@charset "UTF-8";

@layer tokens, base, layout, components, utilities;

@font-face{font-family:'Inter';font-style:normal;font-weight:400 700;font-display:swap;
  src:url('/assets/font/inter-vi.woff2') format('woff2');
  unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:'Inter';font-style:normal;font-weight:400 700;font-display:swap;
  src:url('/assets/font/inter-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter Fallback';src:local('Roboto');size-adjust:107.2%;ascent-override:96.9%;descent-override:24.1%;line-gap-override:0%}
@font-face{font-family:'Inter Fallback';src:local('Segoe UI');size-adjust:110.1%;ascent-override:96.9%;descent-override:24.1%;line-gap-override:0%}
@font-face{font-family:'Inter Fallback';src:local('Arial');size-adjust:104.7%;ascent-override:96.9%;descent-override:24.1%;line-gap-override:0%}

@layer tokens {
  :root {
    --bg:            #000000;
    --surface-1:     #1C1C1E;
    --surface-2:     #2C2C2E;
    --surface-3:     #3A3A3C;
    --surface-4:     #48484A;

    --nav:           #000000;
    --elevated:      #2C2C2E;
    --float:         #3A3A3C;
    --field:         #2C2C2E;

    --separator:     transparent;
    --field-edge:    transparent;

    --text-1:        #FFFFFF;
    --text-2:        #AEAEB2;
    --text-3:        #8E8E93;

    --accent:        #3399FF;
    --accent-hover:  #66B2FF;
    --accent-soft:   #18314B;
    --accent-ink:    #3D9EFF;
    --accent-solid:  #0063C7;
    --on-accent:     #FFFFFF;
    --danger:        #FF453A;
    --focus:         #3399FF;
    --overlay:       #000000CC;

    --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', 'Inter Fallback', Arial, sans-serif;
    --fs-3xl: 2.5rem;
    --fs-2xl: 1.875rem;
    --fs-xl:  1.5rem;
    --fs-lg:  1.25rem;
    --fs-md:  1.125rem;
    --fs-base:1rem;
    --fs-sm:  0.875rem;
    --fs-xs:  0.75rem;
    --lh-tight: 1.15;
    --lh-head:  1.3;
    --lh-body:  1.6;

    --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px; --s-5: 20px;
    --s-6: 24px; --s-8: 32px; --s-10: 40px; --s-12: 48px; --s-16: 64px; --s-20: 80px;

    --r-sm:     10px;
    --r-md:     13px;
    --r-lg:     18px;
    --r-pill:   999px;
    --r-nested: calc(var(--r-lg) - var(--s-2));

    --t-fast: 120ms; --t-base: 200ms; --ease: cubic-bezier(.2, 0, 0, 1);

    --wrap: 880px;
    color-scheme: dark;

  }

  html.light {
    --bg:            #F2F2F7;
    --surface-1:     #FFFFFF;
    --surface-2:     #F2F2F7;
    --surface-3:     #E5E5EA;
    --surface-4:     #D1D1D6;

    --nav:           #F2F2F7;
    --elevated:      #FFFFFF;
    --float:         #E5E5EA;
    --field:         #E5E5EA;

    --separator:     transparent;
    --field-edge:    transparent;

    --text-1:        #000000;
    --text-2:        #636366;
    --text-3:        #6E6E72;

    --accent:        #0066D6;
    --accent-hover:  #004EA3;
    --accent-soft:   #CCE4FF;
    --accent-ink:    #005BBF;
    --accent-solid:  #0062CC;
    --on-accent:     #FFFFFF;
    --danger:        #B80A00;
    --focus:         #0066D6;
    --overlay:       #00000080;
    color-scheme: light;
  }
}

@layer base {
  *, *::before, *::after { box-sizing: border-box; }
  html { font-size: 16px; -webkit-text-size-adjust: 100%; }
  body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text-1);
    overflow-x: hidden;
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: var(--lh-body);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
  main { flex: 1 0 auto; }
  img, svg, video { max-width: 100%; }
  img, video { height: auto; }
  svg { display: block; }
  h1, h2, h3, h4 { margin: 0; line-height: var(--lh-head); font-weight: 700; letter-spacing: -0.015em; text-wrap: balance; }
  h1 { font-size: var(--fs-3xl); line-height: var(--lh-tight); }
  h2 { font-size: var(--fs-2xl); }
  h3 { font-size: var(--fs-xl); }
  p  { margin: 0; text-wrap: pretty; }
  a  { color: var(--accent); text-decoration: none; }
  a:hover { color: var(--accent-hover); }
  button { font: inherit; color: inherit; }
  hr { border: 0; block-size: 1px; background: var(--separator); margin-block: var(--s-6); margin-inline: 0; }

  :focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
  :focus:not(:focus-visible) { outline: none; }
  a[href], button, input, select, textarea, summary, [tabindex]:not([tabindex="-1"]) {
    scroll-margin-block-start: calc(64px + var(--s-3));
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important;
      transition-duration: .01ms !important; scroll-behavior: auto !important; }
  }
  html { scroll-behavior: smooth; }
  .no-scroll { overflow: hidden; }
  .hidden { display: none !important; }
  .darkmode-input.hidden { display: block !important; }
}

@layer layout {
  .container { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: var(--s-4); }
  main > section { padding-inline: var(--s-4); }
  #jumbotron, #how-to-use, #features, #faq { max-width: var(--wrap); margin-inline: auto; }
}

@layer components {

  .main-nav {
    position: sticky; top: 0; z-index: 100;
    background: var(--nav);
  }
  .main-nav .nav-wrapper {
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--s-4); block-size: 64px; max-width: 1180px; margin-inline: auto;
  }
  .logo-icon, .logo-text { inline-size: auto; }
  .logo-text { display: none; }
  .main-nav a.logo { color: var(--text-1); display: inline-flex; }
  .st-lockup { display: inline-flex; align-items: center; gap: var(--s-2); }
  .st-lockup-nav .st-word { font-size: var(--fs-lg); font-weight: 700; letter-spacing: -.02em; }
  .nav-collapse { display: flex; align-items: center; gap: var(--s-2); }
  .nav-right-mobile { display: flex; align-items: center; gap: var(--s-2); }

  .language-dropdown-btn, button.menu-toggle, .dark-mode .toggle-switch {
    display: inline-flex; align-items: center; justify-content: center;
    inline-size: 40px; block-size: 40px; padding: 0;
    background: var(--surface-3); color: var(--text-2);
    border: 0; border-radius: var(--r-pill); cursor: pointer;
    transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
  }
  .language-dropdown-btn:hover, button.menu-toggle:hover,
  .dark-mode .toggle-switch:hover { background: var(--surface-4); color: var(--text-1); }
  .language-dropdown-btn:active, button.menu-toggle:active,
  .dark-mode .toggle-switch:active { scale: .94; }
  .language-dropdown-btn svg, button.menu-toggle svg, .toggle-icon svg { inline-size: 20px; block-size: 20px; }

  .language-selector { position: relative; }
  .language-active { display: none; }
  .language-selector .dropdown-menu {
    display: none; position: absolute; inset-block-start: calc(100% + var(--s-3)); inset-inline-end: 0;
    inline-size: max-content; min-inline-size: 200px; max-block-size: min(60vh, 26rem); overflow-y: auto;
    background: var(--float); border: 0; border-radius: var(--r-lg);
    padding: var(--s-2); z-index: 200;
  }
  .language-selector .dropdown-menu.show { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
  .dropdown-item {
    display: block; padding: var(--s-2) var(--s-3); border-radius: var(--r-nested);
    color: var(--text-2); font-size: var(--fs-sm); text-align: start; white-space: nowrap;
  }
  .dropdown-item:hover { background: var(--surface-4); color: var(--text-1); }
  .dropdown-item.active { background: var(--accent-solid); color: var(--on-accent); font-weight: 600; }

  .menu-nav { position: relative; display: none; }
  .dropdown-menu-nav {
    display: none; position: absolute; inset-block-start: calc(100% + var(--s-3)); inset-inline-end: 0;
    background: var(--float); border: 0; border-radius: var(--r-lg);
    padding: var(--s-2); min-inline-size: 180px; list-style: none; margin: 0; z-index: 200;
  }
  .dropdown-menu-nav.show { display: block; }
  @media (min-width: 900px) {
    .menu-nav > svg { display: none; }
    .menu-nav .dropdown-menu-nav {
      display: flex; position: static; inline-size: auto; min-inline-size: 0;
      background: none; border: 0; padding: 0; gap: var(--s-1);
    }
    .menu-nav .menu-link { padding: var(--s-2) var(--s-3); border-radius: var(--r-pill);
      font-size: var(--fs-sm); white-space: nowrap; }
  }
  .menu-item { list-style: none; }
  .menu-link { display: block; padding: var(--s-2) var(--s-3); border-radius: var(--r-sm); color: var(--text-2); }
  .menu-link:hover { background: var(--surface-4); color: var(--text-1); }
  .menu-link.active { background: var(--accent-soft); color: var(--text-1); font-weight: 700; }
  .nav-collapse { display: none; }
  .nav-right-mobile { display: flex; }
  @media (min-width: 768px) {
    .nav-collapse { display: flex; }
    .nav-right-mobile { display: none; }
    .menu-nav { display: flex; }
  }

  .dark-mode .toggle-switch { position: relative; }
  .darkmode-input { position: absolute; opacity: 0; inline-size: 1px; block-size: 1px;
    margin: 0; padding: 0; pointer-events: none; }
  .dark-mode .toggle-switch:has(.darkmode-input:focus-visible) {
    outline: 2px solid var(--focus); outline-offset: 2px; }
  .toggle { display: none; }
  html.dark .toggle-dark, html.light .toggle-light {
    display: inline-flex; align-items: center; justify-content: center; }
  .dark-mode .toggle-icon { display: inline-flex; align-items: center; justify-content: center; }

  #jumbotron { padding-block: var(--s-16) var(--s-12); text-align: center; }
  #jumbotron .header { display: grid; gap: var(--s-4); justify-items: center; }
  #jumbotron h1.title { max-inline-size: 16ch; }
  .feature-description { color: var(--text-2); font-size: var(--fs-md); max-inline-size: 46ch; }

  .form-wrapper { inline-size: 100%; display: grid; gap: var(--s-3); margin-block-start: var(--s-4); }
  @media (min-width: 640px) {
    .form-wrapper:not(:has(.cf-turnstile)) { grid-template-columns: 1fr auto; align-items: center; }
    .form-wrapper:not(:has(.cf-turnstile)) #loadVideos {
      inline-size: auto; block-size: 60px; padding-inline: var(--s-8); }
  }
  .form-floating { position: relative; display: flex; align-items: center; }
  #postUrl {
    inline-size: 100%; block-size: 60px;
    padding-inline: var(--s-5) 56px; padding-block: 0;
    background: var(--field); color: var(--text-1);
    border: 0; border-radius: var(--r-md);
    outline: 2px solid var(--field-edge); outline-offset: -2px;
    font-family: inherit; font-size: var(--fs-base);
    transition: background var(--t-fast) var(--ease);
  }
  #postUrl::placeholder { color: var(--text-2); opacity: 1; }

  .paste-button, .clear-button {
    position: absolute; inset-inline-end: var(--s-2); inset-block-start: 50%; translate: 0 -50%;
    inline-size: 44px; block-size: 44px;
    display: inline-flex; align-items: center; justify-content: center;
    background: transparent; color: var(--text-2);
    border: 0; border-radius: var(--r-pill); cursor: pointer;
    transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
  }
  .paste-button:hover, .clear-button:hover { background: var(--surface-4); color: var(--text-1); }
  .paste-button:active, .clear-button:active { scale: .94; }
  .paste-button svg, .clear-button svg { inline-size: 20px; block-size: 20px; }
  .paste-button span, .clear-button span { display: none; }
  .paste-button.is-busy { opacity: .5; }

  .button-wrapper { display: grid; }
  #loadVideos {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
    block-size: 56px; inline-size: 100%;
    background: var(--accent-solid); color: var(--on-accent);
    border: 0; border-radius: var(--r-md);
    font-size: 1.1875rem; font-weight: 700; cursor: pointer;
    transition: background var(--t-fast) var(--ease), scale var(--t-fast) var(--ease);
  }
  #loadVideos:hover:not(:disabled) { background: color-mix(in srgb, var(--accent-solid) 88%, white); }
  #loadVideos:active:not(:disabled) { scale: .99; }
  #loadVideos:disabled { opacity: .6; cursor: not-allowed; }
  .button-label { display: inline-flex; align-items: center; gap: var(--s-2); }
  .button-label svg { inline-size: 20px; block-size: 20px; }
  .spinner-icon { animation: st-spin 1s linear infinite; }
  .spinner-icon .spinner-arc { transform-origin: 12px 12px; }
  @keyframes st-spin { to { rotate: 360deg; } }

  #mediaList { display: grid; }
  .media-loaded { margin-block-start: var(--s-8); display: grid; gap: var(--s-4); text-align: start; }
  .media-info { display: grid; gap: var(--s-2);
    background: var(--surface-1); padding: var(--s-5); border-radius: var(--r-lg); }
  .user-info { display: flex; align-items: center; gap: var(--s-3); }
  .user-avatar img { display: block; inline-size: 40px; block-size: 40px;
    border-radius: var(--r-pill); object-fit: cover; }
  .user-name { font-weight: 600; }
  .meta-title { font-weight: 600; }
  .meta-description { color: var(--text-2); font-size: var(--fs-sm);
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

  .media-items { display: grid; gap: var(--s-4); grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .media-card { background: var(--surface-1); border: 0; border-radius: var(--r-lg); overflow: hidden; }
  .media-header { padding: var(--s-4) var(--s-4) var(--s-3); }
  .media-title { font-size: var(--fs-sm); color: var(--text-3); }
  .thumbnail-container { padding: 0; }
  .thumbnail-container img, .thumbnail-container video {
    inline-size: 100%; aspect-ratio: 4 / 5; max-block-size: 340px; object-fit: cover;
    border-radius: 0; background: var(--surface-2); display: block;
  }
  .media-body { padding: var(--s-4); }
  .download-options { display: grid; gap: var(--s-2); }
  .download-button {
    inline-size: 100%; block-size: 44px;
    display: inline-flex; align-items: center; justify-content: center; gap: var(--s-1);
    background: var(--accent-solid); color: var(--on-accent);
    border: 0; border-radius: var(--r-md); font-weight: 600; font-size: var(--fs-sm); cursor: pointer;
    transition: background var(--t-fast) var(--ease), scale var(--t-fast) var(--ease);
  }
  .download-button:hover { background: color-mix(in srgb, var(--accent-solid) 88%, white); }
  .download-button:active { scale: .99; }
  .option-info { display: flex; align-items: center; gap: var(--s-2); color: var(--text-3); font-size: var(--fs-xs); }
  .resolution-badge { padding: 2px var(--s-2); border: 0; border-radius: var(--r-pill);
    background: var(--surface-3); color: var(--text-2); }
  .btn.download-another {
    justify-self: center; margin-block-start: var(--s-5);
    display: inline-flex; align-items: center; gap: var(--s-2);
    padding: var(--s-3) var(--s-5);
    background: var(--surface-3); color: var(--text-1);
    border: 0; border-radius: var(--r-pill); cursor: pointer;
    transition: background var(--t-fast) var(--ease), scale var(--t-fast) var(--ease);
  }
  .btn.download-another:hover { background: var(--surface-4); color: var(--text-1); }
  .btn.download-another:active { scale: .98; }

  #how-to-use, #features, #faq { padding-block: var(--s-16); }
  #how-to-use > h2, #features > h2, .faq-header .title { text-align: center; }
  #how-to-use > .description { text-align: center; color: var(--text-2); margin-block-start: var(--s-3); }

  .how-to-use-container { display: grid; gap: 0; margin-block-start: var(--s-10);
    grid-template-columns: 1fr;
    background: var(--surface-1); border-radius: var(--r-lg); overflow: hidden; }
  .how-to-use-wrapper {
    display: grid; grid-template-columns: 56px 1fr;
    column-gap: var(--s-4); padding: var(--s-5);
  }
  .how-to-use-image { grid-column: 1; }
  .how-to-use-image .step-art {
    display: grid; place-items: center; inline-size: 56px; block-size: 56px;
    background: var(--surface-2); border: 0; border-radius: var(--r-md); color: var(--accent);
  }
  .how-to-use-image .step-ico { inline-size: 26px; block-size: 26px; }
  .how-to-use-content { grid-column: 2; display: grid; gap: var(--s-2); align-content: start; padding: 0; }
  @media (min-width: 720px) {
    .how-to-use-container { grid-template-columns: 1fr 1fr; }
  }
  .how-to-use-number {
    justify-self: start; font-size: var(--fs-xs); font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
    color: var(--accent-ink); background: var(--accent-soft); padding: 2px var(--s-2); border-radius: var(--r-pill);
  }
  .how-to-use-label { font-weight: 600; font-size: var(--fs-md); }
  .how-to-use-content hr { display: none; }
  .how-to-use-content p { color: var(--text-2); font-size: var(--fs-sm); }

  .features { display: grid; gap: var(--s-4); grid-template-columns: 1fr; }
  .features > h2 { grid-column: 1 / -1; }
  @media (min-width: 720px) { .features { grid-template-columns: repeat(3, 1fr); gap: var(--s-5); } }
  .feature { text-align: start; display: grid; gap: var(--s-3); justify-items: start;
    align-content: start; padding: var(--s-6);
    background: var(--surface-1); border: 0; border-radius: var(--r-lg); }
  .feature .image { display: grid; place-items: center; inline-size: 48px; block-size: 48px;
    background: var(--accent-soft); border: 0; border-radius: var(--r-md); }
  .feature .feat-ico { inline-size: 24px; block-size: 24px; color: var(--accent); }
  .feature h3 { font-size: var(--fs-md); }
  .feature p { color: var(--text-2); font-size: var(--fs-sm); }

  .faq-list { margin-block-start: var(--s-8);
    background: var(--surface-1); border-radius: var(--r-lg); overflow: hidden; }
  details.faq-item { border: 0; }
  details.faq-item[open] { background: var(--surface-2); }
  details.faq-item > summary { list-style: none; cursor: pointer;
    padding-block: var(--s-5); padding-inline: var(--s-5); border-radius: 0; }
  details.faq-item > summary:hover { background: var(--surface-2); }
  details.faq-item > summary:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }
  details.faq-item[open] > summary h3 { color: var(--accent-ink); }
  details.faq-item > summary::-webkit-details-marker { display: none; }
  details.faq-item > summary h3 {
    display: flex; align-items: center; justify-content: space-between; gap: var(--s-4);
    font-size: var(--fs-md); font-weight: 600; margin: 0;
  }
  .faq-chev { flex: none; inline-size: 20px; block-size: 20px; color: var(--text-3);
    transition: rotate var(--t-base) var(--ease); }
  details.faq-item[open] .faq-chev { rotate: 180deg; }
  details.faq-item > summary:hover h3 { color: var(--accent-ink); }
  .faq-body { padding-block-end: var(--s-5); padding-inline: var(--s-5); }
  .faq-body .text, .faq-body p { color: var(--text-2); }
  .faq-body a { text-decoration: underline; }

  .about-section, .contact-section, .section-404,
  .privacy-policy-section, .terms-of-service-section { padding-block: var(--s-16); }
  .about-section .container, .privacy-policy-section .container,
  .terms-of-service-section .container { max-width: var(--wrap); }
  .about-text, .privacy-policy-section p, .terms-of-service-section p { color: var(--text-2); margin-block: var(--s-3); }
  .privacy-policy-section h1, .terms-of-service-section h1 { margin-block-end: var(--s-6); }
  .privacy-policy-section h2, .terms-of-service-section h2 { font-size: var(--fs-xl); margin-block: var(--s-8) var(--s-3); }
  .privacy-policy-section h3, .terms-of-service-section h3 { font-size: var(--fs-md); margin-block: var(--s-5) var(--s-2); }
  .privacy-policy-section ul, .terms-of-service-section ul { color: var(--text-2); padding-inline-start: var(--s-5); }
  .section-404 { text-align: center; }

  footer.footer { margin-block-start: var(--s-20); border: 0; background: var(--surface-1); }
  .footer-info-top { padding-block: var(--s-12); }
  .footer-wrapper { display: grid; gap: var(--s-8); grid-template-columns: 1fr; max-width: 1180px; margin-inline: auto; }
  @media (min-width: 720px) { .footer-wrapper { grid-template-columns: 2fr 1fr 1fr; } }
  .footer-nav .wrap { display: grid; gap: var(--s-3); }
  .footer .wrap .logo a { color: var(--text-1); display: inline-flex; }
  .footer-nav .desc { color: var(--text-3); font-size: var(--fs-sm); max-inline-size: 42ch; }
  .footer-nav .heading { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .08em;
    color: var(--text-3); margin-block-end: var(--s-3); font-weight: 600; }
  .nav-menu-footer { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s-1); }
  .footer-link { color: var(--text-2); font-size: var(--fs-sm);
    display: inline-block; padding-block: var(--s-1); }
  .footer-link:hover { color: var(--text-1); }
  .footer-link.active { color: var(--text-1); font-weight: 600; }
  .footer-info-bot { border: 0; background: var(--bg); padding-block: var(--s-5); text-align: center; }
  .footer-info-bot p { color: var(--text-3); font-size: var(--fs-sm); }

  .offcanvas {
    position: fixed; inset-block: 0; inset-inline-start: 0; inline-size: min(320px, 86vw);
    background: var(--elevated); border: 0;
    border-start-end-radius: var(--r-lg); border-end-end-radius: var(--r-lg);
    display: flex; flex-direction: column; z-index: 1000;
    translate: -100% 0; visibility: hidden; transition: translate var(--t-base) var(--ease), visibility var(--t-base);
  }
  [dir="rtl"] .offcanvas { translate: 100% 0; }
  .offcanvas.show { translate: 0 0; visibility: visible; }
  .offcanvas-header { display: flex; align-items: center; justify-content: space-between;
    padding: var(--s-4) var(--s-4) var(--s-2); border: 0; }
  .offcanvas-header .navbar-brand { color: var(--text-1); display: inline-flex; }
  .offcanvas-body { padding: var(--s-4); }
  .navbar-nav { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s-1); }
  .navbar-nav .nav-link { display: flex; align-items: center; gap: var(--s-2);
    padding: var(--s-3); border-radius: var(--r-sm); color: var(--text-2); }
  .navbar-nav .nav-link:hover { background: var(--surface-3); color: var(--text-1); }
  .navbar-nav .nav-link.active { background: var(--accent-soft); color: var(--text-1); font-weight: 700; }
  body.backdrop::after { content: ""; position: fixed; inset: 0; background: var(--overlay); z-index: 900; }

  .modal { display: none; position: fixed; inset: 0; z-index: 1100;
    background: var(--overlay); padding: var(--s-4); overflow-y: auto; }
  .modal-dialog { max-inline-size: 460px; margin: 12vh auto; }
  .modal-content { background: var(--elevated); border: 0; border-radius: var(--r-lg); overflow: hidden; }
  .modal-header { display: flex; align-items: center; justify-content: space-between;
    gap: var(--s-4); padding: var(--s-5) var(--s-5) var(--s-3); border: 0; }
  .modal-title { font-size: var(--fs-md); font-weight: 600; margin: 0; }
  .close-button { inline-size: 36px; block-size: 36px; display: inline-flex; align-items: center; justify-content: center;
    background: var(--surface-3); border: 0; border-radius: var(--r-pill); color: var(--text-2); cursor: pointer; }
  .close-button::before { content: "✕"; font-size: var(--fs-base); }
  .close-button svg { display: none; }
  .close-button:hover { background: var(--surface-4); color: var(--text-1); }
  .close-button:active { scale: .94; }
  .modal-body { padding: 0 var(--s-5) var(--s-5); color: var(--text-2); }
  .modal-footer { padding: 0 var(--s-5) var(--s-5); display: flex; justify-content: flex-end; }
  .modal-button { padding: var(--s-3) var(--s-5); border: 0; border-radius: var(--r-md);
    background: var(--accent-solid); color: var(--on-accent); font-weight: 600; cursor: pointer;
    transition: background var(--t-fast) var(--ease), scale var(--t-fast) var(--ease); }
  .modal-button:hover { background: color-mix(in srgb, var(--accent-solid) 88%, white); }
  .modal-button:active { scale: .98; }
  .loading-container { display: grid; gap: var(--s-3); position: relative; padding-block: var(--s-1) 0; }
  .loading-container::after {
    content: ""; position: absolute; inset-inline: 0; inset-block-end: 0; block-size: 6px;
    background: var(--surface-3); border-radius: var(--r-pill); z-index: 0;
  }
  .loading-content { display: flex; align-items: center; gap: var(--s-2); color: var(--text-2); font-size: var(--fs-sm); }
  #progress { position: relative; z-index: 1;
    block-size: 6px; background: var(--accent); border-radius: var(--r-pill);
    inline-size: 0; transition: inline-size var(--t-base) var(--ease); }
  .progress-info { color: var(--text-2); font-size: var(--fs-sm); margin-block-start: var(--s-3); }

  .contact-section form { display: grid; gap: var(--s-4); max-inline-size: 560px; margin-inline: auto;
    background: var(--surface-1); padding: var(--s-6); border-radius: var(--r-lg); }
  .contact-section input, .contact-section textarea {
    inline-size: 100%; padding: var(--s-3) var(--s-4); font-size: var(--fs-base); font-family: inherit;
    background: var(--field); color: var(--text-1);
    border: 0; border-radius: var(--r-md);
    outline: 2px solid var(--field-edge); outline-offset: -2px;
  }
  .contact-section input::placeholder,
  .contact-section textarea::placeholder { color: var(--text-2); opacity: 1; }
  .submit-button { block-size: 48px; background: var(--accent-solid); color: var(--on-accent);
    border: 0; border-radius: var(--r-md); font-weight: 600; cursor: pointer;
    transition: background var(--t-fast) var(--ease), scale var(--t-fast) var(--ease); }
  .submit-button:hover { background: color-mix(in srgb, var(--accent-solid) 88%, white); }
  .submit-button:active { scale: .99; }
  #notification { display: none; padding: var(--s-3) var(--s-4); border-radius: var(--r-md); font-size: var(--fs-sm); }
  #notification.success { background: var(--accent-soft); color: var(--accent-ink); }
  #notification.error { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); }

  .st-sprite { position: absolute; inline-size: 0; block-size: 0; overflow: hidden; }
}

@layer utilities {
  @media (min-width: 900px) {
    :root { --fs-3xl: 3rem; --fs-2xl: 2.125rem; }
    #jumbotron h1.title { max-inline-size: 20ch; }
  }
  @media (max-width: 719px) {
    :root { --fs-3xl: 2rem; --fs-2xl: 1.5rem; }
    #jumbotron { padding-block: var(--s-10) var(--s-8); }
    #how-to-use, #features, #faq { padding-block: var(--s-12); }
  }

  #postUrl:focus-visible,
  .contact-section input:focus-visible,
  .contact-section textarea:focus-visible {
    outline: 2px solid var(--focus); outline-offset: 2px;
  }

  @media (forced-colors: active) {
    .main-nav, .feature, .media-card, .media-info, .faq-list, .how-to-use-container,
    .modal-content, .offcanvas, .language-selector .dropdown-menu, .dropdown-menu-nav,
    .contact-section form, footer.footer { border: 1px solid CanvasText; }

    #postUrl, .contact-section input, .contact-section textarea,
    .language-dropdown-btn, button.menu-toggle, .dark-mode .toggle-switch,
    .btn.download-another, .close-button, .paste-button, .clear-button,
    .download-button, #loadVideos, .submit-button, .modal-button,
    .resolution-badge { border: 1px solid ButtonText; }

    :focus-visible { outline-color: Highlight; }

    #progress { forced-color-adjust: none; background: Highlight; }
    .loading-container::after {
      forced-color-adjust: none; background: Canvas; border: 1px solid CanvasText; }
    .how-to-use-image .step-art, .feature .image, .how-to-use-number, #notification,
    details.faq-item[open] {
      forced-color-adjust: none; background: Canvas; color: CanvasText;
      border: 1px solid CanvasText; }
  }

  @media (prefers-contrast: more), (prefers-contrast: custom) {

    :is(.feature, .media-card, .media-info, .faq-list, .how-to-use-container,
        .modal-content, .offcanvas, .language-selector .dropdown-menu, .dropdown-menu-nav,
        .contact-section form, .language-dropdown-btn, button.menu-toggle,
        .dark-mode .toggle-switch, .btn.download-another, .close-button,
        .resolution-badge):not(:focus-visible) {
      outline: 2px solid var(--field-edge); outline-offset: -2px; }

    .main-nav { border-block-end: 2px solid var(--field-edge); }
    details.faq-item:not(:last-of-type) { border-block-end: 1px solid var(--separator); }
  }

  :focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
  details.faq-item > summary:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }
}

@layer utilities {
  @media (prefers-contrast: more), (prefers-contrast: custom) {
    :root      { --field-edge: #AEAEB2; --separator: #AEAEB2; }
    html.light { --field-edge: #636366; --separator: #636366; }
  }
}