/* ==========================================================================
   PhotoKB.net - Official Stylesheet
   Pure CSS for Clean, Accessible, Responsive Utility Website
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Reset & Base Variables
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette - Strict Adherence to Requirements */
  --bg-page: #ffffff;
  --bg-card: #ffffff;
  --bg-pale-blue: #f0f7ff;
  --bg-pale-blue-hover: #e6f0fa;
  
  --text-primary: #111827;       /* Deep near-black for high contrast */
  --text-secondary: #4b5563;     /* Muted neutral for supporting text */
  --text-muted: #6b7280;         /* Captions and placeholders */
  
  --primary-blue: #1a73e8;       /* Clean Google/utility blue */
  --primary-blue-hover: #1557b0; /* Darker blue for active/hover */
  --border-blue-thin: #bfdbfe;   /* Thin blue border */
  --border-blue-active: #1a73e8; /* Emphasized blue border */
  --border-dashed-blue: #1a73e8; /* Dashed upload dropzone border */

  /* Typography */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --line-height-base: 1.5;
  --line-height-heading: 1.25;

  /* Spacing */
  --container-max-width: 1200px;
  --section-spacing: 56px;
  --card-padding: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Focus & Accessibility */
  --focus-ring: 2px solid #1a73e8;
  --focus-offset: 3px;
}

/* Box-sizing and Margin Resets */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-page);
  color: var(--text-primary);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: var(--line-height-base);
  background-color: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

/* Accessible Focus States */
:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background-color: var(--primary-blue);
  color: #ffffff;
  padding: 10px 18px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

/* Utility Hidden Helpers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Section Common Styling */
.section {
  padding-top: var(--section-spacing);
  padding-bottom: var(--section-spacing);
  border-bottom: 1px solid #e5e7eb;
}

.section-header {
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: var(--line-height-heading);
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   2. Buttons & Form Elements
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  min-height: 44px; /* Touch target minimum */
}

.btn-primary {
  background-color: var(--primary-blue);
  color: #ffffff;
  border-color: var(--primary-blue);
}

.btn-primary:hover {
  background-color: var(--primary-blue-hover);
  border-color: var(--primary-blue-hover);
}

.btn-outline {
  background-color: #ffffff;
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn-outline:hover {
  background-color: var(--bg-pale-blue);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.875rem;
  min-height: 38px;
}

/* --------------------------------------------------------------------------
   3. Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-blue-thin);
  z-index: 1000;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 12px 20px;
  gap: 16px;
}

/* Logo */
.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 40px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  display: block;
  transition: opacity 0.15s ease;
}

.brand-logo:hover .brand-logo-img {
  opacity: 0.92;
}

.footer-logo-img {
  height: 42px;
  margin-bottom: 8px;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 6px;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--primary-blue);
  background-color: var(--bg-pale-blue);
}

.nav-link.active {
  color: var(--primary-blue);
  font-weight: 600;
}

/* Header Controls */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language Selector */
.lang-selector-wrapper {
  display: inline-flex;
  align-items: center;
  position: relative;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-sm);
  padding: 0 8px;
  background-color: #ffffff;
  height: 38px;
}

.lang-selector-wrapper:focus-within {
  border-color: var(--primary-blue);
  outline: 1px solid var(--primary-blue);
}

.lang-icon {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
  margin-right: 4px;
}

.lang-select {
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
  padding-right: 4px;
  outline: none;
}

.header-browse-btn {
  display: inline-flex;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-sm);
  padding: 8px;
  width: 42px;
  height: 42px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.mobile-menu-toggle:hover {
  background-color: var(--bg-pale-blue);
}

.hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Hamburger active transformation */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   4. Hero Section & Upload Dropzone
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 56px 20px 40px;
  background-color: #ffffff;
  text-align: center;
}

.hero-container {
  max-width: 820px;
  margin: 0 auto;
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: var(--line-height-heading);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 32px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Upload Dropzone Container */
.upload-dropzone {
  background-color: #ffffff;
  border: 2px dashed var(--border-dashed-blue);
  border-radius: var(--radius-lg);
  padding: 44px 24px;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  position: relative;
  max-width: 700px;
  margin: 0 auto 16px;
}

.upload-dropzone:hover,
.upload-dropzone.drag-active {
  background-color: var(--bg-pale-blue);
  border-color: var(--primary-blue-hover);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.dropzone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none; /* Allows click to pass to container / input */
}

.dropzone-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background-color: var(--bg-pale-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border: 1px solid var(--border-blue-thin);
}

.dropzone-icon {
  width: 30px;
  height: 30px;
}

.dropzone-main-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.dropzone-sub-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.dropzone-btn {
  pointer-events: auto;
}

/* File Feedback Area */
.file-feedback {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border-blue-thin);
  pointer-events: auto;
  text-align: left;
}

.file-info-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-pale-blue);
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  gap: 10px;
  max-width: 100%;
}

.badge-icon {
  width: 18px;
  height: 18px;
  color: var(--primary-blue);
  flex-shrink: 0;
}

.file-details {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.9375rem;
}

.file-name {
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
}

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

.btn-clear-file {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 2px;
}

.btn-clear-file:hover {
  color: #b91c1c;
  background-color: #fee2e2;
}

.file-recommendation {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 10px;
  line-height: 1.4;
}

.dropzone-notice {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   5. Tool Card Grid Layout
   Desktop: 3 per row (2 rows of 3 for 6 cards)
   Tablet: 2 per row
   Mobile: 1 per row
   -------------------------------------------------------------------------- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* Individual Tool Card */
.tool-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  position: relative;
}

/* Card hover and focus-within states - pale blue subtle feedback */
.tool-card:hover {
  border-color: var(--primary-blue);
  background-color: var(--bg-pale-blue);
}

.tool-card:focus-within {
  border-color: var(--primary-blue);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.card-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-blue-thin);
  background-color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary-blue);
}

.tool-card:hover .card-icon-wrap {
  border-color: var(--primary-blue);
}

.card-icon-svg {
  width: 24px;
  height: 24px;
}

.card-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-pale-blue);
  color: var(--primary-blue);
  border: 1px solid var(--border-blue-thin);
}

.card-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.35;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* Action Link */
.card-action {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-blue-thin);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-blue);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: gap 0.15s ease, color 0.15s ease;
  padding: 4px 0;
}

.card-link:hover,
.card-link:focus-visible {
  color: var(--primary-blue-hover);
  text-decoration: underline;
  gap: 9px;
}

.card-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.15s ease;
}

.card-link:hover .card-arrow {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   7. Why Choose PhotoKB Section
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.feature-card:hover {
  border-color: var(--primary-blue);
  background-color: var(--bg-pale-blue);
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-pale-blue);
  border: 1px solid var(--border-blue-thin);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

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

.feature-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.35;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   8. About PhotoKB Section
   -------------------------------------------------------------------------- */
.about-card {
  background-color: #ffffff;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: 32px;
  max-width: 960px;
  margin: 0 auto;
}

.about-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.about-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   9. Frequently Asked Questions (Accessible Accordions)
   -------------------------------------------------------------------------- */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border-blue-thin);
  background-color: #ffffff;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  background: #ffffff;
  border: none;
  font-family: inherit;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.faq-question:hover {
  background-color: var(--bg-pale-blue);
  color: var(--primary-blue);
}

.faq-question[aria-expanded="true"] {
  background-color: var(--bg-pale-blue);
  color: var(--primary-blue);
}

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
  color: var(--primary-blue);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  background-color: #ffffff;
}

.faq-answer-inner {
  padding: 16px 24px 22px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  border-top: 1px dashed var(--border-blue-thin);
}

/* --------------------------------------------------------------------------
   10. Disclaimer Section
   -------------------------------------------------------------------------- */
.disclaimer-section {
  padding-top: 40px;
  padding-bottom: 48px;
  border-bottom: none;
}

.disclaimer-box {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--bg-pale-blue);
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  max-width: 960px;
  margin: 0 auto;
}

.disclaimer-icon-wrap {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  color: var(--primary-blue);
}

.disclaimer-icon {
  width: 26px;
  height: 26px;
}

.disclaimer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.disclaimer-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. Footer Section (5 Columns)
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--border-blue-thin);
  padding: 56px 0 24px;
  font-size: 0.875rem;
}

.footer-columns {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  margin-bottom: 12px;
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 0.875rem;
  max-width: 260px;
}

.footer-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.15s ease;
  display: inline-block;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--primary-blue);
  text-decoration: underline;
}

/* Footer Bottom Bar */
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal-links {
  list-style: none;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-legal-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
}

.footer-legal-links a:hover,
.footer-legal-links a:focus-visible {
  color: var(--primary-blue);
  text-decoration: underline;
}

.copyright-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   12. Notification Toast
   -------------------------------------------------------------------------- */
.toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--text-primary);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  max-width: 380px;
  border-left: 4px solid var(--primary-blue);
  animation: slideInUp 0.25s ease-out;
}

@keyframes slideInUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   13. Responsive Breakpoints
   Desktop: 3 cols
   Tablets (<= 992px): 2 cols
   Mobile (<= 640px): 1 col
   -------------------------------------------------------------------------- */

/* Tablet & Smaller Devices (max-width: 992px) */
@media (max-width: 992px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Footer wrapping */
  .footer-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .footer-col.brand-col {
    grid-column: span 2;
  }

  /* Mobile menu button becomes visible */
  .mobile-menu-toggle {
    display: flex;
  }

  /* Mobile Nav Dropdown */
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-blue-thin);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
    padding: 16px 20px;
    display: none;
  }

  .main-nav.is-open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
  }

  .header-browse-btn {
    display: none; /* Keep header compact on mobile */
  }
}

/* Small Screens / Mobile Phones (max-width: 640px) */
@media (max-width: 640px) {
  :root {
    --section-spacing: 40px;
    --card-padding: 18px;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 24px;
  }

  .upload-dropzone {
    padding: 32px 16px;
  }

  .dropzone-main-text {
    font-size: 1.1rem;
  }

  /* Exactly 1 card per row on mobile */
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-col.brand-col {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .faq-question {
    padding: 14px 16px;
    font-size: 0.98rem;
  }

  .faq-answer-inner {
    padding: 14px 16px 18px;
  }

  .toast-notification {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: calc(100% - 32px);
  }
}

/* --------------------------------------------------------------------------
   15. Dedicated Tool Page Styles (Shared by all Popular Tools)
   -------------------------------------------------------------------------- */
.tool-page-container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.breadcrumb-nav {
  margin-bottom: 24px;
  font-size: 0.875rem;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  flex-wrap: wrap;
  color: var(--text-muted);
}

.breadcrumb-list a {
  color: var(--primary-blue);
  text-decoration: none;
}

.breadcrumb-list a:hover {
  text-decoration: underline;
}

.tool-page-header {
  text-align: center;
  margin-bottom: 36px;
}

.tool-page-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.tool-page-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.5;
}

/* Tool Main Workspace Card */
.tool-workspace-card {
  background-color: #ffffff;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 48px;
}

.tool-workspace-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

@media (max-width: 820px) {
  .tool-workspace-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* Controls Column */
.tool-controls-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.control-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-field label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

.control-field input[type="text"],
.control-field input[type="number"],
.control-field select {
  height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: #ffffff;
  outline: none;
}

.control-field input:focus,
.control-field select:focus {
  border-color: var(--primary-blue);
  outline: 2px solid rgba(26, 115, 232, 0.2);
}

.control-field-inline {
  display: flex;
  gap: 16px;
  align-items: center;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
}

/* Preview Column */
.tool-preview-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-pale-blue);
  border: 1px dashed var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: 24px;
  min-height: 280px;
  text-align: center;
}

.preview-placeholder-text {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.preview-image-wrap {
  max-width: 100%;
  max-height: 320px;
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-blue-thin);
  background-color: #ffffff;
}

.preview-image-wrap img,
.preview-image-wrap canvas {
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
  display: block;
}

.meta-stats-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
}

.stat-pill {
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background-color: #ffffff;
  border: 1px solid var(--border-blue-thin);
  color: var(--text-primary);
}

.stat-pill.success {
  background-color: #ecfdf5;
  border-color: #a7f3d0;
  color: #065f46;
}

/* Preset Buttons Group */
.preset-btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.btn-preset {
  background-color: var(--bg-pale-blue);
  border: 1px solid var(--border-blue-thin);
  color: var(--primary-blue);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-preset:hover, .btn-preset.active {
  background-color: var(--primary-blue);
  color: #ffffff;
  border-color: var(--primary-blue);
}

.compact-dropzone {
  border: 2px dashed var(--border-blue-thin);
  border-radius: var(--radius-md);
  background-color: var(--bg-pale-blue);
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
}

.compact-dropzone:hover, .compact-dropzone.drag-over {
  border-color: var(--primary-blue);
  background-color: #e8f2fe;
}

.compact-dropzone-icon {
  width: 36px;
  height: 36px;
  margin: 0 auto 8px;
  display: block;
}

.compact-dropzone-text {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.compact-dropzone-sub {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.sample-photo-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--primary-blue);
  text-decoration: underline;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.sample-photo-link:hover {
  color: var(--primary-blue-hover);
}

.empty-preview-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  text-align: center;
}

.empty-preview-icon {
  width: 56px;
  height: 56px;
  color: #93c5fd;
  margin-bottom: 12px;
}

.empty-preview-text {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.empty-preview-sub {
  font-size: 0.8125rem;
  color: var(--text-muted);
  max-width: 240px;
  line-height: 1.4;
}

.btn-download {
  width: 100%;
  max-width: 280px;
}

/* Tool Guide Article / Educational Content */
.tool-guide-card {
  background-color: #ffffff;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  margin-bottom: 36px;
}

.tool-guide-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.tool-guide-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.tool-guide-card p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.steps-list {
  list-style: none;
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 20px 0;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  counter-increment: step-counter;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-pale-blue);
  border: 1px solid var(--border-blue-thin);
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-content strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 4px;
}

.step-content p {
  margin-bottom: 0;
}

/* Exam Spec Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9375rem;
}

.spec-table th,
.spec-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-blue-thin);
  text-align: left;
}

.spec-table th {
  background-color: var(--bg-pale-blue);
  font-weight: 700;
  color: var(--text-primary);
}

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

/* Related Tools Bar */
.related-tools-box {
  background-color: var(--bg-pale-blue);
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.related-tools-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.related-tools-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.related-tool-chip {
  padding: 8px 14px;
  background-color: #ffffff;
  border: 1px solid var(--border-blue-thin);
  border-radius: var(--radius-sm);
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
}

.related-tool-chip:hover {
  background-color: var(--bg-pale-blue-hover);
  border-color: var(--primary-blue);
}



/* Mobile overflow fix: let grid columns shrink & tables scroll */
.tool-workspace-grid > * { min-width: 0; }
.tool-controls-col select, .tool-controls-col input { max-width: 100%; }
@media (max-width: 640px) {
  .spec-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

/* ===== Signature tools & AEO content blocks ===== */
.quick-answer-box {
  border-left: 4px solid var(--primary-blue);
  background: rgba(26, 115, 232, 0.06);
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 22px;
}
.quick-answer-box h2 { margin-top: 0; }
.quick-answer-box p { margin-bottom: 0; }
.kb-display { color: var(--primary-blue); font-weight: 700; }
.field-hint { font-size: 0.8125rem; color: var(--text-secondary); margin: 6px 0 0; line-height: 1.45; }
.field-hint a { color: var(--primary-blue); }
.tool-controls-col .checkbox-label { display: flex; align-items: flex-start; gap: 8px; cursor: pointer; margin-bottom: 8px; font-weight: 400; }
.tool-controls-col .checkbox-label input { margin-top: 3px; flex: 0 0 auto; width: auto; }
.tool-btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.tool-btn-row .btn { flex: 1 1 140px; }
.tool-error {
  margin: 0;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.875rem;
  line-height: 1.45;
  background: #fdecea;
  color: #a61b1b;
  border: 1px solid #f5c2c0;
}
.tool-error.is-info { background: #fff8e1; color: #7a5200; border-color: #f3dc9b; }
.tool-error[hidden] { display: none; }
.preview-image-wrap.is-transparent {
  background-color: #fff;
  background-image:
    linear-gradient(45deg, #e3e6ea 25%, transparent 25%),
    linear-gradient(-45deg, #e3e6ea 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #e3e6ea 75%),
    linear-gradient(-45deg, transparent 75%, #e3e6ea 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
}
.compare-wrap { margin-bottom: 8px; }
.compare-wrap img { max-width: 100%; max-height: 160px; display: block; margin: 0 auto; border: 1px solid var(--border-blue-thin); border-radius: 6px; }
.compare-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-secondary); margin: 6px 0; }
.privacy-note { font-size: 0.8125rem; color: var(--text-secondary); text-align: center; margin: 10px 0 0; }
.tool-faq { border: 1px solid var(--border-blue-thin); border-radius: 6px; padding: 14px; margin-bottom: 12px; }
.tool-faq summary { cursor: pointer; list-style-position: outside; }
.tool-faq p { margin: 8px 0 0; color: var(--text-secondary); }
.tool-trust-box { margin-top: 24px; padding: 14px 16px; border: 1px dashed var(--border-blue-thin); border-radius: 6px; }
.tool-trust-box h3 { margin-top: 0; }
.tool-trust-box p { margin-bottom: 0; font-size: 0.9375rem; }

/* Keep the "try sample" button clickable above the hidden file input */
.compact-dropzone .sample-photo-link { position: relative; z-index: 3; }

/* ======================= v2026-11 unified tools ======================= */
[hidden] { display: none !important; }
:root { --section-spacing: 36px; }
@media (max-width: 768px) { :root { --section-spacing: 26px; } }
.section-header { margin-bottom: 20px; }
.hero-section { padding: 32px 16px 22px; }
.tool-page-container { padding: 18px 16px 40px; }
.tool-page-header { margin-bottom: 18px; }
.tool-workspace-card { padding: 22px; margin-bottom: 22px; }
.tool-guide-card { padding: 26px 24px; margin-bottom: 22px; }
.tool-controls-col { gap: 14px; }
@media (max-width: 640px) {
  .tool-workspace-card { padding: 14px; }
  .tool-guide-card { padding: 18px 14px; }
  .tool-page-container { padding: 12px 12px 32px; }
}
.container.narrow { max-width: 880px; }
.tools-grid { gap: 16px; }
.btn-sm { padding: 6px 12px; font-size: 0.875rem; }
.inline-field { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.inline-field label { margin: 0; font-weight: 500; font-size: 0.875rem; white-space: nowrap; }
.inline-field input { max-width: 110px; }
.nd-box { border: 1px solid var(--border-blue-thin); border-radius: 8px; padding: 12px; }
.nd-box input[type="text"] { width: 100%; }

/* card: whole card clickable via stretched link */
.tool-card { position: relative; }
.card-stretch { color: inherit; text-decoration: none; }
.card-stretch::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.card-stretch:focus-visible { outline: none; }
.tool-card:focus-within { box-shadow: 0 0 0 3px rgba(26,115,232,.35); }

/* crop stage */
.crop-wrap { margin-bottom: 8px; }
.crop-stage { position: relative; display: flex; justify-content: center; background: #f1f5f9; border-radius: 8px; padding: 12px; touch-action: none; user-select: none; }
.crop-stage canvas { display: block; max-width: 100%; }
.crop-box { position: absolute; border: 2px solid #1a73e8; box-shadow: 0 0 0 9999px rgba(15,23,42,.45); cursor: move; touch-action: none; box-sizing: border-box; }
.crop-stage { overflow: hidden; }
.crop-h { position: absolute; width: 18px; height: 18px; background: #fff; border: 2px solid #1a73e8; border-radius: 50%; }
.crop-h.nw { left: -10px; top: -10px; cursor: nwse-resize; }
.crop-h.ne { right: -10px; top: -10px; cursor: nesw-resize; }
.crop-h.sw { left: -10px; bottom: -10px; cursor: nesw-resize; }
.crop-h.se { right: -10px; bottom: -10px; cursor: nwse-resize; }
@media (pointer: coarse) { .crop-h { width: 26px; height: 26px; } .crop-h.nw,.crop-h.sw{left:-14px}.crop-h.ne,.crop-h.se{right:-14px}.crop-h.nw,.crop-h.ne{top:-14px}.crop-h.sw,.crop-h.se{bottom:-14px} }

/* pdf tools */
.file-list { list-style: none; margin: 0 0 12px; padding: 0; display: flex; flex-direction: column; gap: 6px; width: 100%; }
.file-row { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid var(--border-blue-thin); border-radius: 6px; background: #fff; font-size: 0.875rem; }
.file-row-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.file-row-size { color: var(--text-secondary); white-space: nowrap; }
.row-btn { border: 1px solid var(--border-blue-thin); background: #fff; border-radius: 4px; width: 30px; height: 30px; cursor: pointer; font-size: 0.9rem; flex: 0 0 auto; }
.row-btn:hover { background: #eef4ff; }
.progress-text { font-size: 0.875rem; color: var(--text-secondary); margin: 10px 0 4px; text-align: center; }
.progress-bar { width: 100%; height: 8px; }
.result-box { margin-top: 12px; padding: 12px; border: 1px solid #bbf7d0; background: #f0fdf4; border-radius: 8px; width: 100%; }
.estimate { font-weight: 600; }
.tool-preview-col .tool-btn-row { width: 100%; }

/* homepage picker + search */
.home-picker { max-width: 720px; margin: 14px auto 0; padding: 14px; border: 1px solid var(--border-blue-thin); border-radius: 10px; background: #fff; text-align: left; }
.home-picker .file-info-badge { display: flex; align-items: center; gap: 6px; font-size: 0.9rem; }
.home-picker .file-name { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 70%; }
.home-picker .btn-clear-file { margin-left: auto; }
.picker-title { margin: 10px 0 8px; font-weight: 600; }
.picker-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.picker-btn { display: inline-block; padding: 8px 12px; border: 1px solid #1a73e8; border-radius: 999px; color: #1a73e8; text-decoration: none; font-size: 0.875rem; font-weight: 600; background: #fff; }
.picker-btn:hover, .picker-btn:focus-visible { background: #1a73e8; color: #fff; }
.tool-search { max-width: 520px; margin: 14px auto 0; }
.tool-search input { width: 100%; padding: 11px 14px; border: 1px solid var(--border-blue-thin); border-radius: 999px; font-size: 1rem; }
.home-guide { margin: 0; }
.compact-steps .step-item { margin-bottom: 10px; }
.faq-section .tool-faq { background: #fff; }
.footer-heading { font-size: 1rem; }
img { max-width: 100%; height: auto; }

/* Fix: hidden file inputs must not cover the page (they are opened via JS) */
.compact-dropzone, .upload-dropzone { position: relative; }
.file-input-hidden { position: absolute !important; top: 0; left: 0; width: 1px !important; height: 1px !important; opacity: 0; pointer-events: none; overflow: hidden; }
.control-field-inline { display: flex; gap: 10px; flex-wrap: wrap; }
.control-field-inline > .control-field { min-width: 0; flex: 1 1 120px; }
.tool-controls-col input[type="number"], .tool-controls-col input[type="text"], .tool-controls-col input[type="date"], .tool-controls-col select { width: 100%; min-width: 0; max-width: 100%; box-sizing: border-box; }
.inline-field input[type="number"] { width: 110px; }
.tool-controls-col input[type="color"] { width: 100%; height: 40px; padding: 2px; }
.upload-dropzone { padding: 26px 20px; } .dropzone-icon-wrap { margin-bottom: 8px; }
/* legal pages */
.footer-legal-links { margin-left: auto; justify-content: flex-end; padding: 0; }
@media (max-width: 640px) { .footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; } .footer-legal-links { margin-left: 0; justify-content: flex-start; gap: 12px 16px; } }
.legal-page .tool-guide-card { max-width: 860px; margin-left: auto; margin-right: auto; }
.legal-lead { font-size: 1.05rem; }
.contact-card { border: 1px solid var(--border-blue-thin); background: #f5f9ff; border-radius: 10px; padding: 16px 18px; margin: 16px 0; }
.contact-card h2 { margin-top: 0; }
.contact-email { font-size: 1.25rem; font-weight: 700; margin: 4px 0 8px; }
.contact-form { display: flex; flex-direction: column; gap: 12px; max-width: 560px; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; box-sizing: border-box; padding: 10px 12px; border: 1px solid var(--border-blue-thin); border-radius: 6px; font: inherit; }
.contact-form .btn { align-self: flex-start; }

/* ===== Share button + popup ===== */
.share-fab { position: fixed; left: 16px; bottom: 16px; z-index: 900; display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border: 0; border-radius: 999px; background: linear-gradient(135deg, #6366f1, #4338ca); color: #fff; font: 700 0.875rem/1 inherit; font-family: inherit; cursor: pointer; box-shadow: 0 6px 16px rgba(79,70,229,.35); }
.share-fab svg { width: 16px; height: 16px; }
.share-fab:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(79,70,229,.45); }
.share-fab:focus-visible { outline: 3px solid #a5b4fc; outline-offset: 2px; }
.share-overlay { position: fixed; inset: 0; z-index: 1000; background: rgba(15,23,42,.45); display: flex; align-items: center; justify-content: center; padding: 16px; }
body.share-open { overflow: hidden; }
.share-modal { width: 100%; max-width: 360px; max-height: 86vh; overflow-y: auto; background: #fff; border-radius: 12px; box-shadow: 0 20px 50px rgba(15,23,42,.3); }
.share-head { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-bottom: 1px solid #eef0f4; background: #fafbff; position: sticky; top: 0; z-index: 1; }
.share-head-icon { width: 34px; height: 34px; flex: 0 0 34px; border-radius: 8px; background: #e0e7ff; color: #4f46e5; display: flex; align-items: center; justify-content: center; }
.share-head-icon svg { width: 18px; height: 18px; }
.share-title { margin: 0; font-weight: 800; font-size: 1rem; color: #0f172a; }
.share-sub { margin: 2px 0 0; font-size: 0.75rem; color: #64748b; line-height: 1.3; }
.share-close { margin-left: auto; width: 30px; height: 30px; flex: 0 0 30px; border: 0; border-radius: 50%; background: #eef0f4; color: #334155; font-size: 1.2rem; line-height: 1; cursor: pointer; }
.share-close:hover { background: #e2e8f0; }
.share-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 10px; }
.share-native { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 9px 12px; border: 0; border-radius: 8px; background: linear-gradient(135deg, #6366f1, #4338ca); color: #fff; font-weight: 700; font-size: 0.875rem; font-family: inherit; cursor: pointer; }
.share-native svg { width: 16px; height: 16px; }
.share-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.share-item { display: flex; flex-direction: column; align-items: center; gap: 5px; padding: 9px 4px; border: 1px solid #e5e9f2; border-radius: 8px; background: #f8fafc; color: #1e293b; font-size: 0.75rem; font-weight: 600; text-decoration: none; text-align: center; }
.share-item:hover, .share-item:focus-visible { border-color: #a5b4fc; background: #eef2ff; }
.share-ic { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; }
.share-ic svg { width: 18px; height: 18px; }
.sh-wa { background: #dcfce7; } .sh-tg { background: #e0f2fe; } .sh-fb { background: #dbeafe; }
.sh-x { background: #0f172a; } .sh-li { background: #e0e7ff; } .sh-mail { background: #fee2e2; }
.share-copy { border: 1px solid #e5e9f2; border-radius: 8px; background: #f8fafc; padding: 9px 10px; }
.share-copy label { display: block; font-size: 0.6875rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: #64748b; margin-bottom: 6px; }
.share-copy-row { display: flex; gap: 6px; }
.share-copy-row input { flex: 1; min-width: 0; padding: 7px 9px; border: 1px solid #cbd5e1; border-radius: 6px; font-size: 0.8125rem; background: #fff; color: #334155; }
.share-copy-btn { display: inline-flex; align-items: center; gap: 5px; padding: 7px 12px; border: 0; border-radius: 6px; background: #0f172a; color: #fff; font-weight: 700; font-size: 0.8125rem; font-family: inherit; cursor: pointer; white-space: nowrap; }
.share-copy-btn svg { width: 14px; height: 14px; }
.share-copy-btn.ok { background: #16a34a; }
.share-qr-toggle { display: flex; align-items: center; justify-content: center; gap: 6px; border: 0; border-top: 1px solid #eef0f4; background: none; padding: 10px 0 2px; color: #4f46e5; font-weight: 700; font-size: 0.8125rem; font-family: inherit; cursor: pointer; }
.share-qr-toggle svg { width: 16px; height: 16px; }
.share-qr { text-align: center; }
.share-qr svg { width: 160px; height: 160px; }
.share-qr p { margin: 4px 0 0; font-size: 0.75rem; color: #64748b; }
@media (max-width: 480px) { .share-fab { left: 12px; bottom: 12px; padding: 7px 12px; } }
@media print { .share-fab, .share-overlay { display: none !important; } }
/* background remover */
.bg-stage { position: relative; display: flex; justify-content: center; border-radius: 8px; padding: 8px; background-color: #f1f5f9; touch-action: none; overflow: hidden; }
.bg-stage.is-transparent { background-color: #fff; background-image: linear-gradient(45deg,#e3e6ea 25%,transparent 25%),linear-gradient(-45deg,#e3e6ea 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e3e6ea 75%),linear-gradient(-45deg,transparent 75%,#e3e6ea 75%); background-size: 16px 16px; background-position: 0 0,0 8px,8px -8px,-8px 0; }
.bg-stage canvas { display: block; max-width: 100%; }
.bg-stage.brush-on canvas { cursor: none; }
.brush-cursor { position: absolute; border: 2px solid #1a73e8; border-radius: 50%; pointer-events: none; box-shadow: 0 0 0 1px #fff; left: -9999px; }
.brush-btns .btn.active { background: #1a73e8; color: #fff; border-color: #1a73e8; }
.compare-btn { margin: 8px auto 0; display: block; user-select: none; touch-action: none; }
#bg-work { width: 100%; }
/* image compressor */
.cmp-list { list-style: none; margin: 0 0 10px; padding: 0; width: 100%; display: flex; flex-direction: column; gap: 6px; max-height: 420px; overflow-y: auto; }
.cmp-row { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border: 1px solid var(--border-blue-thin); border-radius: 6px; background: #fff; }
.cmp-thumb { width: 44px; height: 44px; flex: 0 0 44px; object-fit: cover; border-radius: 4px; background: #eef2f7; }
.cmp-info { flex: 1; min-width: 0; display: flex; flex-direction: column; font-size: 0.8125rem; }
.cmp-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cmp-size { color: var(--text-secondary); }
.cmp-save { color: #15803d; font-weight: 700; }
.cmp-same { color: #a16207; }
.cmp-summary { width: 100%; margin: 0 0 8px; padding: 8px 10px; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 6px; font-weight: 600; font-size: 0.875rem; color: #166534; }
.cmp-info { text-align: left; align-items: flex-start; }