:root, [data-theme="light"] {
  --bg: #f4f8fb;
  --bg-surface: #e3eef8;
  --text-strong: #030812;
  --text: #142238;
  --text-muted: #506680;
  --border: #061024;
  --border-subtle: #bfd3e6;
  --accent: #0051ff;
  --accent-glow: rgba(0, 208, 255, 0.25);
  --accent-contrast: #ffffff;
  --mana-u: #0051ff;
  --mana-b: #00d0ff;
  --danger: #e11d48;
  --ub-gradient: linear-gradient(90deg, var(--mana-u) 0%, var(--mana-b) 100%);
  --shadow-ink: 3px 3px 0px #030812;
}

:root[data-theme="dark"] {
  --bg: #030710;
  --bg-surface: #091326;
  --text-strong: #ffffff;
  --text: #cbe0f5;
  --text-muted: #5c7899;
  --border: #162b4d;
  --border-subtle: #11223d;
  --accent: #00f2fe;
  --accent-glow: rgba(0, 242, 254, 0.2);
  --accent-contrast: #030710;
  --mana-u: #0066ff;
  --mana-b: #00f2fe;
  --danger: #ff2a54;
  --shadow-ink: 3px 3px 0px #000000;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #030710;
    --bg-surface: #091326;
    --text-strong: #ffffff;
    --text: #cbe0f5;
    --text-muted: #5c7899;
    --border: #162b4d;
    --border-subtle: #11223d;
    --accent: #00f2fe;
    --accent-glow: rgba(0, 242, 254, 0.2);
    --accent-contrast: #030710;
    --mana-u: #0066ff;
    --mana-b: #00f2fe;
    --danger: #ff2a54;
    --shadow-ink: 3px 3px 0px #000000;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

::selection {
  background: var(--mana-b);
  color: #030710;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  font: 0.9rem/1.45 ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, monospace;
  background: var(--bg);
  color: var(--text);
}

header, main, footer {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header {
  padding: 1rem 1.25rem;
  border-top: 4px solid transparent;
  border-bottom: 2px solid var(--border);
  border-image: var(--ub-gradient) 1;
}

:is(header, footer) nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  &:hover { color: var(--accent); }
}

main {
  flex: 1;
  padding-block: 1.5rem 2rem;
}

footer {
  padding: 1rem 1.25rem;
  border-top: 2px solid var(--border);
  font-size: 0.8rem;
}

section {
  position: relative;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border);
  border-top: 3px solid transparent;
  border-image: var(--ub-gradient) 1;
  background: var(--bg);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-ink);
}

h1, h2, h3 {
  color: var(--text-strong);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

p + p { margin-top: 0.75rem; }

.microText {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  margin-top: 0.75rem;
  border: 1px solid var(--border);
}

th, td {
  border: 1px solid var(--border-subtle);
  padding: 0.4rem 0.6rem;
  text-align: left;
  &.num {
    text-align: right;
    white-space: nowrap;
  }
}

th {
  font-size: 0.8rem;
  color: var(--text-strong);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-surface);
  white-space: nowrap;
}

thead th { border-bottom: 2px solid var(--border); }

tbody tr {
  transition: background-color 0.08s ease;
  &:hover {
    background: var(--bg-surface);
    box-shadow: inset 3px 0 0 var(--mana-u), inset 6px 0 0 var(--mana-b);
  }
}

.chips-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-strong);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  &:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
  }
  &.active {
    background: var(--bg);
    border-color: var(--mana-u);
    color: var(--mana-u);
    box-shadow: 2px 2px 0 var(--mana-b);
  }
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  flex: 1;
  min-width: 180px;
}

label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-strong);
}

input:not([type="checkbox"], [type="radio"]), select, textarea {
  width: 100%;
  padding: 0.45rem 0.6rem;
  font: inherit;
  color: var(--text-strong);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0;
  appearance: none;
  transition: border-color 0.1s ease, box-shadow 0.1s ease;
  &::placeholder { color: var(--text-muted); }
  &:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
  }
}

select {
  padding-right: 2rem;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-strong) 50%),
  linear-gradient(135deg, var(--text-strong) 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}

.check-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font: normal 0.85rem inherit;
  text-transform: none;
  cursor: pointer;
}

input:is([type="checkbox"], [type="radio"]) {
  accent-color: var(--accent);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  font: 700 0.85rem inherit;
  text-decoration: none;
  cursor: pointer;
  color: var(--accent-contrast);
  background: var(--text-strong);
  border: 1px solid var(--text-strong);
  transition: all 0.1s ease;
  &:hover {
    background: var(--mana-u);
    border-color: var(--mana-b);
    color: #ffffff;
    box-shadow: 2px 2px 0 var(--mana-b);
  }
  &.secondary {
    background: var(--bg-surface);
    color: var(--text-strong);
    border-color: var(--border);
    &:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: var(--bg);
      box-shadow: 2px 2px 0 var(--mana-u);
    }
  }
}

:is(button, input, select):disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error-panel {
  max-width: 580px;
  margin: 4rem auto;
  border-image: linear-gradient(90deg, var(--danger), var(--mana-u)) 1;
}

.error-split {
  display: flex;
  align-items: stretch;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.error-status {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.1rem;
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
  background: var(--bg-surface);
  border: 1px solid var(--danger);
  box-shadow: 2px 2px 0 var(--danger);
  color: var(--danger);
  user-select: none;
}

.error-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  & .microText {
    margin-bottom: 0.2rem;
    letter-spacing: 0.05em;
    color: var(--danger);
  }
}

.error-msg {
  color: var(--text);
  word-break: break-word;
}

.error-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.card-ref {
  font-weight: 600;
  text-decoration: underline dotted;
  text-underline-offset: 3px;
  cursor: pointer;
}

.card-tooltip {
  position: fixed;
  z-index: 9999;
  width: 220px;
  aspect-ratio: 488 / 680;
  pointer-events: none;
  background: var(--bg-surface);
  border: 2px solid var(--mana-b);
  box-shadow: var(--shadow-ink);
  display: none;
  &.visible { display: block; }
  & img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }
}

.deck-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.deck-actions {
  display: flex;
  gap: 0.5rem;
}

.deck-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 1.25rem;
  align-items: start;
}

.deck-group { margin-bottom: 0; }

.deck-qty {
  width: 36px;
  font-weight: 700;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  header, main, footer {
    padding-inline: 0.65rem;
  }

  main {
    padding-block: 1rem 1.5rem;
  }

  main > div[style*="grid"] {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
  }

  section {
    padding: 0.85rem;
    margin-bottom: 1rem;
  }

  table {
    font-size: 0.8rem;
  }

  th, td {
    padding: 0.35rem 0.45rem;
  }

  .error-split {
    flex-direction: column;
    align-items: flex-start;
  }

  .error-actions {
    justify-content: stretch;
    & .btn { flex: 1; }
  }
}

.deck-title {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}
.deck-title-link {
  color: inherit;
  text-decoration: none;
}
.deck-meta-line {
  margin-bottom: 0;
}
.text-strong {
  color: var(--text-strong);
}
.sr-only-textarea {
  display: none;
}