/**
 * Saree AI Studio - Premium Indian Fashion Boutique Stylesheet
 * Palette:
 * - Burgundy (#5B132B, #3D091B, #781839)
 * - Cream (#FDFBF7, #F7F3EA, #EFE8DC)
 * - Gold (#C59A3F, #D4AF37, #DFB15B, #F3E5AB)
 * - White (#FFFFFF)
 */

:root {
  --color-burgundy-900: #380718;
  --color-burgundy-800: #4E0E24;
  --color-burgundy-700: #621430;
  --color-burgundy-600: #7A1C3E;
  --color-gold-700: #A27B27;
  --color-gold-500: #C59A3F;
  --color-gold-400: #D8B159;
  --color-gold-300: #E9CE88;
  --color-cream-50: #FDFAF5;
  --color-cream-100: #F6F1E6;
  --color-cream-200: #EDE5D4;
  --color-white: #FFFFFF;
  --color-dark: #1F171A;
  --color-muted: #6E5F64;
  --color-danger: #A31D1D;
  --color-success: #1B6E38;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-display: 'Cinzel', serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --shadow-sm: 0 2px 8px rgba(56, 7, 24, 0.06);
  --shadow-md: 0 6px 20px rgba(56, 7, 24, 0.08);
  --shadow-lg: 0 12px 36px rgba(56, 7, 24, 0.14);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-cream-50);
  color: var(--color-dark);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.luxury-pattern {
  background-color: var(--color-burgundy-800);
  background-image: radial-gradient(var(--color-gold-500) 0.6px, transparent 0.6px), radial-gradient(var(--color-gold-500) 0.6px, var(--color-burgundy-800) 0.6px);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  opacity: 0.98;
}

/* Header */
.app-header {
  background: linear-gradient(135deg, var(--color-burgundy-900) 0%, var(--color-burgundy-800) 60%, var(--color-burgundy-700) 100%);
  color: var(--color-cream-50);
  padding: 2.5rem 1.5rem 2.8rem;
  text-align: center;
  position: relative;
  border-bottom: 2px solid var(--color-gold-400);
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(216, 177, 89, 0.15);
  border: 1px solid var(--color-gold-400);
  color: var(--color-gold-300);
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}

.app-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-cream-50);
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.app-title span {
  color: var(--color-gold-400);
}

.app-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-style: italic;
  color: var(--color-gold-300);
  max-width: 600px;
  margin: 0 auto 0.5rem;
}

.app-meta-badge {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.05em;
}

/* Container */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* Steps / Grid */
.upload-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .upload-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-cream-200);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--color-gold-400);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-burgundy-900);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-burgundy-800);
  color: var(--color-gold-300);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  font-weight: 600;
}

/* Upload dropzones */
.dropzone {
  border: 2px dashed var(--color-gold-400);
  background: var(--color-cream-50);
  border-radius: var(--radius-sm);
  padding: 2rem 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.dropzone:hover, .dropzone.dragover {
  background: var(--color-cream-100);
  border-color: var(--color-burgundy-700);
}

.dropzone-icon {
  width: 52px;
  height: 52px;
  color: var(--color-gold-500);
  margin-bottom: 0.75rem;
}

.dropzone-prompt {
  font-weight: 600;
  color: var(--color-burgundy-800);
  margin-bottom: 0.35rem;
}

.dropzone-hint {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.image-preview-container {
  width: 100%;
  height: 260px;
  position: relative;
  display: none;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #000;
}

.image-preview-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-overlay-btn {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(56, 7, 24, 0.85);
  backdrop-filter: blur(4px);
  color: var(--color-cream-50);
  border: 1px solid var(--color-gold-400);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.2s;
}

.preview-overlay-btn:hover {
  background: var(--color-burgundy-700);
}

/* Provider selector section */
.provider-section {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-cream-200);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-burgundy-900);
  margin-bottom: 0.4rem;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.provider-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .provider-options {
    grid-template-columns: repeat(3, 1fr);
  }
}

.provider-card {
  border: 2px solid var(--color-cream-200);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  background: var(--color-cream-50);
  display: flex;
  flex-direction: column;
}

.provider-card:hover {
  border-color: var(--color-gold-400);
  background: var(--color-white);
}

.provider-card.selected {
  border-color: var(--color-burgundy-700);
  background: var(--color-white);
  box-shadow: 0 0 0 1px var(--color-burgundy-700), var(--shadow-sm);
}

.provider-card.selected::after {
  content: "✓";
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-burgundy-700);
}

.provider-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.provider-icon {
  width: 24px;
  height: 24px;
}

.provider-name {
  font-weight: 700;
  color: var(--color-burgundy-900);
  font-size: 1.05rem;
}

.provider-tag {
  display: inline-block;
  background: var(--color-cream-200);
  color: var(--color-burgundy-800);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
  align-self: flex-start;
}

.provider-desc {
  font-size: 0.8rem;
  color: var(--color-muted);
  line-height: 1.4;
  margin-top: auto;
}

/* Privacy Consent */
.consent-box {
  margin-top: 1.5rem;
  padding: 0.85rem 1.2rem;
  background: var(--color-cream-100);
  border-left: 3px solid var(--color-gold-500);
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--color-muted);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.consent-box input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--color-burgundy-800);
  cursor: pointer;
}

/* Generate CTA */
.cta-container {
  text-align: center;
  margin-bottom: 3rem;
}

.btn-generate {
  background: linear-gradient(135deg, var(--color-burgundy-800) 0%, var(--color-burgundy-700) 100%);
  color: var(--color-cream-50);
  border: 1px solid var(--color-gold-400);
  padding: 1.1rem 3rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(98, 20, 48, 0.3);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-generate:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-burgundy-700) 0%, var(--color-burgundy-600) 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(98, 20, 48, 0.4);
}

.btn-generate:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-gold-300);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Results section */
.results-section {
  display: none;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-cream-200);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
}

.results-header {
  text-align: center;
  margin-bottom: 2rem;
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 840px) {
  .results-grid.two-cols {
    grid-template-columns: 1fr 1fr;
  }
}

.result-card {
  border: 1px solid var(--color-cream-200);
  border-radius: var(--radius-sm);
  background: var(--color-cream-50);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.result-header {
  padding: 1rem 1.25rem;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-cream-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.result-provider-badge {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-burgundy-900);
  font-size: 1.1rem;
}

.result-meta {
  font-size: 0.75rem;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.result-meta-chip {
  background: var(--color-cream-200);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

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

.result-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.result-error-box {
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--color-danger);
  background: #FFF5F5;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.result-footer {
  padding: 1rem 1.25rem;
  background: var(--color-white);
  border-top: 1px solid var(--color-cream-200);
  display: flex;
  gap: 0.75rem;
}

.btn-download {
  flex: 1;
  background: var(--color-burgundy-800);
  color: var(--color-cream-50);
  border: 1px solid var(--color-gold-400);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-download:hover {
  background: var(--color-burgundy-700);
}

.btn-retry {
  background: transparent;
  color: var(--color-burgundy-800);
  border: 1px solid var(--color-cream-200);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
}

.btn-retry:hover {
  background: var(--color-cream-100);
}

/* Interactive Comparison Slider */
.comparison-slider-container {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-cream-200);
}

.comparison-slider {
  position: relative;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 3/4;
  margin: 0 auto;
  overflow: hidden;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  user-select: none;
}

.comparison-before,
.comparison-after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.comparison-before img,
.comparison-after img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.comparison-before {
  width: 50%;
  overflow: hidden;
  z-index: 2;
  border-right: 2px solid var(--color-gold-400);
}

.comparison-divider-handle {
  position: absolute;
  top: 50%;
  right: -16px;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: var(--color-burgundy-900);
  border: 2px solid var(--color-gold-400);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold-300);
  font-size: 12px;
  cursor: ew-resize;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.comparison-badge {
  position: absolute;
  bottom: 12px;
  background: rgba(56, 7, 24, 0.85);
  color: var(--color-gold-300);
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  letter-spacing: 0.05em;
  z-index: 5;
}

.comparison-badge.left { left: 12px; }
.comparison-badge.right { right: 12px; }

/* Alert banners */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-danger {
  background: #FFF5F5;
  border: 1px solid #FED7D7;
  color: var(--color-danger);
}

.alert-info {
  background: #EDF2F7;
  border: 1px solid #CBD5E0;
  color: #2D3748;
}

/* Footer */
.app-footer {
  background: var(--color-burgundy-900);
  color: var(--color-cream-100);
  padding: 2.5rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--color-gold-500);
  margin-top: auto;
  font-size: 0.85rem;
}

.app-footer a {
  color: var(--color-gold-400);
  text-decoration: none;
}

/* Magnifying Glass Loupe & Fabric Inspector */
.magnifier-container {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
  cursor: crosshair;
  background: #000;
}

.magnifier-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.magnifier-lens {
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 4px solid var(--color-gold-400);
  box-shadow: 0 0 25px rgba(212, 175, 55, 0.7), inset 0 0 15px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  background-repeat: no-repeat;
  display: none;
  z-index: 30;
  transform: translate(-50%, -50%);
}

.magnifier-lens::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(212, 175, 55, 0.4);
}

.magnifier-lens::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: rgba(212, 175, 55, 0.4);
}

.magnifier-badge {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(56, 7, 24, 0.9);
  color: var(--color-gold-300);
  font-size: 9px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--color-gold-400);
  white-space: nowrap;
}

.magnifier-toolbar {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
}

.magnifier-chip {
  background: rgba(45, 6, 19, 0.85);
  backdrop-filter: blur(4px);
  color: var(--color-gold-300);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-gold-400);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.magnifier-chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34D399;
}

.magnifier-zoom-selector {
  background: rgba(45, 6, 19, 0.85);
  backdrop-filter: blur(4px);
  border-radius: 999px;
  border: 1px solid var(--color-gold-400);
  padding: 2px 4px;
  display: flex;
  gap: 2px;
}

.magnifier-zoom-btn {
  background: transparent;
  color: var(--color-gold-300);
  border: none;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 999px;
  cursor: pointer;
}

.magnifier-zoom-btn.active {
  background: var(--color-gold-500);
  color: var(--color-burgundy-900);
}

.magnifier-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(45, 6, 19, 0.85);
  backdrop-filter: blur(4px);
  color: var(--color-cream-50);
  font-size: 10px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.4);
  pointer-events: none;
  white-space: nowrap;
}

/* High-Contrast Fabric Texture Filter */
.magnifier-lens.weave-filter-on {
  filter: contrast(210%) brightness(106%) saturate(155%) drop-shadow(0 0 1px rgba(0, 0, 0, 0.8));
  border-color: #FFF8DC;
  box-shadow: 0 0 35px rgba(255, 215, 0, 0.85), inset 0 0 20px rgba(0, 0, 0, 0.7);
}

.magnifier-filter-btn {
  background: rgba(45, 6, 19, 0.85);
  backdrop-filter: blur(4px);
  color: var(--color-gold-300);
  border: 1px solid var(--color-gold-400);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.magnifier-filter-btn:hover {
  border-color: var(--color-gold-300);
}

.magnifier-filter-btn.active {
  background: linear-gradient(135deg, var(--color-gold-400), var(--color-gold-500));
  color: var(--color-burgundy-900);
  border-color: #FFF8DC;
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.6);
}

.magnifier-filter-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
}

.magnifier-filter-btn.active .magnifier-filter-dot {
  background: var(--color-burgundy-900);
}

/* Checkbox toggle container for fabric weave filter */
.magnifier-filter-checkbox-wrap {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(45, 6, 19, 0.85);
  backdrop-filter: blur(4px);
  color: var(--color-gold-300);
  border: 1px solid var(--color-gold-400);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  cursor: pointer;
  user-select: none;
}

.magnifier-filter-checkbox-wrap input[type="checkbox"] {
  accent-color: var(--color-gold-400);
  width: 12px;
  height: 12px;
  cursor: pointer;
}

/* Grayscale + High-Contrast Fabric Texture Filter */
.magnifier-lens.weave-filter-on.grayscale-mode {
  filter: grayscale(100%) contrast(260%) brightness(112%) drop-shadow(0 0 1px rgba(0, 0, 0, 0.9));
  border-color: #E2E8F0;
  box-shadow: 0 0 35px rgba(255, 255, 255, 0.9), inset 0 0 20px rgba(0, 0, 0, 0.8);
}

/* Preset Pill Buttons for Custom Instructions */
.preset-pill-btn {
  background: var(--color-cream-100);
  color: var(--color-burgundy-900);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.preset-pill-btn:hover {
  background: var(--color-gold-300);
  border-color: var(--color-gold-500);
  color: var(--color-burgundy-900);
}