/* =========================================================================
   Design tokens and layout for the Technocore Contribution Signer.
   Palette: kraft "paper" surfaces for public content, dark "ink" surfaces
   for the local vault sidebar. --seal is the primary accent, --stamp-red
   is reserved for warnings and irreversible actions.
   ========================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

:root {
  --ink: #12181f;
  --ink-soft: #1b232d;
  --ink-softer: #232d38;
  --paper: #dbd3b8;
  --paper-soft: #e8e1c9;
  --paper-card: #f1ecd9;
  --seal: #b8862e;
  --seal-bright: #d6a84a;
  --stamp-red: #a9312b;
  --stamp-red-bright: #c33f38;
  --verified: #4b6c4f;
  --verified-bright: #5f8664;
  --ink-text: #ede7d3;
  --ink-text-dim: #a8a294;
  --paper-text: #16130d;
  --paper-text-dim: #5a5343;
  --rule-on-ink: rgba(237, 231, 211, 0.14);
  --rule-on-paper: rgba(22, 19, 13, 0.16);

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --radius: 3px;
  --shadow-lift: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 17.5px;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--ink-text);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

a {
  color: inherit;
}

button {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--seal-bright);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------- layout */

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.masthead {
  border-bottom: 1px solid var(--rule-on-ink);
  padding: 22px 0 18px;
}

.masthead-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.masthead h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin: 0;
}

.masthead .sub {
  font-size: 0.92rem;
  color: var(--ink-text-dim);
  margin-top: 6px;
  max-width: 60ch;
}

.masthead-links {
  display: flex;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.masthead-links a {
  text-decoration: none;
  border-bottom: 1px dotted var(--ink-text-dim);
}

.masthead-links a:hover {
  border-bottom-color: var(--seal-bright);
  color: var(--seal-bright);
}

.warning-bar {
  background: var(--stamp-red);
  color: var(--ink-text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 10px 20px;
  text-align: center;
  letter-spacing: 0.01em;
}

.warning-bar strong {
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  padding: 32px 0 64px;
  align-items: start;
}

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

/* ------------------------------------------------------------ entry tabs */

.entry-tabs {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 20px;
  border: 1px solid var(--rule-on-ink);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 700px) {
  .entry-tabs {
    flex-direction: row;
  }
}

.entry-tab {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--ink-soft);
  border: none;
  color: var(--ink-text-dim);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.86rem;
  border-bottom: 2px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.entry-tab:hover {
  background: var(--ink-softer);
  color: var(--ink-text);
}

.entry-tab .num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--seal-bright);
  min-width: 1.6em;
}

.entry-tab[aria-selected="true"] {
  background: var(--paper);
  color: var(--paper-text);
  border-bottom-color: var(--seal);
}

.entry-tab[aria-selected="true"] .num {
  color: var(--stamp-red);
}

.entry-tab .state {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--verified-bright);
  opacity: 0;
}

.entry-tab.done .state {
  opacity: 1;
}

.entry-tab[aria-selected="true"] .state {
  color: var(--verified);
}

.entry-tab:disabled,
.entry-tab.locked {
  cursor: not-allowed;
  opacity: 0.4;
}

.entry-tab:disabled:hover,
.entry-tab.locked:hover {
  background: var(--ink-soft);
  color: var(--ink-text-dim);
}

/* --------------------------------------------------------------- panels */

.panel {
  background: var(--paper-card);
  color: var(--paper-text);
  border: 1px solid var(--rule-on-paper);
  border-radius: var(--radius);
  padding: 28px;
}

.panel h2 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 1.3rem;
  margin: 0 0 6px;
}

.panel .lede {
  color: var(--paper-text-dim);
  margin: 0 0 22px;
  max-width: 62ch;
}

.panel section + section {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px dashed var(--rule-on-paper);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--paper-text-dim);
  margin-bottom: 6px;
}

.field input[type="text"],
.field input[type="password"],
.field input[type="url"],
.field textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--rule-on-paper);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--paper-text);
}

.field textarea {
  min-height: 90px;
  resize: vertical;
  font-family: var(--font-body);
}

.field .hint {
  font-size: 0.78rem;
  color: var(--paper-text-dim);
  margin-top: 5px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 560px) {
  .field-row {
    grid-template-columns: 1fr;
  }
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.88rem;
  margin-bottom: 8px;
}

.check input {
  margin-top: 3px;
}

/* --------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.82rem;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.08s ease, filter 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary {
  background: var(--seal);
  color: #1a1305;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-ghost {
  background: transparent;
  border-color: var(--rule-on-paper);
  color: var(--paper-text);
}

.btn-ghost:hover:not(:disabled) {
  border-color: var(--paper-text);
}

.btn-danger {
  background: transparent;
  border-color: var(--stamp-red);
  color: var(--stamp-red);
}

.btn-danger:hover:not(:disabled) {
  background: var(--stamp-red);
  color: var(--ink-text);
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}

/* dark-panel button variants (vault sidebar) */
.vault .btn-ghost {
  border-color: var(--rule-on-ink);
  color: var(--ink-text);
}
.vault .btn-ghost:hover:not(:disabled) {
  border-color: var(--ink-text);
}

/* ----------------------------------------------------------------- seal */

.seal-badge {
  width: 108px;
  height: 108px;
  border-radius: 50%;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 35% 30%, var(--seal-bright), var(--seal) 60%, #7a5a1e 100%);
  box-shadow: inset 0 0 0 3px rgba(0, 0, 0, 0.25), inset 0 0 0 8px rgba(237, 231, 211, 0.14),
    0 6px 18px rgba(0, 0, 0, 0.4);
  position: relative;
}

.seal-badge::before {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 50%;
  border: 1px dashed rgba(26, 19, 5, 0.35);
}

.seal-badge .fp {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  color: #1a1305;
  text-align: center;
  line-height: 1.3;
  padding: 0 10px;
  word-break: break-all;
}

.seal-badge.empty {
  background: var(--ink-softer);
  box-shadow: inset 0 0 0 3px rgba(0, 0, 0, 0.2), inset 0 0 0 8px rgba(237, 231, 211, 0.06);
}

.seal-badge.empty .fp {
  color: var(--ink-text-dim);
  font-size: 0.68rem;
}

/* --------------------------------------------------------------- stamps */

.stamp {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 2px solid currentColor;
  border-radius: 3px;
  transform: rotate(-2deg);
}

.stamp-pending {
  color: var(--ink-text-dim);
  border-color: var(--ink-text-dim);
}

.stamp-verified {
  color: var(--verified-bright);
  border-color: var(--verified-bright);
}

.stamp-warning {
  color: var(--stamp-red-bright);
  border-color: var(--stamp-red-bright);
}

/* ------------------------------------------------------------- data box */

.data-box {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  background: rgba(22, 19, 13, 0.05);
  border: 1px solid var(--rule-on-paper);
  border-radius: var(--radius);
  padding: 12px 14px;
  word-break: break-all;
  position: relative;
}

.data-box .copy {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.65rem;
}

.result-box {
  margin-top: 14px;
  padding: 14px;
  border-left: 3px solid var(--verified);
  background: rgba(75, 108, 79, 0.08);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.result-box.err {
  border-left-color: var(--stamp-red);
  background: rgba(169, 49, 43, 0.08);
}

/* -------------------------------------------------------------- receipt */

.receipt {
  border: 1px solid var(--rule-on-paper);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.receipt-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--rule-on-paper);
  font-size: 0.85rem;
}

.receipt-row:last-child {
  border-bottom: none;
}

.receipt-row .k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--paper-text-dim);
  flex-shrink: 0;
  padding-top: 2px;
}

.receipt-row .v {
  font-family: var(--font-mono);
  text-align: left;
  overflow-wrap: anywhere;
}

.receipt-row.status .v {
  color: var(--verified);
  font-weight: 600;
}

.receipt-note {
  margin-top: 10px;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--paper-text-dim);
  background: rgba(22, 19, 13, 0.04);
  border: 1px dashed var(--rule-on-paper);
  border-radius: var(--radius);
}

.receipt-note a {
  color: var(--paper-text);
  border-bottom: 1px dotted var(--paper-text-dim);
  text-decoration: none;
}

.receipt-note a:hover {
  border-bottom-color: var(--seal);
  color: var(--seal);
}

/* ------------------------------------------------------------- vault ui */

.vault {
  background: var(--ink-soft);
  border: 1px solid var(--rule-on-ink);
  border-radius: var(--radius);
  padding: 22px;
  position: sticky;
  top: 20px;
}

@media (max-width: 900px) {
  .vault {
    position: static;
  }
}

.vault h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 1rem;
  margin: 0 0 4px;
}

.vault .vault-status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-text-dim);
  margin-bottom: 16px;
}

.vault-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--rule-on-ink);
  font-size: 0.82rem;
}

.vault-row:last-of-type {
  border-bottom: none;
}

.vault-row .k {
  color: var(--ink-text-dim);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.vault-row .v {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-align: right;
  overflow-wrap: anywhere;
}

.progress-track {
  height: 6px;
  background: var(--ink-softer);
  border-radius: 3px;
  overflow: hidden;
  margin: 16px 0 4px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--seal), var(--seal-bright));
  width: 0%;
  transition: width 0.3s ease;
}

.progress-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-text-dim);
  text-align: right;
}

.vault .btn-row {
  margin-top: 18px;
}

/* ------------------------------------------------------------- contrib */

.contrib-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 6px;
}

.contrib-table th,
.contrib-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule-on-paper);
  vertical-align: top;
}

.contrib-table th {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--paper-text-dim);
}

/* ------------------------------------------------------------- footer */

.site-footer {
  border-top: 1px solid var(--rule-on-ink);
  padding: 24px 0 40px;
  font-size: 0.78rem;
  color: var(--ink-text-dim);
}

.site-footer a {
  border-bottom: 1px dotted var(--ink-text-dim);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--seal-bright);
  border-bottom-color: var(--seal-bright);
}

.hidden {
  display: none !important;
}

@media print {
  .vault,
  .entry-tabs,
  .warning-bar,
  .masthead-links,
  .btn {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}