/* ==========================================================================
   Meta Glasses Photo Converter - Frontend Stylesheet
   Prefix: mgc-
   ========================================================================== */

:root {
  --mgc-primary: #4f46e5;
  --mgc-primary-hover: #4338ca;
  --mgc-secondary: #ec4899;
  --mgc-accent-gradient: linear-gradient(135deg, var(--mgc-primary) 0%, var(--mgc-secondary) 100%);
  --mgc-bg: #ffffff;
  --mgc-bg-subtle: #f8fafc;
  --mgc-bg-card: #ffffff;
  --mgc-text: #0f172a;
  --mgc-text-muted: #64748b;
  --mgc-border: #e2e8f0;
  --mgc-border-focus: #818cf8;
  --mgc-radius-sm: 8px;
  --mgc-radius-md: 14px;
  --mgc-radius-lg: 20px;
  --mgc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --mgc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --mgc-shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.08), 0 6px 12px -4px rgba(15, 23, 42, 0.04);
  --mgc-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --mgc-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Scoped Root Isolation */
.mgc-root {
  font-family: var(--mgc-font);
  color: var(--mgc-text);
  line-height: 1.6;
  max-width: 1080px;
  margin: 0 auto;
  padding: 30px 16px 80px;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.mgc-root *,
.mgc-root *::before,
.mgc-root *::after {
  box-sizing: border-box;
}

/* Breadcrumbs */
.mgc-breadcrumb {
  margin-bottom: 24px;
}

.mgc-breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
  font-size: 14px;
  color: var(--mgc-text-muted);
}

.mgc-breadcrumb a {
  color: var(--mgc-text-muted);
  text-decoration: none;
  transition: var(--mgc-transition);
}

.mgc-breadcrumb a:hover {
  color: var(--mgc-primary);
  text-decoration: underline;
}

.mgc-breadcrumb .mgc-sep {
  color: #cbd5e1;
}

.mgc-breadcrumb [aria-current="page"] {
  color: var(--mgc-text);
  font-weight: 500;
}

/* Hero Section */
.mgc-hero {
  text-align: center;
  margin-bottom: 36px;
}

.mgc-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: #eef2ff;
  border: 1px solid #e0e7ff;
  border-radius: 9999px;
  color: var(--mgc-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.mgc-hero-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--mgc-text);
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.mgc-hero-subtitle {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--mgc-text-muted);
  max-width: 680px;
  margin: 0 auto 16px;
  line-height: 1.55;
}

.mgc-privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 9999px;
  color: #166534;
  font-size: 13.5px;
  font-weight: 500;
}

/* Main Converter Card */
.mgc-converter-container {
  max-width: 780px;
  margin: 0 auto 50px;
}

.mgc-card {
  background: var(--mgc-bg-card);
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-lg);
  box-shadow: var(--mgc-shadow-lg);
  overflow: hidden;
  position: relative;
  transition: var(--mgc-transition);
}

/* Tabs */
.mgc-tabs {
  display: flex;
  background: #f8fafc;
  border-bottom: 1px solid var(--mgc-border);
  padding: 6px 8px;
  gap: 8px;
}

.mgc-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: none;
  background: transparent;
  color: var(--mgc-text-muted);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--mgc-radius-sm);
  cursor: pointer;
  transition: var(--mgc-transition);
}

.mgc-tab:hover {
  color: var(--mgc-text);
  background: #f1f5f9;
}

.mgc-tab.active {
  background: #ffffff;
  color: var(--mgc-primary);
  box-shadow: var(--mgc-shadow-sm);
  border: 1px solid #e2e8f0;
}

/* Hidden Inputs */
.mgc-hidden-input {
  display: none !important;
}

/* Error Alert */
.mgc-alert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  margin: 16px 20px 0;
  border-radius: var(--mgc-radius-sm);
  font-size: 14px;
}

.mgc-alert-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.mgc-alert-close {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 18px;
  color: inherit;
  cursor: pointer;
}

/* Upload Box */
.mgc-upload-box {
  padding: 48px 24px;
  margin: 20px;
  border: 2px dashed #cbd5e1;
  border-radius: var(--mgc-radius-md);
  background: #fafafa;
  text-align: center;
  cursor: pointer;
  transition: var(--mgc-transition);
}

.mgc-upload-box:hover,
.mgc-upload-box.mgc-dragover {
  border-color: var(--mgc-primary);
  background: #f5f3ff;
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.08);
}

.mgc-icon-ring {
  width: 76px;
  height: 76px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: #eef2ff;
  color: var(--mgc-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--mgc-transition);
}

.mgc-upload-box:hover .mgc-icon-ring,
.mgc-upload-box.mgc-dragover .mgc-icon-ring {
  transform: scale(1.08);
  background: var(--mgc-primary);
  color: #ffffff;
}

.mgc-upload-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--mgc-text);
  margin: 0 0 6px;
}

.mgc-upload-subtitle {
  font-size: 14.5px;
  color: var(--mgc-text-muted);
  margin: 0 0 20px;
}

.mgc-upload-hint {
  font-size: 13px;
  color: #94a3b8;
  margin: 14px 0 0;
}

/* Buttons */
.mgc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  border-radius: var(--mgc-radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: var(--mgc-transition);
  border: 1px solid transparent;
}

.mgc-btn-primary,
.mgc-select-btn {
  padding: 13px 28px;
  font-size: 15px;
  color: #ffffff;
  background: var(--mgc-accent-gradient);
  box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.35);
}

.mgc-btn-primary:hover,
.mgc-select-btn:hover {
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px 0 rgba(79, 70, 229, 0.45);
}

.mgc-btn-convert {
  padding: 14px 32px;
  font-size: 16px;
  color: #ffffff;
  background: var(--mgc-accent-gradient);
  box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.35);
}

.mgc-btn-convert:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.mgc-btn-ghost {
  padding: 10px 18px;
  font-size: 14px;
  background: #f1f5f9;
  color: var(--mgc-text);
  border-color: #e2e8f0;
}

.mgc-btn-ghost:hover {
  background: #e2e8f0;
}

.mgc-btn-danger-ghost {
  padding: 10px 18px;
  font-size: 14px;
  background: #fff;
  color: #dc2626;
  border-color: #fecaca;
}

.mgc-btn-danger-ghost:hover {
  background: #fef2f2;
}

.mgc-btn-download {
  padding: 15px 34px;
  font-size: 16.5px;
  color: #ffffff;
  background: #16a34a;
  border-radius: var(--mgc-radius-sm);
  box-shadow: 0 4px 14px 0 rgba(22, 163, 74, 0.3);
}

.mgc-btn-download:hover {
  background: #15803d;
  color: #ffffff;
  transform: translateY(-1px);
}

.mgc-btn-secondary {
  padding: 14px 24px;
  font-size: 15px;
  background: #f1f5f9;
  color: var(--mgc-text);
  border: 1px solid #cbd5e1;
}

.mgc-btn-secondary:hover {
  background: #e2e8f0;
}

/* Preview Zone */
.mgc-preview-section {
  padding: 24px;
}

.mgc-preview-wrapper {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mgc-preview-frame {
  position: relative;
  background: #0f172a;
  border-radius: var(--mgc-radius-md);
  overflow: hidden;
  max-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mgc-preview-frame img {
  max-width: 100%;
  max-height: 420px;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.mgc-badge-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
}

/* Meta Data Grid */
.mgc-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  background: #f8fafc;
  padding: 14px 16px;
  border: 1px solid #e2e8f0;
  border-radius: var(--mgc-radius-sm);
}

.mgc-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mgc-meta-label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--mgc-text-muted);
  font-weight: 600;
}

.mgc-meta-val {
  font-size: 14px;
  font-weight: 700;
  color: var(--mgc-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mgc-actions-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--mgc-border);
}

.mgc-secondary-actions {
  display: flex;
  gap: 10px;
}

/* Processing State */
.mgc-processing-box {
  padding: 60px 24px;
  text-align: center;
}

.mgc-spinner-ring {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  border: 4px solid #e2e8f0;
  border-top-color: var(--mgc-primary);
  border-radius: 50%;
  animation: mgc-spin 0.8s linear infinite;
}

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

.mgc-processing-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--mgc-text);
  margin: 0 0 8px;
}

.mgc-processing-desc {
  font-size: 14.5px;
  color: var(--mgc-text-muted);
  max-width: 480px;
  margin: 0 auto 24px;
}

.mgc-progress-bar {
  width: 100%;
  max-width: 360px;
  height: 8px;
  background: #e2e8f0;
  border-radius: 9999px;
  margin: 0 auto;
  overflow: hidden;
}

.mgc-progress-fill {
  width: 30%;
  height: 100%;
  background: var(--mgc-accent-gradient);
  border-radius: 9999px;
  animation: mgc-pulse-bar 1.5s ease-in-out infinite;
}

@keyframes mgc-pulse-bar {
  0% { width: 15%; margin-left: 0; }
  50% { width: 70%; margin-left: 15%; }
  100% { width: 15%; margin-left: 85%; }
}

/* Result Section */
.mgc-result-section {
  padding: 24px;
}

.mgc-success-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #15803d;
  padding: 12px 20px;
  border-radius: var(--mgc-radius-sm);
  margin-bottom: 24px;
  font-size: 16px;
  font-weight: 700;
}

/* Comparison Grid */
.mgc-comparison-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.mgc-compare-card {
  flex: 1;
  background: #f8fafc;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  padding: 16px;
  text-align: center;
}

.mgc-compare-target {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.mgc-compare-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.mgc-tag-orig {
  background: #e2e8f0;
  color: #475569;
}

.mgc-tag-target {
  background: #dbeafe;
  color: #1d4ed8;
}

.mgc-compare-metrics strong {
  font-size: 18px;
  color: var(--mgc-text);
  display: block;
}

.mgc-metric-sub {
  font-size: 13px;
  color: var(--mgc-text-muted);
  margin-top: 4px;
}

.mgc-compare-arrow {
  font-size: 20px;
  color: #94a3b8;
}

.mgc-result-preview-frame {
  position: relative;
  background: #0f172a;
  border-radius: var(--mgc-radius-md);
  overflow: hidden;
  max-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.mgc-result-preview-frame img {
  max-width: 100%;
  max-height: 480px;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.mgc-result-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  color: #ffffff;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.mgc-result-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* Common Section Layout */
.mgc-section {
  margin-bottom: 60px;
}

.mgc-section-header {
  text-align: center;
  margin-bottom: 36px;
}

.mgc-section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--mgc-text);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.mgc-section-subtitle {
  font-size: 16px;
  color: var(--mgc-text-muted);
  max-width: 620px;
  margin: 0 auto;
}

/* Step Cards Grid */
.mgc-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.mgc-step-card {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  padding: 28px 24px;
  position: relative;
  box-shadow: var(--mgc-shadow-sm);
  transition: var(--mgc-transition);
}

.mgc-step-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--mgc-shadow-md);
  border-color: #cbd5e1;
}

.mgc-step-number {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #eef2ff;
  color: var(--mgc-primary);
  font-size: 14px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mgc-step-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.mgc-step-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--mgc-text);
  margin: 0 0 8px;
}

.mgc-step-desc {
  font-size: 14.5px;
  color: var(--mgc-text-muted);
  margin: 0;
  line-height: 1.55;
}

/* Features Grid */
.mgc-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.mgc-feature-card {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  padding: 22px 20px;
  transition: var(--mgc-transition);
}

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

.mgc-feature-icon {
  font-size: 26px;
  margin-bottom: 12px;
}

.mgc-feature-title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--mgc-text);
  margin: 0 0 6px;
}

.mgc-feature-desc {
  font-size: 13.5px;
  color: var(--mgc-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* Use Cases Grid */
.mgc-usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.mgc-usecase-card {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  padding: 24px;
  border-top: 4px solid var(--mgc-primary);
  box-shadow: var(--mgc-shadow-sm);
  transition: var(--mgc-transition);
}

.mgc-usecase-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--mgc-shadow-md);
}

.mgc-usecase-avatar {
  font-size: 30px;
  margin-bottom: 12px;
}

.mgc-usecase-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--mgc-text);
  margin: 0 0 8px;
}

.mgc-usecase-desc {
  font-size: 14px;
  color: var(--mgc-text-muted);
  margin: 0;
  line-height: 1.55;
}

/* Technical Specs Table */
.mgc-table-wrapper {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  overflow-x: auto;
  box-shadow: var(--mgc-shadow-sm);
}

.mgc-tech-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14.5px;
}

.mgc-tech-table th,
.mgc-tech-table td {
  padding: 14px 20px;
  border-bottom: 1px solid #f1f5f9;
}

.mgc-tech-table th {
  background: #f8fafc;
  color: var(--mgc-text);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.mgc-tech-table tr:last-child td {
  border-bottom: none;
}

.mgc-tech-table tr:hover td {
  background: #fcfcfc;
}

/* Educational Card */
.mgc-edu-card {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  padding: 36px 32px;
  box-shadow: var(--mgc-shadow-sm);
}

.mgc-edu-heading {
  font-size: 26px;
  font-weight: 800;
  margin: 0 0 16px;
  color: var(--mgc-text);
}

.mgc-edu-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 28px 0 10px;
  color: var(--mgc-text);
}

.mgc-edu-card p {
  font-size: 15px;
  color: #475569;
  line-height: 1.65;
  margin: 0 0 16px;
}

.mgc-disclaimer-box {
  margin-top: 28px;
  padding: 16px 20px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--mgc-radius-sm);
  color: #92400e;
  font-size: 13.5px;
  line-height: 1.55;
}

/* FAQ Accordion */
.mgc-faq-accordion {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mgc-faq-item {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-sm);
  overflow: hidden;
  transition: var(--mgc-transition);
}

.mgc-faq-item:hover {
  border-color: #cbd5e1;
}

.mgc-faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  color: var(--mgc-text);
  text-align: left;
  cursor: pointer;
  transition: var(--mgc-transition);
}

.mgc-faq-question:hover {
  color: var(--mgc-primary);
}

.mgc-faq-chevron {
  font-size: 20px;
  font-weight: 400;
  color: #94a3b8;
  transition: transform 0.2s ease;
}

.mgc-faq-question[aria-expanded="true"] .mgc-faq-chevron {
  transform: rotate(45deg);
  color: var(--mgc-primary);
}

.mgc-faq-answer {
  padding: 0 22px 20px;
  color: #475569;
  font-size: 14.5px;
  line-height: 1.6;
}

.mgc-faq-answer p {
  margin: 0;
}

/* Related Tools Grid */
.mgc-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.mgc-tool-card {
  background: #ffffff;
  border: 1px solid var(--mgc-border);
  border-radius: var(--mgc-radius-md);
  padding: 20px;
  transition: var(--mgc-transition);
  cursor: pointer;
}

.mgc-tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--mgc-primary);
  box-shadow: var(--mgc-shadow-md);
}

.mgc-tool-icon {
  font-size: 26px;
  margin-bottom: 10px;
}

.mgc-tool-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--mgc-text);
  margin: 0 0 6px;
}

.mgc-tool-desc {
  font-size: 13.5px;
  color: var(--mgc-text-muted);
  margin: 0;
  line-height: 1.45;
}

/* Footer Area */
.mgc-footer {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--mgc-border);
  margin-top: 40px;
}

.mgc-footer-copy {
  font-size: 13.5px;
  color: #94a3b8;
  margin: 0;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
  .mgc-root {
    padding: 16px 12px 60px;
  }

  .mgc-upload-box {
    padding: 36px 16px;
    margin: 14px;
  }

  .mgc-preview-section,
  .mgc-result-section {
    padding: 16px;
  }

  .mgc-actions-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .mgc-secondary-actions {
    justify-content: space-between;
  }

  .mgc-btn-convert,
  .mgc-btn-download,
  .mgc-btn-secondary {
    width: 100%;
  }

  .mgc-comparison-grid {
    flex-direction: column;
    gap: 12px;
  }

  .mgc-compare-arrow {
    transform: rotate(90deg);
  }

  .mgc-edu-card {
    padding: 24px 18px;
  }
}