:root {
  --bg: #eef3ef;
  --card: #ffffff;
  --ink: #14231b;
  --muted: #637068;
  --line: #d8e1da;
  --green: #0b5d35;
  --green-2: #12824d;
  --green-soft: #e4f3ea;
  --gold: #f2c94c;
  --danger: #b3261e;
  --shadow: 0 12px 30px rgba(24, 56, 38, .09);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top right, #d5eadc 0, transparent 34%), var(--bg);
  color: var(--ink);
  min-height: 100vh;
}
button, input, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.app-header {
  background: linear-gradient(135deg, #073d24, var(--green));
  color: white;
  padding: 24px max(18px, calc((100vw - 1280px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  box-shadow: var(--shadow);
}
.app-header h1 { margin: 2px 0 0; font-size: clamp(1.45rem, 4vw, 2.25rem); }
.eyebrow, .section-kicker { margin: 0; font-size: .72rem; letter-spacing: .14em; font-weight: 800; opacity: .75; }
.header-actions, .button-row { display: flex; flex-wrap: wrap; gap: 10px; }

.tabs {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 10px max(14px, calc((100vw - 1280px) / 2));
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 10px 15px;
  border-radius: 999px;
  white-space: nowrap;
  font-weight: 750;
}
.tab.active { background: var(--green); color: white; }

.container { max-width: 1280px; margin: 24px auto; padding: 0 16px 54px; }
.panel { display: none; }
.panel.active { display: block; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.section-head h2 { margin: 4px 0 0; font-size: clamp(1.4rem, 3vw, 2rem); }
.section-kicker { color: var(--green); opacity: 1; }
.save-status { color: var(--muted); font-size: .86rem; }

.config-grid, .knockout-config {
  display: grid;
  grid-template-columns: minmax(220px, 2fr) repeat(2, minmax(140px, 1fr));
  gap: 14px;
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(216,225,218,.8);
}
.knockout-config { grid-template-columns: minmax(240px, 1fr) auto; align-items: end; }
label { color: var(--muted); font-size: .86rem; font-weight: 700; display: grid; gap: 7px; }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 11px;
  padding: 11px 12px;
  outline: none;
}
input:focus, select:focus { border-color: var(--green-2); box-shadow: 0 0 0 3px rgba(18,130,77,.12); }

.button-row { margin: 14px 0 20px; }
.btn {
  border: 0;
  border-radius: 11px;
  padding: 11px 15px;
  font-weight: 800;
  transition: transform .15s ease, opacity .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--green); color: white; }
.btn-secondary { background: var(--green-soft); color: var(--green); }
.btn-light { background: rgba(255,255,255,.13); color: white; border: 1px solid rgba(255,255,255,.28); }
.btn-danger { background: #fde9e7; color: var(--danger); }
.file-btn input { display: none; }

.team-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.group-card, .table-card, .matches-card, .qualifier-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.group-card h3, .table-card h3, .matches-card h3, .qualifier-card h3 {
  margin: 0;
  padding: 14px 16px;
  background: var(--green);
  color: white;
  font-size: 1rem;
}
.group-card .fields { padding: 14px; display: grid; gap: 10px; }
.team-row { display: grid; grid-template-columns: 30px 1fr; align-items: center; gap: 8px; }
.team-number { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: var(--green-soft); color: var(--green); font-weight: 900; font-size: .8rem; }

.danger-zone {
  margin-top: 30px;
  border: 1px solid #ecc7c4;
  background: #fffafa;
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.danger-zone p { margin: 4px 0 0; color: var(--muted); font-size: .86rem; }

.compact-controls { min-width: 145px; }
.empty-state {
  padding: 42px 20px;
  border: 1px dashed #adc0b2;
  border-radius: var(--radius);
  text-align: center;
  color: var(--muted);
  background: rgba(255,255,255,.55);
}

.matches-grid, .tables-grid, .qualifier-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.match-list { padding: 10px 14px 14px; display: grid; gap: 9px; }
.round-label { color: var(--green); font-size: .78rem; font-weight: 900; margin: 7px 0 -1px; }
.match-row {
  display: grid;
  grid-template-columns: 1fr 48px 16px 48px 1fr;
  gap: 8px;
  align-items: center;
  border-bottom: 1px solid #edf1ee;
  padding: 9px 0;
}
.match-row:last-child { border-bottom: 0; }
.team-home { text-align: right; }
.team-away { text-align: left; }
.match-row input { padding: 8px 4px; text-align: center; font-weight: 900; }
.score-separator { text-align: center; font-weight: 900; color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { padding: 10px 8px; border-bottom: 1px solid #edf1ee; text-align: center; white-space: nowrap; }
th { color: var(--muted); font-size: .75rem; background: #f8faf8; }
th:nth-child(2), td:nth-child(2) { text-align: left; }
.rank { font-weight: 900; }
.qualified-row { background: #eff9f2; }

.small-note { color: var(--muted); font-size: .82rem; margin: 9px 0 18px; }
.qualifier-grid { margin: 18px 0; }
.qualifier-list { padding: 12px 15px; display: grid; gap: 8px; }
.qualifier-item { display: grid; grid-template-columns: 30px 1fr auto; gap: 9px; align-items: center; }
.qualifier-seed { font-weight: 900; color: var(--green); }
.qualifier-meta { color: var(--muted); font-size: .78rem; }

.bracket {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 8px 2px 24px;
  align-items: stretch;
}
.bracket-round { min-width: 285px; display: flex; flex-direction: column; }
.bracket-round h3 { margin: 0 0 10px; color: var(--green); }
.bracket-matches { display: flex; flex: 1; flex-direction: column; justify-content: space-around; gap: 12px; }
.ko-match {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 11px;
  box-shadow: var(--shadow);
}
.ko-team { display: grid; grid-template-columns: 1fr 46px; align-items: center; gap: 8px; padding: 4px 0; }
.ko-team + .ko-team { border-top: 1px solid #edf1ee; }
.ko-team input { text-align: center; padding: 7px 3px; }
.ko-team.winner { color: var(--green); font-weight: 900; }
.penalty-row { display: grid; grid-template-columns: 1fr 46px 10px 46px; gap: 7px; align-items: center; margin-top: 8px; color: var(--muted); font-size: .75rem; }
.penalty-row input { padding: 7px 3px; text-align: center; }
.champion {
  margin: 18px 0 0;
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #fff4bd, #f2c94c);
  text-align: center;
  color: #4a3a00;
  box-shadow: var(--shadow);
}
.champion strong { display: block; font-size: 1.5rem; margin-top: 4px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translate(-50%, 18px);
  background: #15231b;
  color: white;
  padding: 11px 16px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: .2s ease;
  z-index: 99;
  box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 760px) {
  .app-header { align-items: flex-start; flex-direction: column; padding: 18px; }
  .header-actions { width: 100%; }
  .header-actions .btn { flex: 1; text-align: center; }
  .config-grid, .knockout-config { grid-template-columns: 1fr; padding: 15px; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .compact-controls { width: 100%; }
  .matches-grid, .tables-grid, .qualifier-grid { grid-template-columns: 1fr; }
  .match-row { grid-template-columns: minmax(80px,1fr) 42px 10px 42px minmax(80px,1fr); font-size: .82rem; }
  .danger-zone { align-items: flex-start; flex-direction: column; }
  .danger-zone .btn { width: 100%; }
}