.gc-box {
    background: #fff;
    border-radius: 20px;
    padding: 25px;
    max-width: 1100px;
    margin: 20px auto;
    box-shadow: 0 4px 12px rgba(0,0,0,.08);
    overflow-x: auto;
}

.gc-select-wrap {
    margin-bottom: 18px;
}

.gc-fase-select {
    padding: 10px 20px;
    border-radius: 25px;
    border: 1px solid #aaa;
    font-size: 16px;
    background: white;
}

.gc-box h2,
.gc-admin h2 {
    text-align: center;
    color: #081650;
    margin: 20px 0;
    font-weight: 700;
}

.gc-table {
    width: 100%;
    border-collapse: collapse;
    font-family: Arial, sans-serif;
}

.gc-table th {
    padding: 12px 8px;
    text-align: center;
    color: #081650;
    border-bottom: 1px solid #ddd;
}

.gc-table td {
    padding: 13px 8px;
    text-align: center;
    border-bottom: 1px solid #e5e5e5;
}

.gc-table tbody tr:nth-child(even) {
    background: #eef3f8;
}

.gc-table tbody tr:nth-child(odd) {
    background: #dfe7ef;
}

.gc-pos {
    background: #060b50 !important;
    color: #fff;
    font-size: 22px;
    font-weight: bold;
    width: 45px;
}

.gc-team {
    text-align: left !important;
    min-width: 180px;
    font-weight: 600;
}

.gc-bracket {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.gc-match {
    background: #eef3f8;
    border-radius: 16px;
    padding: 22px;
    min-width: 240px;
    text-align: center;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,.05);
}

.gc-match strong {
    display: block;
    color: #081650;
    margin-bottom: 10px;
    font-size: 18px;
}

.gc-match span {
    display: block;
    font-size: 17px;
}

.gc-final {
    background: #dfe8ff;
}

.gc-form-grid {
    display: grid;
    grid-template-columns: repeat(8, minmax(100px, 1fr));
    gap: 8px;
    align-items: center;
    margin-bottom: 20px;
}

.gc-matches {
    margin-top: 10px;
}

@media (max-width: 700px) {
    .gc-box { padding: 14px; }
    .gc-table th, .gc-table td { padding: 9px 6px; font-size: 13px; }
    .gc-pos { font-size: 18px; }
    .gc-team { min-width: 150px; }
    .gc-form-grid { grid-template-columns: 1fr; }
}