:root {
  --background: #0b0e0f;
  --line: #2d3434;
  --text: #e9e7df;
  --muted: #929998;
  --accent: #d2ae62;
  --maxWidth: 800px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--background);
  color: var(--text);
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.siteHeader,
main {
  width: min(var(--maxWidth), calc(100% - 40px));
  margin: 0 auto;
}

.siteHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.logo {
  color: var(--accent);
  font-family: monospace;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.pageNav {
  display: flex;
  gap: 22px;
}

.pageLink {
  color: var(--muted);
  font-family: monospace;
  font-size: 13px;
  text-decoration: none;
}

.pageLink:hover,
.pageLink.active {
  color: var(--text);
}

main {
  padding: 24px 0 64px;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

h1, h2, p {
  margin-top: 0;
}

h1 {
  max-width: 620px;
  margin-bottom: 16px;
  font-size: clamp(2.6rem, 7vw, 5rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 1.1rem;
  font-weight: 600;
}

.toolCard {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.toolCard:first-child {
  border-top: 0;
  padding-top: 48px;
}

.formRow {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.passwordOptions {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.passwordOption {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--text);
  cursor: pointer;
}

.passwordOption input {
  width: auto;
  margin: 0;
  accent-color: var(--accent);
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

input,
select,
button {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--background);
  color: var(--text);
  font: inherit;
}

input::placeholder {
  color: var(--muted);
}

button {
  background: var(--accent);
  border-color: var(--accent);
  color: #111;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

button:hover:not(:disabled) {
  opacity: 0.9;
}

button:disabled,
input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.result {
  min-height: 48px;
  margin-top: 18px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--text);
  line-height: 1.5;
  cursor: pointer;
}

.result p {
  margin: 0;
  transition: color 0.2s ease;
}

.result:hover p {
  color: var(--accent);
}

#passwordResult,
#passwordResult p {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.explanation {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.siteFooter {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--maxWidth), calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: monospace;
  font-size: 12px;
}

.contactLinks {
  display: flex;
  gap: 16px;
}

.contactLinks a {
  color: var(--accent);
  text-decoration: none;
}

.contactLinks a:hover {
  text-decoration: underline;
}

#qrImage {
  display: block;
  width: 100%;
  max-width: 200px;
}

.qrFrame {
  display: none;
  width: fit-content;
  max-width: 200px;
  margin-top: 16px;
  overflow: hidden;
  border-radius: 12px;
  background: #fff;
}

@media (max-width: 600px) {
  .siteHeader,
  main,
  .siteFooter {
    width: min(100% - 28px, var(--maxWidth));
  }

  .siteHeader {
    padding: 20px 0;
  }

  main {
    padding-top: 32px;
  }

  .toolCard {
    padding: 40px 0;
  }

  .siteFooter {
    display: block;
  }

  .contactLinks {
    margin-top: 12px;
  }
}