:root {
  --paper: #f0ede6;
  --paper-raised: #faf8f4;
  --ink: #1a2e25;
  --ink-soft: #3d5a4c;
  --muted: #6b7f74;
  --line: #d4cfc5;
  --accent: #2d4a3e;
  --accent-soft: #e4ede8;
  --warm: #8b4513;
  --warm-soft: #f5ebe0;
  --radius: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

.mono {
  font-family: "JetBrains Mono", "Fira Mono", monospace;
}

.page {
  max-width: 660px;
  margin: 0 auto;
  padding: 52px 20px 80px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 11px;
  border-radius: 5px;
  margin-bottom: 18px;
}

h1 {
  font-size: clamp(28px, 4.5vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: var(--ink);
}

.sub {
  color: var(--ink-soft);
  font-size: 16px;
  max-width: 48ch;
  margin: 0 0 36px;
}

.tool-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--line);
  padding-bottom: 0;
}

.tab-btn {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border: none;
  background: none;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition:
    color 0.15s,
    border-color 0.15s;
}

.tab-btn:hover {
  color: var(--ink-soft);
}
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.tool-panel {
  display: none;
}
.tool-panel.active {
  display: block;
}

.input-wrap {
  background: var(--paper-raised);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.input-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 10px;
}

.fio-input {
  width: 100%;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 18px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
}

.fio-input:focus {
  border-color: var(--accent);
}
.fio-input::placeholder {
  color: var(--muted);
}

.doc-select-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  align-items: center;
}

.doc-chip {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s;
}

.doc-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.doc-chip.active {
  background: var(--accent);
  color: var(--paper-raised);
  border-color: var(--accent);
}

.result-block {
  background: var(--paper-raised);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 16px;
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
  pointer-events: none;
}

.result-block.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--accent-soft);
}

.result-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.copy-btn {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: none;
  border: 1.5px solid var(--accent);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition:
    background 0.15s,
    color 0.15s;
}

.copy-btn:hover {
  background: var(--accent);
  color: var(--paper-raised);
}
.copy-btn.copied {
  background: var(--accent);
  color: var(--paper-raised);
}

.result-value {
  font-family: "JetBrains Mono", "Fira Mono", monospace;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  padding: 20px 18px;
  letter-spacing: 0.02em;
  word-break: break-all;
}

.cases-table {
  width: 100%;
  border-collapse: collapse;
}

.cases-table tr {
  border-bottom: 1px solid var(--line);
}

.cases-table tr:last-child {
  border-bottom: none;
}

.cases-table td {
  padding: 12px 18px;
  font-size: 15px;
  vertical-align: top;
}

.cases-table td:first-child {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  width: 120px;
  padding-top: 14px;
}

.cases-table td:last-child {
  font-family: "JetBrains Mono", "Fira Mono", monospace;
  font-weight: 600;
  color: var(--ink);
}

.case-copy {
  float: right;
  font-size: 11px;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-family: "Inter", system-ui, sans-serif;
}

.case-copy:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.doc-note {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--warm-soft);
  border-left: 3px solid var(--warm);
  border-radius: 0 6px 6px 0;
}

.how {
  margin-top: 52px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.how-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

.how-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.how-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--ink-soft);
}

.how-num {
  font-family: "JetBrains Mono", "Fira Mono", monospace;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.doc-links {
  margin-top: 36px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: center;
}

.doc-links a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition:
    color 0.15s,
    border-color 0.15s;
}

.doc-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.disclaimer {
  margin-top: 32px;
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 10px;
}

@media (max-width: 480px) {
  .page {
    padding: 32px 16px 60px;
  }
  .result-value {
    font-size: 16px;
  }
  .cases-table td:first-child {
    width: 90px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .result-block {
    transition: none !important;
  }
}