:root {
  --ground: #e8ebef;
  --panel: #ffffff;
  --ink: #1a1e27;
  --ink-soft: #5a6170;
  --rule: #cfd5dd;
  --stripe: #f3f5f8;
  --cut: #6b3f7a;
  --add: #2e7048;
  --focus: #2f5fb3;
  --warn-bg: #f6ecd2;

  /* rarity-symbol colors, used as price tiers */
  --common: #2b2b2b;
  --uncommon: #8c9aa6;
  --rare: #c29a3a;
  --mythic: #d2552b;

  --serif: "Vollkorn", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #151922;
    --panel: #1d222d;
    --ink: #e7e9ee;
    --ink-soft: #9aa2b1;
    --rule: #323949;
    --stripe: #222835;
    --cut: #c49ad3;
    --add: #6cc08d;
    --focus: #8fb3f5;
    --warn-bg: #3b3220;
    --common: #e7e9ee;
    --uncommon: #a9b6c2;
    --rare: #dcb457;
    --mythic: #f07a4f;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}

.masthead, main, .colophon {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; }

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

/* ---------- masthead ---------- */

.masthead { padding-top: 56px; padding-bottom: 32px; }

h1 {
  margin: 0;
  font: 700 clamp(2.6rem, 6vw, 4rem)/1 var(--serif);
  letter-spacing: -0.02em;
}

.lede {
  margin: 14px 0 0;
  max-width: 34em;
  font: 500 italic 1.2rem/1.5 var(--serif);
  color: var(--ink-soft);
}

/* ---------- deck inputs ---------- */

.inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.deck-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.deck-head label { font: 700 1.25rem/1.2 var(--serif); }
.count { font-size: 0.85rem; color: var(--ink-soft); font-variant-numeric: tabular-nums; }

textarea {
  display: block;
  width: 100%;
  min-height: 300px;
  resize: vertical;
  padding: 14px 16px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: 400 14px/1.7 var(--sans);
}
textarea::placeholder { color: var(--ink-soft); opacity: 0.7; }
textarea:focus-visible { outline-offset: -1px; border-color: var(--focus); }

/* ---------- action ---------- */

.actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 24px 0 0;
}

button {
  font: 600 0.9rem/1 var(--sans);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 8px 12px;
  cursor: pointer;
}
@media (hover: hover) {
  button:hover:not(:disabled) { border-color: var(--ink-soft); }
  button.primary:hover:not(:disabled) { background: var(--ink-soft); border-color: var(--ink-soft); }
}
button:disabled { opacity: 0.55; cursor: default; }

button.primary {
  font-size: 1rem;
  padding: 14px 40px;
  background: var(--ink);
  border-color: var(--ink);
  color: var(--panel);
}

.status { margin: 0; color: var(--ink-soft); }
.status.error { color: var(--mythic); }

/* ---------- results ---------- */

.results:empty { display: none; }
.results { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--rule); }

h2 { margin: 0; font: 700 2rem/1.1 var(--serif); letter-spacing: -0.01em; }

.summary {
  margin: 12px 0 32px;
  max-width: 40em;
  font: 500 1.2rem/1.55 var(--serif);
  font-variant-numeric: lining-nums;
}
.summary strong { font-weight: 700; }

.lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.list-panel {
  background: var(--panel);
  border-radius: 6px;
  border-top: 3px solid var(--side);
}
.list-panel.cut { --side: var(--cut); }
.list-panel.add { --side: var(--add); }

.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--rule);
}
.list-header h3 { margin: 0; font: 700 1.5rem/1.1 var(--serif); color: var(--side); }
.list-meta { margin: 4px 0 0; font-size: 0.9rem; color: var(--ink-soft); font-variant-numeric: tabular-nums; }

.card-list { list-style: none; margin: 0; padding: 6px 0; }

.card-list li {
  display: grid;
  grid-template-columns: 40px 1.6em 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 6px 20px;
}
.card-list li:nth-child(even) { background: var(--stripe); }
.card-list li.empty { display: block; padding: 20px; color: var(--ink-soft); }

.thumb {
  display: block;
  width: 40px;
  height: 56px;
  border-radius: 3px;
  background: var(--rule);
  object-fit: cover;
}
img.thumb { cursor: zoom-in; }

.qty { color: var(--ink-soft); text-align: right; font-variant-numeric: tabular-nums; }

.name { font: 500 1.05rem/1.3 var(--serif); min-width: 0; }
.name a { text-decoration: none; }
.name a:hover { text-decoration: underline; text-underline-offset: 3px; }

.flag {
  margin-left: 8px;
  font: 600 0.75rem/1 var(--sans);
  color: var(--mythic);
}

.price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.price .each { font-size: 0.8rem; color: var(--ink-soft); }
.price .amount { font-weight: 500; }

/* rarity gem before each price and legend entry */
.price .amount::before,
.legend li::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 7px;
  transform: rotate(45deg) translateY(-1px);
  background: var(--gem, transparent);
  border-radius: 1px;
}
.tier-common { --gem: var(--common); }
.tier-uncommon { --gem: var(--uncommon); }
.tier-rare { --gem: var(--rare); }
.tier-mythic { --gem: var(--mythic); }
.price.tier-mythic .amount { color: var(--mythic); }

.warning {
  margin: 24px 0 0;
  padding: 14px 18px;
  border-radius: 6px;
  background: var(--warn-bg);
}

/* full-size card shown while hovering a thumbnail */
.card-preview {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  aspect-ratio: 488 / 680;
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(10, 14, 22, 0.35);
  pointer-events: none;
  z-index: 10;
  display: none;
}
.card-preview.visible { display: block; }

/* ---------- colophon ---------- */

.colophon {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 32px;
  padding-top: 64px;
  padding-bottom: 40px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.colophon p { margin: 0; max-width: 46em; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (max-width: 760px) {
  .masthead, main, .colophon { padding-left: 16px; padding-right: 16px; }
  .masthead { padding-top: 36px; padding-bottom: 24px; }
  .colophon { padding-top: 48px; padding-bottom: 32px; }
  .inputs, .lists { grid-template-columns: 1fr; }
  textarea { min-height: 200px; }
  .actions { flex-wrap: wrap; }
  button.primary { width: 100%; }
  .card-list li { padding: 6px 14px; gap: 10px; }
  .list-header { padding: 14px; }
}