@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&family=Spectral:wght@400;600&display=swap");

:root {
  --paper: #f6f1e6;
  --panel: #fff7ec;
  --ink: #1e1a14;
  --muted: #6d6253;
  --accent: #0d6b57;
  --accent-2: #b1492f;
  --line: #d8c9b1;
  --shadow: rgba(26, 20, 14, 0.18);
  --ring: rgba(13, 107, 87, 0.25);
  --font-display: "Space Grotesk", "Gill Sans", sans-serif;
  --font-body: "Spectral", "Iowan Old Style", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(13, 107, 87, 0.14), transparent 55%),
    radial-gradient(circle at 70% 10%, rgba(177, 73, 47, 0.12), transparent 50%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0));
  z-index: -1;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 24px 60px;
  position: relative;
}

.header {
  animation: rise 0.7s ease forwards;
}

.header-top {
  position: absolute;
  top: 28px;
  right: 72px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--muted);
}

.kicker {
  margin: 0;
}

.kicker-divider {
  opacity: 0.5;
}

.repo-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
}

.repo-link:hover {
  color: var(--accent);
}

.repo-link svg {
  width: 14px;
  height: 14px;
}

.header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.subtitle {
  max-width: 680px;
  font-size: 1.05rem;
  margin: 0;
  color: var(--muted);
}


.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  align-items: center;
  margin: 24px 0 16px;
  animation: rise 0.7s ease forwards;
  animation-delay: 0.08s;
}

.swap {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.swap:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 18px -12px var(--shadow);
}

.control-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.field {
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--muted);
}

.field input[type="text"] {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 10px;
  font-family: var(--font-display);
  color: var(--ink);
  min-width: 160px;
}

.field input[type="text"][readonly] {
  color: var(--muted);
  background: rgba(255, 250, 243, 0.6);
}

.field-toggle {
  gap: 10px;
  padding-right: 8px;
  justify-content: flex-start;
}

.field-toggle input[type="checkbox"] {
  accent-color: var(--accent);
  min-width: auto;
}

.field-wide {
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.field select {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 10px;
  font-family: var(--font-display);
  color: var(--ink);
}

.limit {
  margin-left: auto;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--muted);
  padding: 6px 12px;
  border: 1px dashed var(--line);
  border-radius: 999px;
}

.capacity {
  display: none;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--muted);
  padding: 6px 12px;
  border: 1px dashed var(--line);
  border-radius: 999px;
}

body[data-secret="on"] .capacity {
  display: inline-flex;
}

.help-panel {
  display: none;
  margin: 16px 0 22px;
  padding: 18px 20px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 250, 243, 0.7);
  box-shadow: 0 14px 26px -24px var(--shadow);
}

body[data-secret="on"] .help-panel {
  display: block;
}

.help-panel h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.help-panel h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.help-copy {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

.help-section {
  margin-top: 14px;
}

.help-section ul {
  margin: 6px 0 0 16px;
  padding: 0;
  color: var(--muted);
}

.help-section li {
  margin: 6px 0;
}

.carrier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 14px;
  margin-top: 10px;
}

.carrier-row {
  display: grid;
  grid-template-columns: 32px 1fr 1fr;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(216, 201, 177, 0.6);
  font-family: var(--font-display);
  color: var(--muted);
}

.code-section {
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px 14px;
}

.code-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(216, 201, 177, 0.6);
}

.code-row-placeholder {
  background: rgba(255, 255, 255, 0.35);
  border-color: rgba(216, 201, 177, 0.35);
}

.code-row-placeholder .code-label,
.code-row-placeholder .code-pill {
  color: #8a8174;
}

.code-row[role="button"] {
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.code-row[role="button"]:hover {
  background: #12110e;
  border-color: rgba(18, 17, 14, 0.5);
}

.code-row[role="button"]:hover .code-label,
.code-row[role="button"]:hover .code-pill {
  color: #fff;
}

.code-row[role="button"]:hover .code-pill {
  background: rgba(255, 255, 255, 0.14);
}

.code-row[role="button"]:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
}

.code-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.code-pill {
  font-family: "SFMono-Regular", "Menlo", "Monaco", "Courier New", monospace;
  font-size: 0.9rem;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(13, 107, 87, 0.12);
  color: var(--accent);
}

.status {
  margin: 8px 0 20px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(13, 107, 87, 0.08);
  color: var(--accent);
  font-family: var(--font-display);
}

.status.error {
  border-color: rgba(177, 73, 47, 0.4);
  background: rgba(177, 73, 47, 0.08);
  color: var(--accent-2);
}

.panes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  animation: rise 0.7s ease forwards;
  animation-delay: 0.14s;
}

.seed-panel {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  animation: rise 0.7s ease forwards;
  animation-delay: 0.22s;
}

.seed-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 18px 20px;
  background: transparent;
  box-shadow: none;
}

.page-footer {
  margin-top: 28px;
  text-align: center;
  color: #5a5144;
  font-size: 0.85rem;
}

.page-footer a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(90, 81, 68, 0.4);
}

.page-footer a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-footer p {
  margin: 8px 0 0;
}

.seed-card h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.seed-note {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

.seed-stream {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.seed-token {
  font-family: "SFMono-Regular", "Menlo", "Monaco", "Courier New", monospace;
  font-size: 0.85rem;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(13, 107, 87, 0.1);
  color: var(--accent);
  border: 1px solid rgba(13, 107, 87, 0.2);
}

.kindling-list {
  display: grid;
  gap: 10px;
}

.kindling-item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(216, 201, 177, 0.6);
  align-items: center;
}

.kindling-glyph {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--accent);
}

.kindling-gloss {
  font-size: 0.9rem;
  color: var(--muted);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pane {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px 16px 20px;
  box-shadow: 0 18px 30px -26px var(--shadow);
}

.pane-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-display);
  margin-bottom: 10px;
}

.pane-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.lang {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
}

.count {
  font-size: 0.85rem;
  color: var(--muted);
}

.copy {
  border: 1px solid var(--line);
  background: #fffaf3;
  width: 34px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: var(--muted);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.copy:hover {
  transform: translateY(-1px);
  color: var(--accent);
  border-color: var(--accent);
}

.copy:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
}

.copy svg {
  width: 16px;
  height: 16px;
}

.text {
  width: 100%;
  height: auto;
  min-height: 250px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: #fffaf3;
  padding: 14px;
  font-size: 1rem;
  line-height: 1.5;
  font-family: var(--font-body);
  color: var(--ink);
  resize: vertical;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.text:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--ring);
}

.channel-preview {
  display: none;
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  border: none;
  background: #fffaf3;
  overflow-x: auto;
  font-family: var(--font-display);
  gap: 6px 4px;
  flex-wrap: wrap;
  align-items: flex-end;
}

body[data-secret="on"] .channel-preview[data-side="right"] {
  display: flex;
}

.channel-cell {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  min-width: 0.7rem;
}

.channel-end {
  font-size: 0.55rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(177, 73, 47, 0.12);
  color: var(--accent-2);
  min-height: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.06em;
}

.channel-end.empty {
  background: transparent;
  color: transparent;
}

.channel-key {
  font-size: 0.65rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(13, 107, 87, 0.18);
  color: var(--accent);
  min-height: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.channel-key.bit-prefix {
  background: rgba(33, 112, 184, 0.18);
  color: #1c4f8f;
}

.channel-key.bit-payload {
  background: rgba(13, 107, 87, 0.2);
  color: var(--accent);
}

.channel-key.bit-padding {
  background: rgba(109, 98, 83, 0.18);
  color: #5a5144;
}

.channel-key.empty {
  background: transparent;
  color: transparent;
}

.channel-glyph {
  font-family: var(--font-body);
  font-size: 1rem;
}

.payload-summary {
  display: none;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  border: none;
  background: rgba(13, 107, 87, 0.06);
  font-family: var(--font-display);
}

body[data-secret="on"] .payload-summary {
  display: block;
}

.payload-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  display: inline-block;
}

.legend-swatch.bit-prefix {
  background: rgba(33, 112, 184, 0.4);
}

.legend-swatch.bit-payload {
  background: rgba(13, 107, 87, 0.4);
}

.legend-swatch.bit-padding {
  background: rgba(109, 98, 83, 0.4);
}

.signer-badge {
  display: none;
  margin-top: 10px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(13, 107, 87, 0.2);
  background: rgba(13, 107, 87, 0.08);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

body[data-secret="on"] .signer-badge {
  display: inline-flex;
}

.payload-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
}

.payload-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.payload-value {
  font-family: "SFMono-Regular", "Menlo", "Monaco", "Courier New", monospace;
  font-size: 0.9rem;
  color: var(--ink);
  word-break: break-all;
  text-align: right;
}

.payload-note {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
}

.stegotext-results {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(177, 73, 47, 0.08);
  border: 1px solid rgba(177, 73, 47, 0.2);
  font-family: var(--font-display);
}

.stegotext-header {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 8px;
}

.stegotext-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 4px 0;
}

.stegotext-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.stegotext-value {
  font-family: "SFMono-Regular", "Menlo", "Monaco", "Courier New", monospace;
  font-size: 0.9rem;
  color: var(--accent-2);
  word-break: break-all;
  text-align: right;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .seed-panel {
    grid-template-columns: 1fr;
  }

  .text {
    min-height: 220px;
  }

  .limit {
    margin-left: 0;
  }

  .capacity {
    margin-left: 0;
  }

  .header-top {
    position: static;
    margin-bottom: 12px;
  }
}