:root {
  --bg: #0b0e12;
  --card: #141922;
  --text: #e9eef5;
  --muted: #a8b2bd;
  --accent: #6ab0ff;
  --border: #273244;
  --ok: #2bb673;
  --warn: #ffb020;
  --error: #e5534b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background: var(--bg);
  color: var(--text);
}

.topbar {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  background: #0d121a;
}
.topbar h1 { margin: 0; font-weight: 700; font-size: 20px; }

.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.score-form .row { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
.score-form label { width: 160px; color: var(--muted); }
.score-form input, .score-form select {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0e131b;
  color: var(--text);
}
.actions { display: flex; justify-content: flex-start; gap: 12px; }
button {
  border: 1px solid var(--border);
  background: #152034;
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }

.hint { color: var(--muted); font-size: 13px; margin-top: 6px; }

.tabs { margin-top: 24px; }
.tab-headers { display: flex; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.tab-button { padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border); background: #0f1622; }
.tab-button.active { border-color: var(--accent); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-header { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }

.table {
  width: 100%;
  border-collapse: collapse;
}
.table th, .table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.table th { color: var(--muted); font-weight: 600; font-size: 13px; }
.table td { font-size: 14px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); }
.badge.ok { border-color: var(--ok); }
.badge.warn { border-color: var(--warn); }
.badge.err { border-color: var(--error); }

.flash-area { margin-bottom: 12px; }
.flash { padding: 10px 12px; border-radius: 8px; margin-bottom: 8px; border: 1px solid var(--border); }
.flash.success { border-color: var(--ok); }
.flash.error { border-color: var(--error); }

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 900px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

.footer {
  margin: 40px 0 20px;
  text-align: center;
  color: var(--muted);
}
.muted { color: var(--muted); }

/* Mobile responsiveness improvements */
@media (max-width: 768px) {
  .container {
    padding: 0 12px;
    margin: 16px auto;
  }
  
  .topbar {
    padding: 12px 16px;
  }
  
  .topbar h1 {
    font-size: 18px;
  }
  
  .card {
    padding: 12px;
    margin-bottom: 16px;
  }
  
  .score-form .row {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  
  .score-form label {
    width: auto;
    margin-bottom: 4px;
  }
  
  .table {
    font-size: 13px;
  }
  
  .table th, .table td {
    padding: 6px 8px;
  }
  
  .tab-headers {
    gap: 4px;
  }
  
  .tab-button {
    padding: 6px 10px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 8px;
    margin: 12px auto;
  }
  
  .topbar {
    padding: 10px 12px;
  }
  
  .topbar h1 {
    font-size: 16px;
  }
  
  .card {
    padding: 10px;
    margin-bottom: 12px;
  }
  
  .table {
    font-size: 12px;
  }
  
  .table th, .table td {
    padding: 4px 6px;
  }
  
  .tab-button {
    padding: 5px 8px;
    font-size: 12px;
  }
  
  button {
    padding: 8px 12px;
    font-size: 13px;
  }
}