:root {
  --bg: #f8fafc;
  --bg-alt: #e2e8f0;
  --card: #ffffff;
  --glass-border: rgba(148, 163, 184, 0.4);
  --muted: #475569;
  --muted-2: #64748b;
  --accent1: #1d4ed8;
  --accent2: #2563eb;
  --outline: rgba(37, 99, 235, 0.35);
  --text: #1e293b;
  --action: #10b981;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800&family=Poppins:wght@400;600&display=swap');

html,
body {
  height: 100%;
  width: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.15), transparent 45%),
    linear-gradient(135deg, #f8fafc, #e3edff 55%, #f8fafc);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Make file inputs visible to the browser while remaining hidden from view.
   Some mobile browsers block programmatic `input.click()` on elements with
   `display:none` or `hidden`. Using an off-screen placement keeps inputs
   focusable/clickable and preserves desktop behavior. */
.picker-hidden {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

body,
html {
}

.container {
  width: 100%;
  max-width: none;
  margin: 0;
  /* Top padding is driven from the actual header height so the sticky header never
     visually crops page content — updated dynamically from JS into --site-nav-height. */
  padding: calc(var(--site-nav-height, 72px) + 12px) clamp(32px, 6vw, 88px) 96px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.92);
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: none;
  box-sizing: border-box;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 2vw, 24px);
  flex: 1 1 auto;
}

.nav-group {
  position: relative;
}

.nav-link {
  border: none;
  background: transparent;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted-2);
  padding: 8px 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
} 

.nav-link:hover,
.nav-group.open .nav-link,
.nav-link.active {
  color: var(--accent2);
  background: rgba(37, 99, 235, 0.12);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.24);
}

.nav-caret {
  font-size: 10px;
  line-height: 1;
  transform: translateY(-1px);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 0;
  min-width: 240px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: #fff;
  box-shadow: 0 20px 55px rgba(15, 23, 42, 0.25);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 140ms ease, transform 140ms ease;
  z-index: 1000;
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 24px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-left: 1px solid rgba(148, 163, 184, 0.45);
  border-top: 1px solid rgba(148, 163, 184, 0.45);
  transform: rotate(45deg);
}

.nav-group.open .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-dropdown-item {
  background: transparent;
  border: none;
  text-align: left;
  padding: 10px 12px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  color: var(--text);
  transition: background-color 140ms ease, transform 140ms ease;
}

.nav-dropdown-item:hover {
  background: rgba(37, 99, 235, 0.08);
  transform: translateX(2px);
}

.nav-item-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item-text strong {
  font-size: 14px;
  letter-spacing: 0.2px;
}

.nav-item-text span {
  font-size: 12px;
  color: var(--muted-2);
}

.nav-item-icon {
  font-size: 14px;
  color: var(--muted-2);
}

.site-nav {
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  /* Reduced vertical padding so header appears smaller across devices */
  padding: 10px clamp(12px, 3vw, 32px);
  border-radius: 0;
  background: linear-gradient(135deg, rgba(248, 250, 252, 0.95), rgba(226, 239, 255, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 10px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text);
  position: fixed !important; /* stick header to the top */
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 2000 !important; /* ensure header stays above other elements */
  min-height: 48px;
  transform: translateZ(0); /* promote to its own layer to avoid clipping */
  width: 100%;
  max-width: 100vw;
  max-height: 96px; /* cap desktop header height */
}

@media (max-width: 420px) {
  .site-nav {
    max-height: 72px; /* stricter cap for very narrow phones */
  }
}  

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex: 0 0 auto;
  margin-left: auto;
  padding-right: clamp(16px, 4vw, 60px);
}

.nav-rail {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  flex: 1 1 auto;
}

/* Removed mobile nav toggle & scrim styles (hamburger removed) */

body.nav-rail-open {
  overflow: hidden;
}

/* Hide hamburger by default (shown on small screens via @media) */
.nav-toggle {
  display: none;
}

/* Nav scrim overlay used for off-canvas nav on mobile */
.nav-scrim {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 1200;
}

.nav-scrim.visible {
  opacity: 1;
  pointer-events: auto;
}

.nav-btn {
  padding: 8px 12px;
  font-size: 13px;
} 

.home-btn {
  text-transform: none;
  letter-spacing: 0.2px;
  font-size: 13px;
  padding: 8px 14px;
}

/* Mobile-only Blog button: hidden on desktop, visible on <=768px */
.mobile-blog-btn {
  display: none;
}

/* Mobile Convert menu (mobile-only) */
.mobile-convert {
  position: relative;
}
.mobile-convert-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--card);
  border: 1px solid rgba(148,163,184,0.35);
  border-radius: 10px;
  padding: 6px;
  box-shadow: 0 10px 30px rgba(15,23,42,0.18);
  z-index: 1200;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mobile-convert-menu.open,
.mobile-convert-menu[aria-hidden="false"] {
  display: flex;
}
.mobile-convert-item {
  text-align: left;
  padding: 8px 12px;
  width: 100%;
}

/* Keep this menu mobile-only: hide on larger screens */
@media (min-width: 769px) {
  .mobile-convert,
  .mobile-convert-menu {
    display: none !important;
  }
}

/* Mobile-only page helpers */
.page.mobile-only {
  display: none;
}
@media (max-width: 768px) {
  .page.mobile-only {
    display: block;
  }
  .convert-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .mobile-convert .mobile-convert-menu {
    right: 8px;
    left: auto;
  }

  /* Fix for menu staying underneath page when user scrolls while holding the button:
     On mobile, make the inline convert menu fixed and above the content so it doesn't
     get visually clipped by scrolling. */
  @media (max-width: 768px) {
    .mobile-convert .mobile-convert-menu {
      position: fixed;
      top: calc(var(--site-nav-height, 72px) + 8px);
      right: 8px;
      left: auto;
      z-index: 10000; /* above header and content */
      will-change: transform;
    }

    /* If the inline menu has no items (modal-only flow), hide it to avoid any
       overlap with header controls like high-contrast or accessibility buttons. */
    .mobile-convert .mobile-convert-menu:empty {
      display: none !important;
      pointer-events: none;
      width: 0;
      height: 0;
      overflow: hidden;
    }
  }

  /* Modal styles */
  .mobile-convert-modal {
    position: fixed;
    inset: 0;
    z-index: 1600;
    display: none;
    align-items: center;
    justify-content: center;
  }
  .mobile-convert-modal[aria-hidden="false"],
  .mobile-convert-modal.open {
    display: flex;
  }
  .mobile-convert-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    pointer-events: auto;
  }
  .mobile-convert-modal-content {
    position: relative;
    background: var(--card);
    border-radius: 12px;
    padding: 16px;
    width: min(92%, 420px);
    max-height: 80vh;
    overflow: auto;
    box-shadow: 0 20px 60px rgba(15,23,42,0.3);
    z-index: 9999; /* ensure modal sits above header */
  }
  body.modal-open {
    overflow: hidden;
  }
  .mobile-convert-modal-close {
    position: absolute;
    right: 8px;
    top: 8px;
    border-radius: 999px;
  }
}

@media (max-width: 768px) {
  .mobile-blog-btn {
    display: inline-flex;
    margin-left: 8px;
    padding: 8px 12px;
    font-size: 13px;
    text-transform: none;
  }
}

/* Ensure the mobile blog button is explicitly hidden on larger screens to avoid duplicates */
@media (min-width: 769px) {
  .mobile-blog-btn { display: none !important; }
}

.logo-mark {
  position: relative;
  /* Reduced mark size to make header more compact */
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(145deg, #f97316, #ec4899);
  box-shadow: 0 10px 20px rgba(236, 72, 153, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
} 

.logo-sigil {
  font-weight: 800;
  font-size: 14px; /* smaller mark text for compact header */
  letter-spacing: 0.4px;
}

.logo-glow {
  position: absolute;
  inset: 4px;
  border-radius: 14px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.4), transparent 70%);
  opacity: 0.7;
  pointer-events: none;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-title {
  font-weight: 800;
  font-size: 18px; /* slightly smaller title to reduce header height */
  letter-spacing: 0.2px;
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
} 

.logo-title .accent {
  color: var(--accent1);
}

.logo-tagline {
  font-size: 11px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}

@media (max-width: 900px) {
  .site-nav {
    justify-content: center;
  }

  .nav-menu {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
}

@media (max-width: 540px) {
  .nav-menu {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 6px 10px;
  }

  .nav-link {
    flex: 1;
    min-width: 120px;
    text-align: center;
  }

  /* nav auth buttons removed per latest design */
  .nav-dropdown::before {
    display: none;
  }

  .nav-right {
    width: 100%;
    justify-content: flex-end;
  }
}

@media (max-width: 720px) {
  .nav-group {
    flex: 1 1 45%;
  }

  .nav-dropdown {
    position: static;
    box-shadow: none;
    border-radius: 16px;
    margin-top: 8px;
    opacity: 0;
    transform: none;
    display: none;
    pointer-events: none;
  }

  .nav-group.open .nav-dropdown {
    opacity: 1;
    display: flex;
    pointer-events: auto;
  }

  .nav-dropdown::before {
    display: none;
  }
}

@media (max-width: 768px) {
  html, body {
    overflow-x: hidden;
  }

  /* Ensure content is padded below header + mobile toolstrip to avoid overlap */
  :root {
    --mobile-toolstrip-height: 48px;
  }

  .container {
    padding: calc(var(--site-nav-height, 72px) + var(--mobile-toolstrip-height, 48px) + 12px) 16px 64px;
  }

  .card {
    padding: 16px;
  }

  /* Mobile header style: white background, thin light-gray bottom border, full-width box-sizing */
  .site-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    width: 100%;
    max-width: 100vw; /* prevent horizontal cropping */
    box-sizing: border-box;
    gap: 8px;
    padding: 10px clamp(12px, 4vw, 28px);
    background: #ffffff; /* clean white background */
    border-bottom: 1px solid #e0e0e0; /* very thin light-gray border */
  }

  .nav-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
    min-width: 0; /* allow contents to shrink */
  }

  /* Keep logo text from forcing the header wider than the viewport */
  .logo-text {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .logo-title {
    font-size: clamp(14px, 3.5vw, 18px);
  }

  /* Hide tagline on small screens to preserve space */
  .logo-tagline {
    display: none;
  }

  /* Inline nav rail that can shrink and wrap when needed */
  .nav-rail {
    position: static;
    transform: none;
    visibility: visible;
    pointer-events: auto;
    width: auto;
    background: transparent;
    box-shadow: none;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1 1 auto;
    min-width: 0;
    justify-content: flex-end;
  }

  /* Allow menu and actions to wrap if there's not enough space */
  .nav-menu,
  .nav-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    min-width: 0;
  }

  /* Remove primary nav links and action buttons from the header on mobile (<=768px) */
  /* This keeps desktop/laptop behavior unchanged while decluttering the mobile header */
  .nav-menu .nav-link {
    display: none !important;
  }

  .nav-actions {
    display: none !important;
  }

  /* Keep menu items horizontal, but wrap to new lines when needed */
  .nav-menu {
    flex-direction: row;
    justify-content: flex-start;
  }

  .hero-content,
  .hero-panel {
    flex-basis: 100%;
  }

  .hero-title {
    font-size: clamp(28px, 8vw, 36px);
  }

  .hero-stats li {
    min-width: 0;
    flex: 1 1 120px;
  }

  .dropzone {
    min-height: 200px;
    padding: 24px;
  }

  .resize-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-columns {
    text-align: left;
  }

  /* For very narrow screens, stack actions below the menu with full-width buttons */
  @media (max-width: 420px) {
    .nav-actions {
      width: 100%;
      gap: 10px;
      order: 3;
      justify-content: stretch;
    }

    .nav-btn {
      width: 100%;
    }

    .logo-title {
      font-size: 14px;
    }
  }
}

/* Narrow-phone overlay nav removed — nav rail remains inline on small screens */

/* Very narrow phones: ensure nav menu is scrollable and nav actions stack below to avoid overlap */
@media (max-width: 420px) {
  .nav-rail {
    justify-content: flex-start;
    align-items: center;
  }

  .nav-menu {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    white-space: nowrap;
    flex: 1 1 auto;
    min-width: 0;
  }

  .nav-menu .nav-group {
    display: inline-flex;
    flex: 0 0 auto;
    width: auto;
  }

  .nav-link {
    white-space: nowrap;
  }

  .nav-actions {
    order: 3;
    width: 100%;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: space-between;
    padding-top: 8px;
  }
}

/* nav-scrim removed */

/* Mobile toolstrip hidden by default (desktop unaffected) */
.mobile-toolstrip {
  display: none;
}

/* Mobile toolstrip styles (mobile-only quick workflow buttons) */
@media (max-width: 768px) {
  .mobile-toolstrip {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #ffffff;
    border-bottom: 1px solid #e0e0e0;
    box-sizing: border-box;
    width: 100%;
    max-width: 100vw;
    /* Make toolstrip fixed immediately below the header only on mobile */
    position: fixed;
    top: calc(var(--site-nav-height, 72px));
    left: 0;
    right: 0;
    z-index: 1999;
    height: var(--mobile-toolstrip-height, 48px);
  }

  .mobile-toolstrip .mobile-tools {
    display: flex;
    gap: 8px;
    flex-wrap: nowrap;
    overflow-x: auto;
  }

  .mobile-toolstrip .mobile-tool {
    padding: 6px 10px;
    font-size: 14px;
    border-radius: 10px;
    white-space: nowrap;
  }
}

.a11y-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-bottom: 16px;
}

.quick-actions {
  margin: 18px 0 26px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.quick-card {
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: linear-gradient(135deg, #ffffff, #eef4ff);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  color: var(--text);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.quick-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent1);
  box-shadow: 0 25px 45px rgba(37, 99, 235, 0.18);
}

.quick-card strong {
  font-size: 16px;
  letter-spacing: 0.3px;
}

.quick-card span {
  font-size: 13px;
  color: var(--muted);
}

.quick-icon {
  font-size: 22px;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}

.section-head .eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--accent1);
  font-weight: 700;
}

.trust-section .section-head,
.trust-section .section-head h2 {
  text-align: center;
}

.trust-section .section-head h2 {
  font-size: clamp(32px, 5vw, 44px);
  color: #0f3cc9;
}

.trust-section,
.guide-section,
.physics-section,
.exam-section,
.faq-section {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(226, 239, 255, 0.9));
  border: 1px solid var(--glass-border);
}

.trust-grid,
.physics-grid,
.exam-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.trust-card,
.exam-card {
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(248, 250, 252, 0.85);
  padding: 18px;
  box-shadow: 0 18px 35px rgba(15, 23, 42, 0.08);
}

.trust-icon {
  font-size: 24px;
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.12);
  margin-bottom: 10px;
}

.trust-card h3,
.exam-card h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.trust-card p,
.exam-card p {
  margin: 0;
  color: var(--muted-2);
}

.howto-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.howto-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(15, 23, 42, 0.035);
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent2);
  color: #fff;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.howto-list h3 {
  margin: 0 0 4px;
}

.howto-list p {
  margin: 0;
  color: var(--muted);
}

.physics-grid article {
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(15, 23, 42, 0.04);
  padding: 18px;
}

.physics-grid h3 {
  margin: 0 0 6px;
}

.physics-grid p {
  margin: 0;
  color: var(--muted);
}

.exam-card ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.exam-card li {
  margin-bottom: 6px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.faq-grid details {
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: #fff;
  padding: 16px 18px;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.07);
}

.faq-grid summary {
  font-weight: 600;
  cursor: pointer;
}

.faq-grid p {
  margin-bottom: 0;
  color: var(--muted-2);
}

.global-footer {
  margin-top: 48px;
  padding: 48px clamp(24px, 8vw, 120px);
  background: linear-gradient(135deg, #0b1223, #142c73);
  color: #f8fafc;
}

.global-footer a {
  color: #cbd5f5;
  text-decoration: none;
  transition: color 160ms ease;
}

.global-footer a:hover {
  color: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 1.5fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: flex-start;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding-bottom: 32px;
  margin-bottom: 24px;
}

.footer-brand {
  max-width: 420px;
}

.footer-logo {
  font-size: clamp(26px, 4vw, 32px);
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.footer-logo span {
  color: #7dd3fc;
}

.footer-brand p {
  margin: 0 0 12px;
  color: #dbeafe;
}

.footer-note {
  font-size: 13px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: #93c5fd;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px 32px;
}

.footer-title {
  font-size: 14px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: #a5b4fc;
  margin: 0 0 10px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-col li a {
  font-size: 14px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-social {
  display: flex;
  gap: 16px;
  font-weight: 600;
}

.footer-copy {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.3px;
}

@media (max-width: 720px) {
  .howto-list li {
    grid-template-columns: 1fr;
  }

  .step-number {
    margin-bottom: 8px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.hero,
.card,
.dropzone,
.preview,
.conversion-module,
.enhance-module,
.compress-column,
.compress-preview-pane {
  border-radius: 22px;
  border: 1px solid var(--glass-border);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(237, 242, 255, 0.95));
  box-shadow: 0 25px 70px rgba(15, 23, 42, 0.12);
  color: var(--text);
}

.workflow-belt,
.trust-section,
.guide-section,
.physics-section,
.exam-section,
.faq-section {
  border: none;
}

#page1 > section.card:nth-of-type(-n + 2) {
  border: none;
}

/* Page-specific tweaks: remove outer border for Images ➜ PDF */
#pageImageToPdf .card {
  border: none;
}

/* Remove outer border for other convert pages */
#pagePdfToImage .card,
#pageMergePdf .card,
#pageSignPdf .card,
#pageSplitPdf .card {
  border: none;
}

.hero {
  padding: 20px 22px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-landing {
  gap: 24px;
  align-items: stretch;
  flex-wrap: wrap;
}

.hero-content {
  flex: 2 1 420px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 0.35px;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.hero-title {
  font-size: clamp(32px, 4vw, 46px);
  margin: 0;
  line-height: 1.1;
  color: var(--text);
}

.hero-lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 640px;
  margin: 0;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.hero-btn {
  min-width: 220px;
}

.hero-stats {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats li {
  background: rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 16px;
  padding: 12px 18px;
  min-width: 150px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-stats strong {
  font-size: 28px;
  color: var(--text);
}

.hero-stats span {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.2px;
}

.hero-panel {
  flex: 1 1 280px;
  border: 1.5px dashed rgba(37, 99, 235, 0.35);
  border-radius: 20px;
  padding: 18px;
  background: rgba(241, 245, 255, 0.8);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-pill {
  align-self: flex-start;
  font-size: 12px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--accent1);
  background: rgba(37, 99, 235, 0.12);
  border-radius: 999px;
  padding: 4px 12px;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-badges span {
  font-size: 12px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--muted);
}

.workflow-belt {
  margin-bottom: 22px;
  padding: 26px;
}

.workflow-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.workflow-head h2 {
  margin: 4px 0 0;
  font-size: 28px;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  width: 100%;
}

.workflow-card {
  border-radius: 18px;
  border: 1.5px solid rgba(148, 163, 184, 0.35);
  background: rgba(248, 250, 252, 0.95);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
  font: inherit;
  color: inherit;
  background-clip: padding-box;
  outline: none;
  appearance: none;
}

.workflow-card:hover,
.workflow-card:focus-visible {
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 18px 45px rgba(37, 99, 235, 0.18);
  transform: translateY(-4px);
  outline: 3px solid rgba(37, 99, 235, 0.4);
  outline-offset: 2px;
}

.workflow-card h3 {
  margin: 0;
  font-size: 18px;
  color: var(--text);
}

.workflow-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.workflow-chip {
  font-size: 12px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--accent1);
  background: rgba(37, 99, 235, 0.12);
  border-radius: 999px;
  padding: 4px 10px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  align-self: flex-start;
}

.workflow-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent1);
  margin-top: auto;
}

@media (max-width: 768px) {
  .hero {
    flex-direction: column;
  }

  .hero-btn {
    width: 100%;
    min-width: 0;
  }

  .workflow-head {
    flex-direction: column;
    align-items: flex-start;
  }
}

.hero-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.brand {
  font-weight: 900;
  font-size: 32px;
  color: var(--text);
  letter-spacing: -0.5px;
}

.brand .accent {
  color: var(--accent1);
  margin-left: 8px;
}

.tag {
  color: var(--muted);
  margin: 8px 0 0;
  font-weight: 500;
  font-size: 14px;
  line-height: 1.4;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.45px;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  margin: 0;
}

.card {
  padding: 26px;
}

.lead {
  color: var(--muted);
  margin-top: 6px;
  margin-bottom: 12px;
}

.resize-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr) minmax(0, 1.1fr);
  gap: 20px;
  align-items: start;
}

.resize-column,
.resize-preview-pane {
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.4);
  border-radius: 22px;
  padding: 20px 22px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

.resize-column h3 {
  margin: 0;
  color: var(--text);
}

.resize-column .lead {
  margin: 6px 0 16px;
  font-size: 14px;
  color: var(--muted);
}

@media (max-width: 1200px) {
  .resize-grid {
    grid-template-columns: 1fr;
  }
}

.conversion-card {
  margin-top: 20px;
}

.conversion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.merge-layout,
.conversion-preview-layout {
  grid-template-columns: minmax(280px, 420px) minmax(280px, 1fr);
  align-items: stretch;
}

@media (max-width: 960px) {
  .merge-layout,
  .conversion-preview-layout {
    grid-template-columns: 1fr;
  }
}

.merge-preview-panel {
  padding: 20px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 24px;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.96), rgba(236, 245, 255, 0.9));
  min-height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.08);
}

.merge-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.merge-preview-head h3 {
  margin: 0;
  font-size: 18px;
}

.merge-preview-hint {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.merge-preview-meta {
  font-size: 12px;
  color: var(--muted-2);
  white-space: nowrap;
}

/* Mobile: center conversion panels and their action buttons to ensure consistent
   alignment across devices (keeps desktop layout unchanged). */
@media (max-width: 768px) {
  .merge-layout,
  .conversion-preview-layout {
    justify-items: center; /* center grid items when single-column */
  }

  .conversion-module,
  .merge-preview-panel {
    justify-self: center;
    text-align: center; /* center internal text and elements */
    max-width: 720px;
    width: 100%;
    box-sizing: border-box;
  }

  .conversion-actions {
    justify-content: center; /* center buttons/tabs */
  }

  .merge-preview-head {
    justify-content: center;
    align-items: center;
    gap: 8px;
  }

  .merge-preview-meta {
    display: block;
    margin-top: 6px;
  }
}

.merge-preview-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 440px;
  overflow-y: auto;
  padding-right: 6px;
}

.merge-preview-empty {
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
}

.merge-preview-card {
  display: grid;
  grid-template-columns: 96px 1fr 64px;
  gap: 12px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 18px;
  padding: 12px;
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(6px);
}

@media (max-width: 640px) {
  .merge-preview-card {
    grid-template-columns: 80px 1fr;
    grid-template-rows: auto auto;
  }

  .merge-preview-actions {
    flex-direction: row;
    justify-content: flex-start;
  }
}

.merge-preview-thumb {
  position: relative;
  width: 96px;
  height: 128px;
  border-radius: 14px;
  border: 1px dashed rgba(148, 163, 184, 0.6);
  background: linear-gradient(145deg, rgba(226, 232, 240, 0.5), rgba(241, 245, 249, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.merge-preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 180ms ease;
}

.merge-preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

.merge-preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

.merge-preview-fallback {
  font-size: 11px;
  text-align: center;
  color: var(--muted);
  padding: 0 8px;
}

.merge-preview-index {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(15, 23, 42, 0.85);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 999px;
  letter-spacing: 0.4px;
}

.merge-preview-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.merge-preview-title {
  font-size: 14px;
  color: var(--text);
  word-break: break-word;
  margin: 0;
}

.merge-preview-detail {
  font-size: 12px;
  color: var(--muted);
}

.merge-preview-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}

.merge-preview-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(255, 255, 255, 0.95);
  color: var(--muted);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.merge-preview-btn:hover {
  border-color: var(--accent2);
  color: var(--accent2);
  transform: translateY(-1px);
}

.merge-preview-btn.danger {
  border-color: rgba(239, 68, 68, 0.5);
  color: #ef4444;
}

.merge-preview-btn.danger:hover {
  border-color: #ef4444;
  color: #ef4444;
}

.split-preview-panel {
  gap: 10px;
}

.split-preview-framewrap {
  margin-top: 18px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 18px;
  overflow: hidden;
  flex: 1;
  min-height: 340px;
  background: #fff;
}

.split-preview-framewrap .merge-preview-frame {
  min-height: 340px;
}

.split-preview-panel .merge-preview-empty {
  margin-top: 16px;
}

.image-to-pdf-preview-panel {
  gap: 18px;
}

.image-to-pdf-thumb-wrap {
  margin-top: 14px;
}

.image-to-pdf-thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 10px;
}

.image-to-pdf-thumb {
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 16px;
  padding: 6px;
  background: rgba(248, 250, 252, 0.9);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.image-to-pdf-thumb img {
  width: 100%;
  height: 78px;
  object-fit: cover;
  border-radius: 12px;
}

.image-to-pdf-thumb span {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  word-break: break-word;
}

.image-to-pdf-preview-framewrap {
  position: relative;
  margin-top: 18px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 18px;
  overflow: hidden;
  min-height: 340px;
  background: #fff;
}

.image-to-pdf-preview-framewrap .merge-preview-frame {
  min-height: 340px;
}

.image-to-pdf-preview-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  background: rgba(248, 250, 252, 0.92);
  border-radius: 18px;
}

.pdf-to-image-preview-panel {
  gap: 18px;
}

.pdf-to-image-preview-layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.pdf-to-image-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  margin-bottom: 8px;
}

.pdf-to-image-framebox {
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
  min-height: 340px;
}

.pdf-to-image-framebox .merge-preview-frame {
  min-height: 340px;
}

.pdf-to-image-thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  min-height: 150px;
}

.pdf-to-image-thumb {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  padding: 8px;
  background: rgba(248, 250, 252, 0.9);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pdf-to-image-thumb img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 10px;
}

.pdf-to-image-thumb span {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
}

.pdf-to-image-preview-placeholder {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  display: none;
}

.pdf-to-image-preview-panel .merge-preview-empty {
  margin-top: 16px;
}

.sign-preview-panel {
  gap: 18px;
}

.sign-preview-framegrid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  flex: 1;
}

.sign-preview-framewrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sign-preview-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
}

.sign-preview-framebox {
  position: relative;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
  min-height: 340px;
}

.sign-preview-framebox .merge-preview-frame {
  min-height: 340px;
}

.sign-preview-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 18px;
  font-size: 13px;
  color: var(--muted);
  background: rgba(248, 250, 252, 0.9);
  border: 1px dashed rgba(148, 163, 184, 0.65);
  border-radius: 18px;
}

.sign-preview-panel .merge-preview-empty {
  margin-top: 16px;
}

/* Mobile fix: prevent sign preview stretching/cropping on narrow screens */
@media (max-width: 768px) {
  /* Stack preview and module in a single column like Compress Lab */
  .sign-preview-framegrid {
    grid-template-columns: 1fr;
    grid-auto-rows: min-content;
    gap: 12px;
  }

  .sign-preview-framewrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center; /* center previews like Compress Lab */
  }

  .sign-preview-framebox {
    /* smaller default on phones and capped to viewport fraction */
    min-height: 140px;
    max-height: 45vh;
    overflow: auto; /* scroll inside rather than stretch page */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
  }

  .sign-preview-framebox .merge-preview-frame {
    width: 100%;
    height: 100%;
    min-height: 120px;
    max-height: 44vh;
    border: none;
    background: #fff;
  }

  /* Compact preview: scales internal iframe content to fit cleanly inside the box
     on narrow viewports. Uses transform+larger element size so scaled content is
     not cropped and remains centered like Compress Lab. */
  .sign-preview-framebox.compact {
    --preview-scale: 0.78;
  }

  .sign-preview-framebox.compact .merge-preview-frame {
    transform: scale(var(--preview-scale));
    transform-origin: top center;
    width: calc(100% / var(--preview-scale));
    height: calc(100% / var(--preview-scale));
    max-height: 44vh;
    border: none;
    background: #fff;
  }

  .sign-preview-panel {
    gap: 12px;
  }

  .sign-preview-placeholder {
    padding: 12px;
  }

  /* Mobile guard for PDF previews */
  .mobile-pdf-guard {
    width: 100%;
    overflow: hidden;
    position: relative;
  }

  /* Nudge Sign PDF module slightly left on narrow phones so the tab fits cleanly */
  @media (max-width: 420px) {
    #pageSignPdf .conversion-module,
    #pageSignPdf .merge-preview-panel {
      margin-left: -14px; /* increased left shift so tab fits on narrow phones */
      margin-right: -8px;
      padding-left: 12px; /* keep internal padding comfortable after shifting */
      box-sizing: border-box;
    }
  }

  /* Mobile-only Sign PDF layout (mirrors Merge PDFs mobile layout semantics) */
  @media (max-width: 768px) {
    /* Use single-column, centered layout like Merge PDFs */
    #pageSignPdf .conversion-grid {
      grid-template-columns: 1fr;
      justify-items: center;
      gap: 12px;
    }

    /* Center and constrain the module & preview panel for narrow viewports */
    #pageSignPdf .conversion-module,
    #pageSignPdf .merge-preview-panel {
      width: 100%;
      max-width: 720px;
      box-sizing: border-box;
      margin: 0 auto;
      text-align: center;
      padding: 16px;
      border-radius: 18px;
      background: rgba(255,255,255,0.95);
    }

    /* Make action buttons centered like Merge layout */
    #pageSignPdf .conversion-actions {
      justify-content: center;
    }

    /* Constrain preview framebox similar to Merge previews */
    #pageSignPdf .sign-preview-framebox {
      min-height: 200px;
      max-height: 56vh;
      overflow: auto;
      padding: 10px;
    }

    #pageSignPdf .sign-preview-framewrap {
      align-items: center;
    }

    /* Align the preview head and meta like Merge PDFs */
    #pageSignPdf .merge-preview-head {
      justify-content: center;
      align-items: center;
      gap: 8px;
    }

    #pageSignPdf .merge-preview-meta {
      display: block;
      margin-top: 6px;
    }

    /* Enforce mobile width cap so no element exceeds 360px on mobile */
    .mobile-pdf-guard,
    .mobile-pdf-guard iframe,
    .mobile-pdf-guard canvas,
    .mobile-pdf-guard img,
    #pageSignPdf .conversion-module,
    #pageSignPdf .merge-preview-panel {
      max-width: 360px;
      margin-left: auto;
      margin-right: auto;
    }

    .mobile-pdf-guard iframe,
    .mobile-pdf-guard canvas,
    .mobile-pdf-guard img {
      width: 100%;
      max-width: 360px;
      height: auto;
      display: block;
    }

    /* Make the Enhance page match the Resize page behavior on small screens:
       - single-column, constrained panels, consistent paddings and borders
       - keep desktop untouched */
    #page3 .enhance-grid {
      grid-template-columns: 1fr;
      justify-items: center; /* center the panels like Resize mobile */
    }

    #page3 .enhance-module,
    #page3 .enhance-preview-pane {
      width: 100%;
      max-width: 720px;
      box-sizing: border-box;
      margin: 0 auto;
      padding: 18px;
      border-radius: 18px;
      background: rgba(248, 250, 252, 0.95);
      border: 1px solid rgba(148, 163, 184, 0.35);
      text-align: left; /* keep labels left-aligned like Resize */
    }

    /* Remove the left accent bar on the enhance metadata and center the meta text */
    #page3 .enhance-meta {
      border-left: none;
      padding-left: 0;
      margin-top: 10px;
      text-align: left;
    }

    /* Make preview cards stack like the Resize preview on phones (Original above Enhanced) */
    #page3 .enhance-preview-grid {
      grid-template-columns: 1fr; /* stack vertically */
      gap: 12px;
    }

    #page3 .enhance-preview-grid .preview-card {
      width: 100%;
      min-height: 160px;
      padding: 12px;
    }
  }
}

.conversion-module {
  padding: 20px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.35);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.conversion-module h3 {
  margin: 0;
  color: var(--text);
}

.conversion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.conversion-note {
  color: var(--muted-2);
  font-size: 12px;
}

.conversion-hint {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.status.mini {
  font-size: 12px;
  margin-top: 0;
  padding: 10px 12px;
  border-left-width: 2px;
}

.conversion-module input[type='text'],
.conversion-module input[type='number'] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(248, 250, 252, 0.95);
  color: var(--text);
  font-size: 14px;
}

.conversion-module select,
.conversion-select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(248, 250, 252, 0.95);
  color: var(--text);
  font-size: 14px;
}

.toolkit-cta {
  margin-top: 20px;
}

.toolkit-cta-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.toolkit-card {
  margin-top: 20px;
}

.toolkit-split {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
}

@media (max-width: 1100px) {
  .toolkit-split {
    grid-template-columns: 1fr;
  }
}

.toolkit-exam-column,
.toolkit-doc-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.toolkit-exam-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toolkit-exam-card {
  padding: 14px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  transition: border-color 160ms ease, transform 160ms ease;
}

.toolkit-exam-card:hover {
  border-color: rgba(37, 99, 235, 0.5);
  transform: translateY(-2px);
}

.toolkit-exam-card.active {
  border-color: var(--accent1);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.18);
}

.toolkit-doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.toolkit-doc-card {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.94);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toolkit-doc-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.toolkit-doc-preview {
  width: 100%;
  height: 140px;
  border-radius: 10px;
  object-fit: contain;
  background: rgba(226, 232, 240, 0.5);
  border: 1px dashed rgba(148, 163, 184, 0.4);
}

.toolkit-doc-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--muted);
  margin-right: 6px;
  margin-top: 4px;
}

.toolkit-status {
  font-size: 12px;
  color: var(--muted);
  min-height: 20px;
}

.toolkit-placeholder {
  color: var(--muted);
  font-size: 14px;
}

.enhance-card,
.compress-card {
  margin-top: 12px;
}

.enhance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 1100px) {
  .enhance-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile-only: remove border for the "Dial in the boost" module (second enhance module).
   This ensures phones show a cleaner, borderless control area while leaving desktop unchanged. */
@media (max-width: 768px) {
  #page3 .enhance-module:nth-of-type(2) {
    border: none;
    text-align: center; /* center headings and content inside module on mobile */
  }

  /* Center enhance controls and labels within the boost module on mobile */
  #page3 .enhance-module:nth-of-type(2) .enhance-control {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  /* Make the label and control values center-aligned and stacked */
  #page3 .enhance-module:nth-of-type(2) .enhance-control label {
    display: block;
    justify-content: center;
    width: 100%;
  }

  #page3 .enhance-module:nth-of-type(2) .enhance-control input[type="range"] {
    width: 92%;
    max-width: 300px;
  }

  #page3 .enhance-module:nth-of-type(2) .enhance-control .enhance-control-value {
    margin-top: 6px;
  }
}

.enhance-module h3 {
  margin-top: 0;
  margin-bottom: 6px;
  font-size: 18px;
  color: var(--text);
}

.enhance-meta {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  border-left: 3px solid rgba(37, 99, 235, 0.35);
  padding-left: 10px;
}

.enhance-preview-pane {
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 16px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.enhance-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.preview-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 12px;
  padding: 12px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
}

.preview-label {
  font-size: 12px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 6px;
}

.preview-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
  background: rgba(226, 232, 240, 0.6);
  min-height: 160px;
}

.resize-preview-pane {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.resize-compare-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.resize-compare-note {
  color: var(--muted);
  margin-top: 4px;
  font-size: 14px;
}

.resize-file-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.resize-nav-btn {
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: transparent;
  color: var(--muted-2);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 16px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.resize-nav-btn:enabled:hover,
.resize-nav-btn:focus-visible {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.4);
  color: var(--accent1);
}

.resize-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.resize-compare-meta {
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.3px;
  display: none;
}

.resize-file-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.resize-file-hint {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.resize-stats {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.resize-stats li {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(15, 23, 42, 0.03);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.resize-stats span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
}

.resize-stats strong {
  font-size: 14px;
  color: var(--text);
  word-break: break-word;
}

.resize-compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.resize-preview-pane .preview-card {
  min-height: 220px;
}

.resize-preview-pane .preview-card img {
  min-height: 180px;
}


.enhance-control {
  margin-top: 12px;
}

.enhance-control label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  margin-bottom: 6px;
}

.enhance-control-value,
.compress-quality-value {
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.3px;
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toggle-control.compact {
  align-items: center;
}

.sign-label,
.sign-grid label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  font-weight: 600;
}

.sign-grid {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.toggle-meta {
  flex: 1;
}

.toggle-meta small {
  display: block;
  font-size: 11px;
  letter-spacing: 0.3px;
  color: var(--muted-2);
  margin-top: 4px;
}

.switch {
  position: relative;
  display: inline-flex;
  width: 46px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.5);
  transition: background 160ms ease;
}

.switch-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  top: 3px;
  left: 4px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.15);
  transition: transform 160ms ease;
}

.switch input:checked + .switch-slider {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
}

.switch input:checked + .switch-slider::before {
  transform: translateX(18px);
  background: #eff6ff;
}

.compress-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 280px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

@media (max-width: 1100px) {
  .compress-grid {
    grid-template-columns: 1fr;
  }
}

.compress-column,
.compress-preview-pane {
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3);
  padding: 20px 22px;
}

.compress-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.actions.stack {
  flex-direction: column;
}

.compress-stats {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compress-stats li {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
  padding-bottom: 6px;
}

.compress-stats strong {
  color: var(--text);
  font-size: 15px;
}

.compress-hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 12px;
}

.compress-meta {
  font-size: 13px;
  color: var(--muted);
  border-left: 3px solid rgba(37, 99, 235, 0.35);
  padding-left: 10px;
}

.dropzone {
  position: relative;
  border-radius: 22px;
  padding: 48px 32px;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(232, 240, 255, 0.96));
  border: 2px dashed rgba(37, 99, 235, 0.35);
  cursor: pointer;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.dropzone.mini {
  min-height: 240px;
  padding: 36px 24px;
}

.dropzone:hover {
  border-color: rgba(37, 99, 235, 0.65);
  background: rgba(232, 240, 255, 0.96);
  transform: translateY(-2px);
}

.dropzone.dragover {
  border-color: var(--accent1);
  background: rgba(219, 234, 254, 0.85);
  box-shadow: 0 0 50px rgba(37, 99, 235, 0.15);
  transform: translateY(-4px);
}

#dropzone {
  border: 1px solid rgba(148, 163, 184, 0.25);
}

#dropzone:hover {
  border-color: rgba(37, 99, 235, 0.35);
}

.dropzone .cloud-icon svg {
  width: 96px;
  height: 64px;
}

.dropzone input[type='file'] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.dz-content {
  text-align: center;
  color: var(--muted);
  z-index: 2;
}

.dz-content strong {
  display: block;
  color: var(--text);
  font-size: 18px;
  margin-bottom: 6px;
}

.cloud-icon {
  position: absolute;
  z-index: 1;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(59, 130, 246, 0.25);
  transition: color 160ms ease, transform 160ms ease;
}

.dropzone.dragover .cloud-icon {
  color: rgba(37, 99, 235, 0.95);
  transform: translateY(-6px);
}

.controls label {
  display: block;
  color: var(--muted);
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.9;
}

.controls input,
.controls select,
.dim-row select,
#exportFormat {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1.5px solid rgba(148, 163, 184, 0.5);
  background: rgba(248, 250, 252, 0.95);
  color: var(--text);
  font-size: 14px;
  transition: all 140ms ease;
}

.controls select.full-select,
#exportFormat,
.dim-row select {
  -webkit-appearance: none;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 30px;
}

.controls input:focus,
.controls select:focus,
.dim-row select:focus,
#exportFormat:focus {
  outline: none;
  border-color: rgba(37, 99, 235, 0.65);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.preset-hint {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--muted-2);
  letter-spacing: 0.3px;
}

.dim-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.color-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
}

.color-preview-label {
  font-size: 13px;
  letter-spacing: 0.5px;
  color: var(--muted);
  font-weight: 600;
}

.progress-container {
  margin-top: 14px;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(226, 232, 240, 0.8);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  transition: width 280ms cubic-bezier(0.4, 0, 0.2, 1);
}

.thumb-actions {
  margin-top: 6px;
  display: flex;
  gap: 4px;
  font-size: 11px;
}

.thumb-download-btn,
.thumb-quality-btn {
  flex: 1;
  padding: 4px 6px;
  background: rgba(248, 250, 252, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.4);
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font-size: 11px;
  transition: all 120ms;
}

.thumb-download-btn {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.35);
  color: var(--action);
}

.thumb-download-btn:hover {
  background: rgba(16, 185, 129, 0.25);
  color: #065f46;
}

.thumb-quality-btn {
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.3);
  color: var(--accent1);
}

.thumb-quality-btn:hover {
  background: rgba(37, 99, 235, 0.18);
  color: #0f172a;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
  border: none;
  font-size: 15px;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent1), var(--accent2));
  color: #f8fafc;
  box-shadow: 0 15px 35px rgba(37, 99, 235, 0.25);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.btn.primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 50px rgba(37, 99, 235, 0.3);
}

.btn.outline {
  background: transparent;
  color: var(--accent1);
  border: 1.5px solid var(--outline);
}

.btn.outline:hover {
  background: rgba(226, 239, 255, 0.6);
  border-color: rgba(37, 99, 235, 0.4);
  color: var(--accent1);
}

.btn.ghost:hover {
  border-color: var(--accent1);
  color: var(--accent1);
}

.btn.ghost {
  background: transparent;
  border: 1.5px solid rgba(148, 163, 184, 0.6);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 10px 14px;
}

.btn.download-action {
  background: linear-gradient(120deg, var(--action), #059669);
  color: #f0fdf4;
  border: 1px solid rgba(16, 185, 129, 0.35);
  box-shadow: 0 15px 35px rgba(16, 185, 129, 0.25);
}

.btn.download-action:hover {
  box-shadow: 0 25px 55px rgba(16, 185, 129, 0.35);
}

.btn.download-action:disabled {
  background: #d1fae5;
  color: rgba(15, 23, 42, 0.45);
  border-color: rgba(16, 185, 129, 0.2);
  box-shadow: none;
  cursor: not-allowed;
}

#selectFilesBtn {
  font-size: 20px;
  padding: 22px 44px;
  border-radius: 22px;
  min-width: 320px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  letter-spacing: 0.3px;
  box-shadow: 0 34px 70px rgba(37, 99, 235, 0.4);
}

#selectFilesBtn:hover {
  transform: translateY(-8px);
  box-shadow: 0 48px 90px rgba(37, 99, 235, 0.45);
}

@media (max-width: 640px) {
  #selectFilesBtn {
    width: 100%;
    min-width: 0;
    font-size: 18px;
    padding: 20px;
  }
}

.preview {
  padding: 16px;
  min-height: 200px;
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.before-after-panel {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 18px;
  background: rgba(248, 250, 252, 0.98);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.before-after-panel.active {
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: 0 22px 55px rgba(15, 23, 42, 0.12);
}

.before-after-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.before-after-head .lead {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.before-after-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.before-after-panel .preview-card {
  min-height: 260px;
}

.before-after-panel .preview-card img {
  min-height: 220px;
  background: rgba(226, 232, 240, 0.65);
}

.before-after-panel .status {
  margin-top: 0;
}

@media (max-width: 640px) {
  .before-after-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .before-after-panel .btn {
    width: 100%;
  }
}

.thumbs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.thumb-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 120px;
  position: relative;
  cursor: pointer;
}

.thumb-wrap:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.6);
  outline-offset: 4px;
  border-radius: 12px;
}

.thumb-wrap.thumb-selected .thumb {
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.25);
  transform: translateY(-2px);
}

.thumb-wrap.thumb-selected .thumb-meta {
  color: var(--accent1);
}

.thumb {
  width: 110px;
  height: 72px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.15);
  border: 1px solid rgba(148, 163, 184, 0.4);
  transition: all 200ms ease;
}

.thumb-meta {
  margin-top: 8px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thumb-wrap::after {
  content: 'Applied';
  position: absolute;
  top: 0;
  right: 0;
  transform: translate(40%, -40%);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent1);
  border: 1px solid rgba(37, 99, 235, 0.35);
  opacity: 0;
  transition: opacity 160ms ease, transform 160ms ease;
}

.thumb-wrap[data-applied='true']::after {
  opacity: 1;
  transform: translate(30%, -30%);
}

.thumb-hints {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 20px;
}

.quality-hint {
  font-size: 11px;
  border-radius: 999px;
  padding: 3px 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  letter-spacing: 0.2px;
}

.quality-hint.warn {
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid rgba(251, 191, 36, 0.6);
  color: #fbbf24;
}

.quality-hint.error {
  background: rgba(248, 113, 113, 0.18);
  border: 1px solid rgba(248, 113, 113, 0.8);
  color: #f87171;
}

.quality-hint.ok {
  background: rgba(52, 211, 153, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.7);
  color: #34d399;
}

.quality-hint.info {
  background: rgba(191, 219, 254, 0.12);
  border: 1px solid rgba(191, 219, 254, 0.4);
  color: #bfdbfe;
}

.status {
  margin-top: 14px;
  padding: 14px 16px;
  background: rgba(226, 239, 255, 0.72);
  border-radius: 12px;
  color: var(--muted);
  border-left: 3px solid var(--accent1);
  font-size: 14px;
}

.status.success {
  border-left-color: var(--action);
  color: #047857;
}

.status.error {
  border-left-color: #ef4444;
  color: #b91c1c;
}

.footer {
  color: var(--muted);
  text-align: center;
  margin-top: 18px;
}

body.high-contrast {
  background: #f4f4f4;
  color: #0b0b0b;
}

body.high-contrast .card,
body.high-contrast .dropzone,
body.high-contrast .preview,
body.high-contrast .enhance-module,
body.high-contrast .compress-column,
body.high-contrast .compress-preview-pane,
body.high-contrast .conversion-module {
  background: #ffffff !important;
  color: #0b0b0b;
  border-color: #0b0b0b !important;
}

.quality-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1100;
  font-family: inherit;
}

.quality-modal[aria-hidden='false'] {
  display: block;
}

.quality-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 15, 0.65);
  backdrop-filter: blur(6px);
}

.quality-panel {
  position: relative;
  max-width: 400px;
  margin: 40% auto;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.45);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.25);
  padding: 20px;
  border-radius: 12px;
  z-index: 5;
}

.quality-panel h4 {
  margin: 0 0 12px 0;
  color: var(--text);
  font-weight: 600;
}

#selectFilesBtn,
#addMoreFilesBtn {
  position: relative;
  z-index: 10;
  pointer-events: auto;
}

.shortcut-hint {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.4px;
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.7);
  outline-offset: 3px;
}

.thumb-download-btn:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.8);
  outline-offset: 2px;
}
body.high-contrast .site-nav,
body.high-contrast .quick-card,
body.high-contrast .hero,
body.high-contrast .status {
  background: #ffffff;
  color: #0b0b0b;
  border-color: #0b0b0b;
}

.dropzone.dropzone-armed {
  border-color: rgba(59, 130, 246, 0.8);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15), 0 15px 35px rgba(15, 23, 42, 0.2);
}

.status.notice {
  margin-top: 12px;
  background: rgba(59, 130, 246, 0.08);
  color: #2563eb;
  border-color: rgba(59, 130, 246, 0.25);
}

.status.notice.error {
  background: rgba(239, 68, 68, 0.08);
  color: #dc2626;
  border-color: rgba(239, 68, 68, 0.25);
}

.status.notice.success {
  background: rgba(16, 185, 129, 0.08);
  color: #059669;
  border-color: rgba(16, 185, 129, 0.25);
}

.compare-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1200;
  font-family: inherit;
}

.compare-modal[aria-hidden='false'] {
  display: block;
}

.compare-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 15, 0.65);
  backdrop-filter: blur(6px);
}

.compare-panel {
  position: relative;
  max-width: 1100px;
  margin: 40px auto;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.45);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.25);
  padding: 20px;
  border-radius: 12px;
  z-index: 5;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 900px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }
}

.compare-col {
  background: rgba(248, 250, 252, 0.95);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  min-height: 240px;
}

.compare-col img {
  display: block;
  max-width: 100%;
  max-height: 60vh;
  width: auto;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.35);
}

.compare-stage {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(226, 232, 240, 0.8);
  min-height: 240px;
}

.compare-stage img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 70vh;
  object-fit: contain;
}

.after-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  width: 50%;
  transition: width 120ms linear;
}

.wipe-handle {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  height: 100%;
  width: 28px;
  z-index: 3;
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
}

.wipe-bar {
  width: 2px;
  height: 72%;
  background: linear-gradient(180deg, #1d4ed8, #3b82f6);
  opacity: 0.9;
  border-radius: 1px;
}

.wipe-knob {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.25);
  margin-left: 6px;
}

.page {
  animation: fadeIn 300ms ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}