/* DidGood · ScrantonCoin Campus Economy Sandbox
   Prestigious academic classroom branding. */
:root {
  --bg: #f7f4ec;
  --bg-elev: #ffffff;
  --bg-card: #fbfaf6;
  --border: #d7d2c4;
  --text: #334155;
  --muted: #64748b;
  --navy: #002855;
  --navy-soft: rgba(0, 40, 85, 0.08);
  --accent: #002855;
  --accent-soft: rgba(0, 40, 85, 0.08);
  --gold: #b8860b;
  --gold-bright: #c9a227;
  --gold-soft: rgba(184, 134, 11, 0.14);
  --success: #1b7a4e;
  --warn: #b45309;
  --danger: #b91c1c;
  --purple: #002855;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(0, 40, 85, 0.06), 0 8px 24px rgba(0, 40, 85, 0.06);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --serif: Georgia, "Source Serif 4", "Source Serif Pro", "Times New Roman", serif;
  --mono: "SF Mono", "Cascadia Code", "Consolas", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--navy); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  background: var(--navy);
  border-bottom: 3px solid var(--gold-bright);
  padding: 1rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 4px;
  background: var(--gold-bright);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--navy);
  letter-spacing: 0.02em;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.brand h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #fff;
}

.brand .tagline {
  margin: 0;
  font-size: 0.75rem;
  color: rgba(247, 244, 236, 0.78);
}

.header-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.badge {
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: #f7f4ec;
  white-space: nowrap;
}

.badge.gold {
  border-color: var(--gold-bright);
  background: rgba(201, 162, 39, 0.18);
  color: #f5e6b8;
}

.badge.ok {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.1);
  color: #f7f4ec;
}

/* Layout */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.zone {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}

.zone-label {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--navy-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  margin-bottom: 0.65rem;
}

.zone h2 {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
}

.zone h3 {
  margin: 1rem 0 0.5rem;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--navy);
}

.mission-line {
  font-size: 1.05rem;
  font-family: var(--serif);
  color: var(--navy);
  margin: 0.5rem 0 0.75rem;
  padding: 0.85rem 1rem;
  background: #f3efe3;
  border-left: 4px solid var(--gold);
  border-radius: 0 4px 4px 0;
}

.disclaimer {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
}

/* Accordion */
.accordion {
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.accordion summary {
  cursor: pointer;
  padding: 0.65rem 0.9rem;
  background: var(--bg-card);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--navy);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; color: var(--muted); font-size: 1.1rem; }
.accordion[open] summary::after { content: "−"; }

.accordion ul {
  margin: 0;
  padding: 0.75rem 0.9rem 0.9rem 1.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.accordion li { margin-bottom: 0.35rem; }

/* KPI grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin: 0.75rem 0 1rem;
}

@media (max-width: 800px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--navy);
  border-radius: 4px;
  padding: 0.9rem 1rem;
  min-height: 88px;
}

.kpi-card .kpi-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0 0 0.35rem;
  font-weight: 600;
  line-height: 1.3;
}

.kpi-card .kpi-value {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin: 0;
  color: var(--navy);
}

.kpi-card .kpi-hint {
  font-size: 0.7rem;
  color: var(--muted);
  margin: 0.25rem 0 0;
}

.kpi-card.loading .kpi-value::after {
  content: "…";
  color: var(--muted);
}

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 160px;
}

.field label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 600;
}

select, input, textarea {
  font: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem 0.65rem;
}

select:focus, input:focus, textarea:focus {
  outline: 2px solid var(--navy);
  outline-offset: 1px;
}

textarea { min-height: 72px; resize: vertical; width: 100%; }

.btn {
  font: inherit;
  font-weight: 600;
  font-size: 0.875rem;
  border: none;
  border-radius: 4px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: transform 0.1s, opacity 0.15s, background 0.15s;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--navy);
  color: #fff;
}

.btn-primary:hover:not(:disabled) { background: #00356e; }

.btn-secondary {
  background: #fff;
  color: var(--navy);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) { border-color: var(--navy); }

.btn-gold {
  background: var(--gold);
  color: #fff;
}

/* Chart + table */
.workspace-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 800px) {
  .workspace-grid { grid-template-columns: 1fr; }
}

.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.85rem;
  overflow: hidden;
}

.panel-title {
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 0.65rem;
  letter-spacing: 0.01em;
}

.chart-wrap {
  position: relative;
  height: 220px;
  width: 100%;
  background: #fff;
}

.chart-wrap canvas {
  width: 100% !important;
  height: 100% !important;
}

.table-wrap {
  max-height: 260px;
  overflow: auto;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

table.data th {
  position: sticky;
  top: 0;
  background: #eef2f6;
  text-align: left;
  padding: 0.45rem 0.5rem;
  border-bottom: 2px solid var(--navy);
  color: var(--navy);
  font-weight: 700;
  white-space: nowrap;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

table.data td {
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid #e6e2d6;
  color: var(--text);
}

table.data tr:nth-child(even) td { background: #faf8f2; }
table.data tr:hover td { background: #f3efe3; }

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 0.3rem;
}
.status-settled { background: var(--success); }
.status-pending { background: var(--warn); }
.status-failed { background: var(--danger); }

.ledger-status {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0.5rem 0;
}

.ledger-status.ready { color: var(--success); }
.ledger-status.error { color: var(--danger); }

/* Decision engine */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.85rem 1rem;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  margin-right: 0.45rem;
}

.step-title {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 0.5rem;
}

.step-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

@media (max-width: 600px) {
  .step-row { grid-template-columns: 1fr; }
}

.simple-words {
  margin-top: 0.5rem;
  padding: 0.55rem 0.75rem;
  background: #f3efe3;
  border: 1px solid #e4dcc8;
  border-left: 3px solid var(--gold);
  border-radius: 0 4px 4px 0;
  font-size: 0.8rem;
  color: var(--text);
}

.simple-words strong { color: var(--navy); }

.submit-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 0.5rem;
}

.result-card {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
  background: #f4f7f4;
  border: 1px solid #c5d8c8;
  border-left: 4px solid var(--success);
  border-radius: 4px;
  display: none;
}

.result-card.visible { display: block; }

.result-card h3 {
  margin: 0 0 0.5rem;
  color: var(--success);
  font-family: var(--serif);
}

.code-display {
  font-family: var(--mono);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--navy);
  margin: 0.35rem 0;
}

.hash-display {
  font-family: var(--mono);
  font-size: 0.7rem;
  word-break: break-all;
  color: var(--muted);
  background: #fff;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin: 0.5rem 0;
}

/* Vault */
.progress-bar-wrap {
  margin: 0.75rem 0 1rem;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.progress-track {
  height: 12px;
  background: #eeeae0;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--navy), var(--gold));
  border-radius: 2px;
  transition: width 0.4s ease;
}

.vault-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

@media (max-width: 800px) {
  .vault-grid { grid-template-columns: 1fr; }
}

.vault-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  min-height: 160px;
  position: relative;
}

.vault-card.locked {
  opacity: 0.78;
}

.vault-card.locked::after {
  content: "Locked";
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  font-size: 0.7rem;
  color: var(--muted);
  background: #fff;
  padding: 0.2rem 0.45rem;
  border-radius: 2px;
  border: 1px solid var(--border);
}

.vault-card.unlocked {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold-soft);
}

.vault-card.unlocked::after {
  content: "Unlocked";
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  font-size: 0.7rem;
  color: var(--gold);
  background: var(--gold-soft);
  padding: 0.2rem 0.45rem;
  border-radius: 2px;
}

.vault-letter {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.08em;
  margin: 0 0 0.35rem;
}

.vault-card h4 {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-size: 0.95rem;
  padding-right: 4.5rem;
  line-height: 1.35;
  color: var(--navy);
}

.vault-card p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.vault-placeholder {
  margin-top: 0.65rem;
  padding: 0.55rem;
  background: #fff;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px dashed var(--border);
  display: none;
}

.vault-card.unlocked .vault-placeholder { display: block; }

/* Footer */
.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
  border-top: 1px solid var(--border);
}

.site-footer strong { color: var(--navy); }

/* ===== Completion modal ===== */
.completion-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 40, 85, 0.45);
  backdrop-filter: blur(3px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.completion-modal-backdrop.open {
  display: flex;
}
.completion-modal {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-top: 4px solid var(--navy);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 560px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  padding: 1.35rem 1.5rem 1.5rem;
  position: relative;
}
.completion-modal h2 {
  margin: 0 0 0.35rem;
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  color: var(--navy);
}
.completion-modal .modal-sub {
  margin: 0 0 1.1rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.completion-modal .modal-close {
  position: absolute;
  top: 0.65rem;
  right: 0.75rem;
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 1.35rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem 0.4rem;
}
.completion-modal .modal-close:hover { color: var(--navy); }
.modal-option {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  margin-bottom: 0.85rem;
  background: var(--bg-card);
}
.modal-option h3 {
  margin: 0 0 0.65rem;
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--gold);
  letter-spacing: 0.03em;
}
.modal-code {
  font-family: var(--mono);
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-align: center;
  color: var(--navy);
  margin: 0.35rem 0 0.5rem;
  line-height: 1.1;
}
.modal-hash {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--success);
  text-align: center;
  margin: 0 0 0.85rem;
  word-break: break-all;
}
.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.modal-actions .btn { flex: 1 1 auto; min-width: 140px; }
.modal-copied {
  font-size: 0.75rem;
  color: var(--success);
  text-align: center;
  margin: 0.4rem 0 0;
  min-height: 1.1em;
}

/* Print-only evidence summary — hidden on screen */
#evidence-print {
  display: none;
}

@media print {
  body * { visibility: hidden !important; }
  #evidence-print,
  #evidence-print * {
    visibility: visible !important;
  }
  #evidence-print {
    display: block !important;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    max-width: 7.5in;
    padding: 0.4in 0.5in;
    margin: 0;
    color: #111 !important;
    background: #fff !important;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 10pt;
    line-height: 1.35;
    box-sizing: border-box;
  }
  .completion-modal-backdrop,
  .site-header,
  .site-footer,
  main,
  .skip-link {
    display: none !important;
  }
  @page {
    size: letter;
    margin: 0.45in;
  }
  #evidence-print h1 {
    font-size: 13pt;
    margin: 0 0 0.15in;
    color: #002855;
  }
  #evidence-print .ep-meta {
    font-size: 9pt;
    margin: 0 0 0.2in;
    color: #333;
  }
  #evidence-print .ep-code {
    font-family: Consolas, "SF Mono", monospace;
    font-size: 22pt;
    font-weight: 800;
    letter-spacing: 0.12em;
    margin: 0.1in 0 0.15in;
  }
  #evidence-print .ep-steps {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  #evidence-print .ep-steps li {
    margin: 0 0 0.08in;
    padding: 0.06in 0;
    border-bottom: 1px solid #ddd;
    page-break-inside: avoid;
  }
  #evidence-print .ep-steps strong {
    display: inline-block;
    min-width: 1.6in;
    color: #002855;
  }
  #evidence-print .ep-footer {
    margin-top: 0.25in;
    padding-top: 0.12in;
    border-top: 2px solid #002855;
    font-size: 7.5pt;
    color: #444;
    word-break: break-all;
  }
  #evidence-print .ep-watermark {
    position: fixed;
    bottom: 0.3in;
    right: 0.4in;
    font-size: 7pt;
    color: #999;
    opacity: 0.85;
  }
  #evidence-print .ep-note {
    font-size: 8pt;
    color: #555;
    margin: 0.08in 0 0.15in;
  }
}