:root {
  --paper: #f0e4c8;
  --paper-dark: #e4d5ae;
  --manila: #e8dcc0;
  --ink: #2b241a;
  --ink-soft: #5a5140;
  --rule-red: #b3372c;
  --rule-blue: #3a5a99;
  --stamp-green: #2f6b3a;
  --stamp-red: #a3312a;
  --accent: #8c5a2b;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Courier Prime", "Courier New", monospace;
  min-height: 100vh;
  position: relative;
}

/* Subtle paper-fiber texture, kept off body's own background so contrast
   checkers can resolve a flat background color for the text sitting on it. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.015) 0px, rgba(0, 0, 0, 0.015) 1px, transparent 1px, transparent 3px);
}

h1, h2, h3 {
  font-family: "Special Elite", "Courier New", monospace;
  margin: 0;
}

.stamp-title {
  font-size: 1.8rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-align: center;
  padding: 1.25rem 1rem 0.5rem;
}

/* Index card look, shared by gate form, toolbar, and game cards */
.index-card {
  position: relative;
  background: var(--manila);
  border: 1px solid #c9b98d;
  border-radius: 2px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  padding: 1.1rem 1rem 1rem 1.6rem;
}

.card-rule-top {
  position: absolute;
  top: 2.4rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--rule-red);
  opacity: 0.55;
}

.card-rule-blue {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1.05rem;
  width: 2px;
  background: var(--rule-blue);
  opacity: 0.45;
}

/* Password gate */
.gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.gate-card {
  width: 100%;
  max-width: 380px;
  padding-top: 3.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.gate-sub {
  margin: 0 0 0.25rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.field-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

input[type="text"],
input[type="search"],
input[type="password"],
select {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid #b8a878;
  border-radius: 3px;
  background: #fbf6e8;
  color: var(--ink);
  width: 100%;
}

.btn {
  font-family: "Special Elite", monospace;
  cursor: pointer;
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 0.55rem 1rem;
  background: var(--accent);
  color: #fbf6e8;
  letter-spacing: 0.03em;
}

.btn:hover {
  filter: brightness(1.08);
}

.btn-small {
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  white-space: nowrap;
}

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

.error-text {
  color: var(--stamp-red);
  font-size: 0.85rem;
  margin: 0;
}

/* Library layout */
.library-header {
  max-width: 900px;
  margin: 0 auto;
}

.toolbar {
  max-width: 900px;
  margin: 0.5rem auto 1rem;
  padding-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.toolbar-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.filters-row {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: flex-start;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border: none;
  padding: 0;
  margin: 0;
  min-width: 160px;
}

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
}

.checkbox-list label,
.toggle-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.toggle-group {
  justify-content: center;
}

.results-summary {
  max-width: 900px;
  margin: 0 auto 0.5rem;
  padding: 0 0.5rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.game-list {
  max-width: 900px;
  margin: 0 auto 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  padding: 0 0.5rem;
}

.category-heading {
  grid-column: 1 / -1;
  font-size: 1.1rem;
  color: var(--ink-soft);
  border-bottom: 2px solid var(--rule-red);
  padding-bottom: 0.25rem;
  margin: 1.25rem 0 0.25rem;
}

.game-card {
  padding-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.game-name {
  font-family: "Special Elite", monospace;
  font-size: 1.1rem;
}

.game-meta {
  font-size: 0.8rem;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 10px;
  border: 1px solid var(--ink-soft);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.game-description {
  font-size: 0.9rem;
  color: var(--ink);
  margin: 0;
}

.game-owner {
  font-size: 0.82rem;
  color: var(--ink-soft);
  font-style: italic;
}

.stamp {
  display: inline-block;
  align-self: flex-start;
  font-family: "Special Elite", monospace;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.7rem;
  border: 3px double currentColor;
  border-radius: 4px;
  transform: rotate(-3deg);
}

.stamp-available {
  color: var(--stamp-green);
}

.stamp-checked-out {
  color: var(--stamp-red);
}

.borrower-line {
  font-size: 0.85rem;
  color: var(--ink);
}

.checkout-form {
  display: flex;
  gap: 0.5rem;
}

.borrower-input {
  flex: 1;
}

.card-error {
  color: var(--stamp-red);
  font-size: 0.8rem;
  margin: 0;
}

.empty-state {
  max-width: 900px;
  margin: 2rem auto;
  text-align: center;
  color: var(--ink-soft);
}

@media (max-width: 480px) {
  .stamp-title {
    font-size: 1.4rem;
  }

  .filters-row {
    flex-direction: column;
  }

  .game-list {
    grid-template-columns: 1fr;
  }
}