:root {
  --color-background: #fbf8f2;
  --color-surface: #ffffff;
  --color-surface-soft: #fffdf8;
  --color-text: #211b1d;
  --color-muted: #6f6668;
  --color-border: #e6ded8;
  --color-border-strong: #cfc2bd;
  --color-primary: #7a1f2b;
  --color-primary-hover: #641723;
  --color-primary-soft: #f5e8ea;
  --shadow-soft: 0 18px 45px rgba(43, 31, 24, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-background);
  color: var(--color-text);
  font-family: Arial, Helvetica, sans-serif;
}

.app-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.app-header {
  margin-bottom: 32px;
}

.eyebrow,
.step-label {
  margin: 0 0 8px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 3.5rem;
  line-height: 1;
}

h2 {
  font-size: 1.25rem;
  line-height: 1.2;
}

.intro {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.panel {
  margin-top: 18px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section-status {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.empty-state {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.5;
}

.status-message {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.5;
}

.status-message.is-error {
  color: var(--color-primary);
  font-weight: 700;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.manual-participant-form {
  display: grid;
  grid-template-columns: minmax(180px, 320px) auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.file-button {
  position: relative;
  overflow: hidden;
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(122, 31, 43, 0.28);
  outline-offset: 2px;
}

.button:disabled,
input:disabled,
select:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.button-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.button-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.button-secondary {
  border-color: var(--color-border-strong);
  background: var(--color-surface-soft);
  color: var(--color-text);
}

.button-secondary:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 220px));
  gap: 14px;
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.group-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.group-card {
  min-height: 160px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-soft);
}

.group-card h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.group-card ol {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.group-card li {
  padding: 6px 0;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--color-border-strong);
  border-radius: 8px;
  background: var(--color-surface-soft);
  color: var(--color-text);
  font: inherit;
}

input {
  padding: 0 12px;
}

select {
  padding: 0 10px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1040px;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

th {
  background: var(--color-surface-soft);
  color: var(--color-muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.score-entry {
  display: grid;
  gap: 8px;
}

.set-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.set-row input {
  width: 54px;
  min-height: 34px;
  padding: 0 8px;
}

.score-error {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
}

.score-summary {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.standings-grid {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.standings-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.standings-card h3 {
  margin: 0;
  padding: 14px;
  background: var(--color-surface-soft);
  font-size: 1rem;
}

.standings-card table {
  min-width: 760px;
}

.standings-card tr.is-qualified td:first-child {
  border-left: 4px solid var(--color-primary);
}

.knockout-grid {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.knockout-card {
  min-width: 280px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-soft);
}

.knockout-card h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.knockout-card ol,
.knockout-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.knockout-match-list {
  display: grid;
  gap: 12px;
}

.knockout-match {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.knockout-match .control-row {
  margin-bottom: 0;
}

.winner-card {
  border-color: var(--color-primary);
}

.winner-card p {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.participant-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.participant-list:empty {
  display: none;
}

.participant-list li {
  min-height: 40px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-soft);
  font-weight: 700;
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 24px, 1120px);
    padding: 28px 0;
  }

  h1 {
    font-size: 2.35rem;
  }

  .panel {
    padding: 18px;
  }

  .section-heading,
  .settings-grid,
  .manual-participant-form,
  .group-tools {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: grid;
  }
}