Animation for Loading States */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.shimmer {
  background: linear-gradient(
    90deg,
    var(--gray-200) 25%,
    var(--gray-100) 50%,
    var(--gray-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* Image Skeleton */
.skeleton-image {
  width: 100%;
  height: 250px;
  border-radius: var(--radius-xl);
}

@media (min-width: 768px) {
  .skeleton-image {
    height: 400px;
  }
}

/* Error State */
.error-message {
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  color: #DC2626;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
  margin: var(--spacing-md) 0;
}

/* Success Animation */
@keyframes success-pop {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.success-pop {
  animation: success-pop 0.4s ease-out;
}

/* Fade In Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}