:root {
  color-scheme: dark;
  --bg: #1c1f23;
  --bg-top: #2b3036;
  --panel: #343940;
  --panel-soft: #2a2f35;
  --line: rgba(255, 255, 255, 0.18);
  --line-strong: rgba(255, 255, 255, 0.38);
  --text: #f6f7f8;
  --text-soft: rgba(246, 247, 248, 0.74);
  --accent: #eceef0;
  --shadow: 0 14px 28px rgba(9, 11, 14, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 100%);
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.16;
  pointer-events: none;
}

[hidden] {
  display: none !important;
}

button,
input,
select {
  font: inherit;
}

.page-shell {
  width: min(1400px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 18px 0 36px;
}

.site-header,
.composer,
.board,
.listing-row,
.empty-state,
.list-head {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 14px;
  padding: 16px 18px;
}

.header-main {
  display: flex;
  align-items: center;
  gap: 12px;
}

.listing-time,
.listing-mode,
.copy-button,
.filter-chip,
.board-stats small,
.list-head,
.header-badge {
  font-family: 'IBM Plex Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.4rem, 3.2vw, 2.4rem);
  line-height: 1;
}

.header-badge {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  color: var(--text-soft);
  text-align: right;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.help-button,
.help-close-button {
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--text);
}

.help-button {
  min-width: 82px;
}

.header-badge span {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
}

.stack-layout {
  display: grid;
  gap: 10px;
}

.composer,
.board {
  padding: 12px;
}

.listing-form {
  display: grid;
  grid-template-columns: minmax(200px, 1.5fr) minmax(170px, 0.9fr) minmax(260px, 1.5fr) auto;
  gap: 8px;
  align-items: end;
}

.field,
.field-group {
  display: grid;
  gap: 6px;
}

.field-group {
  min-width: 0;
}

#premier-fields {
  grid-template-columns: minmax(0, 1fr);
}

#ranked-fields {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field span {
  color: var(--text-soft);
  font-size: 0.82rem;
}

input,
select,
.submit-button,
.copy-button,
.filter-chip {
  border: 1px solid var(--line);
}

input,
select {
  width: 100%;
  min-height: 52px;
  padding: 14px 16px;
  background: var(--panel-soft);
  color: var(--text);
  outline: none;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 42px;
  background-image: linear-gradient(45deg, transparent 50%, var(--text) 50%), linear-gradient(135deg, var(--text) 50%, transparent 50%);
  background-position: calc(100% - 22px) calc(50% - 3px), calc(100% - 16px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

select option {
  color: var(--text);
  background: #101010;
}

input:focus,
select:focus {
  border-color: var(--line-strong);
  background-color: #32373e;
}

.submit-button,
.copy-button,
.filter-chip {
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease;
}

.submit-button:hover,
.copy-button:hover,
.filter-chip:hover,
.submit-button:focus-visible,
.copy-button:focus-visible,
.filter-chip:focus-visible {
  border-color: var(--line-strong);
}

.submit-button {
  min-height: 52px;
  padding: 14px 18px;
  background: var(--accent);
  color: #2a2e34;
  font-weight: 700;
}

.form-status {
  min-height: 1.1em;
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.board-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.board-title h2 {
  font-size: 1rem;
}

.help-dialog {
  width: min(520px, calc(100vw - 24px));
  margin: auto;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow);
}

.help-dialog::backdrop {
  background: rgba(0, 0, 0, 0.7);
}

.help-dialog-inner {
  padding: 18px;
}

.help-dialog-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.help-dialog-header h2 {
  font-size: 1rem;
}

.help-dialog p {
  color: var(--text-soft);
  line-height: 1.6;
}

.board-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.board-stats {
  min-width: 74px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  text-align: right;
}

.board-stats span {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  padding: 8px 10px;
  background: transparent;
  color: var(--text-soft);
  font-size: 0.75rem;
}

.filter-chip.is-active {
  background: var(--accent);
  color: #2a2e34;
}

.list-head,
.listing-row {
  display: grid;
  grid-template-columns: minmax(180px, 2fr) minmax(100px, 0.8fr) minmax(220px, 1.6fr) minmax(110px, 0.8fr) 92px;
  gap: 12px;
  align-items: center;
}

.list-head {
  margin-bottom: 8px;
  padding: 10px 12px;
  color: var(--text-soft);
  font-size: 0.72rem;
}

.listings {
  display: grid;
  gap: 4px;
}

.listing-row,
.empty-state {
  padding: 10px 12px;
}

.listing-mode,
.listing-time {
  font-size: 0.76rem;
  color: var(--text-soft);
}

.listing-code {
  color: var(--text);
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.listing-code:hover,
.listing-code:focus-visible {
  text-decoration: underline;
}

.listing-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.listing-meta span {
  padding: 4px 7px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--text);
  font-size: 0.75rem;
}

.copy-button {
  width: 100%;
  min-height: 34px;
  padding: 8px 10px;
  background: var(--panel-soft);
  color: var(--text);
  font-size: 0.76rem;
}

.empty-state {
  display: grid;
  gap: 8px;
  padding: 24px;
}

.empty-state p {
  color: var(--text-soft);
  line-height: 1.5;
}

@media (max-width: 1120px) {
  .listing-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #premier-fields,
  #ranked-fields {
    grid-column: span 2;
  }

  .submit-button {
    width: 100%;
  }

  .list-head,
  .listing-row {
    grid-template-columns: minmax(140px, 1.7fr) minmax(90px, 0.8fr) minmax(150px, 1.2fr) minmax(90px, 0.8fr) 82px;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100vw - 20px, 1180px);
    padding: 10px 0 20px;
  }

  .site-header,
  .composer,
  .board {
    padding: 10px;
  }

  .site-header,
  .board-toolbar,
  .board-actions,
  .header-actions,
  .header-main {
    align-items: start;
    flex-direction: column;
  }

  .help-button {
    width: auto;
    align-self: auto;
  }

  .listing-form,
  #premier-fields,
  #ranked-fields,
  .list-head,
  .listing-row {
    grid-template-columns: 1fr;
  }

  .list-head {
    display: none;
  }

  .listing-row {
    gap: 10px;
  }

  .copy-button {
    width: auto;
  }
}