:root {
  color-scheme: light;
  --brand: #0b5fcc;
  --brand-hover: #084aa6;
  --ink: #101828;
  --muted: #475467;
  --line: #d0d5dd;
  --surface: #ffffff;
  --canvas: #f7f9fc;
  --success: #08783f;
  --danger: #b42318;
  --shadow: 0 20px 55px rgba(16, 24, 40, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--canvas);
  font-family:
    Tahoma, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 50% -20%, rgba(11, 95, 204, 0.12), transparent 42rem),
    var(--canvas);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

.site-shell {
  display: grid;
  min-height: 100vh;
  grid-template-rows: auto 1fr auto;
}

.site-header,
.site-footer,
.main-content,
.legal-main {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid rgba(208, 213, 221, 0.65);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  direction: ltr;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-mark {
  width: 19px;
  height: 19px;
  border: 5px solid var(--brand);
  border-radius: 50% 50% 50% 16%;
  transform: rotate(-45deg);
}

.header-platforms,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}

.header-platforms a,
.footer-links a {
  color: var(--muted);
  font-size: 14px;
  transition: color 150ms ease;
}

.header-platforms a:hover,
.footer-links a:hover {
  color: var(--ink);
}

.main-content {
  display: grid;
  place-items: start center;
  padding-block: clamp(70px, 12vh, 150px) 90px;
}

.hero {
  width: min(890px, 100%);
  text-align: center;
}

.hero h1,
.legal-main h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.tool-card {
  margin-top: 34px;
  padding: 12px;
  border: 1px solid rgba(208, 213, 221, 0.8);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.download-form {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 120px 132px;
  gap: 10px;
}

.url-input,
.quality-select {
  width: 100%;
  min-height: 56px;
  border: 1px solid var(--line);
  border-radius: 13px;
  outline: 0;
  background: var(--surface);
  color: var(--ink);
  transition:
    border-color 150ms ease,
    box-shadow 150ms ease;
}

.url-input {
  direction: ltr;
  padding: 0 18px;
  text-align: left;
}

.url-input::placeholder {
  color: #98a2b3;
  text-align: right;
}

.quality-select {
  padding: 0 14px;
}

.url-input:focus,
.quality-select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(11, 95, 204, 0.12);
}

.submit-button,
.download-button {
  display: inline-flex;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 13px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  transition:
    background-color 150ms ease,
    transform 150ms ease;
}

.submit-button:hover:not(:disabled),
.download-button:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
}

.submit-button:focus-visible,
.download-button:focus-visible,
.secondary-button:focus-visible,
.platform-chip:focus-visible,
.supported-card:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(11, 95, 204, 0.25);
  outline-offset: 3px;
}

.submit-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.tool-state[data-open="true"] {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #eaecf0;
}

.status-row,
.result-item {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 4px 8px;
  text-align: right;
}

.status-copy {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid #d0d5dd;
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 750ms linear infinite;
}

.secondary-button {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--muted);
}

.error-box {
  padding: 13px 10px;
  color: var(--danger);
  text-align: right;
}

.results {
  display: grid;
  gap: 8px;
}

.result-item + .result-item {
  border-top: 1px solid #eaecf0;
}

.result-name {
  max-width: min(460px, 55vw);
  overflow: hidden;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.result-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  direction: ltr;
  text-align: right;
}

.download-button {
  min-width: 145px;
  min-height: 44px;
  padding-inline: 17px;
  white-space: nowrap;
}

.platform-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 34px;
}

.platform-chip {
  padding: 9px 13px;
  border: 1px solid #e4e7ec;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--muted);
  font-size: 13px;
  transition:
    border-color 150ms ease,
    color 150ms ease,
    background-color 150ms ease;
}

.platform-chip:hover,
.platform-chip[aria-current="page"] {
  border-color: rgba(11, 95, 204, 0.3);
  background: rgba(11, 95, 204, 0.06);
  color: var(--brand);
}

.site-footer {
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid rgba(208, 213, 221, 0.65);
  color: var(--muted);
  font-size: 13px;
}

.legal-main {
  align-self: start;
  max-width: 780px;
  padding-block: clamp(58px, 8vw, 100px) 90px;
}

.legal-main h1 {
  margin-bottom: 40px;
  font-size: clamp(30px, 4vw, 44px);
}

.legal-section {
  padding-block: 26px;
  border-top: 1px solid #e4e7ec;
}

.legal-section h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.legal-section p,
.legal-section li {
  color: var(--muted);
  line-height: 1.9;
}

.legal-section p {
  margin: 0;
}

.legal-section ul {
  margin: 0;
  padding-right: 20px;
}

.supported-grid,
.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.supported-card,
.status-card {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 20px;
  border: 1px solid #e4e7ec;
  border-radius: 14px;
  background: var(--surface);
  font-weight: 700;
}

.supported-card {
  transition:
    border-color 150ms ease,
    transform 150ms ease;
}

.supported-card:hover {
  border-color: rgba(11, 95, 204, 0.4);
  transform: translateY(-1px);
}

.status-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #98a2b3;
}

.status-dot[data-state="up"] {
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(8, 120, 63, 0.1);
}

.status-dot[data-state="down"] {
  background: var(--danger);
}

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

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

@media (max-width: 820px) {
  .header-platforms {
    display: none;
  }

  .download-form {
    grid-template-columns: minmax(0, 1fr) 110px;
  }

  .submit-button {
    grid-column: 1 / -1;
  }

  .main-content {
    padding-top: 80px;
  }
}

@media (max-width: 560px) {
  .site-header,
  .site-footer,
  .main-content,
  .legal-main {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    min-height: 66px;
  }

  .main-content {
    padding-block: 58px 70px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .tool-card {
    margin-top: 26px;
    padding: 9px;
    border-radius: 18px;
  }

  .download-form {
    grid-template-columns: 1fr;
  }

  .submit-button {
    grid-column: auto;
  }

  .url-input,
  .quality-select,
  .submit-button {
    min-height: 53px;
  }

  .status-row,
  .result-item {
    align-items: stretch;
    flex-direction: column;
    padding: 8px 5px;
  }

  .status-row .secondary-button,
  .download-button {
    width: 100%;
  }

  .result-name {
    max-width: calc(100vw - 70px);
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 22px;
  }

  .footer-links {
    gap: 14px;
  }

  .supported-grid,
  .status-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}